<!-- HTML header for doxygen 1.8.8-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<!-- For Mobile Devices -->
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta name="generator" content="Doxygen 1.8.17"/>
<script type="text/javascript" src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
<title>QuEST: QuEST_cpu_distributed.c Source File</title>
<!--<link href="tabs.css" rel="stylesheet" type="text/css"/>-->
<script type="text/javascript" src="dynsections.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="style.css" rel="stylesheet" type="text/css"/>
<link href='https://fonts.googleapis.com/css?family=Roboto+Slab' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="jquery.smartmenus.bootstrap.css" rel="stylesheet">
<script type="text/javascript" src="jquery.smartmenus.js"></script>
<!-- SmartMenus jQuery Bootstrap Addon -->
<script type="text/javascript" src="jquery.smartmenus.bootstrap.js"></script>
<!-- SmartMenus jQuery plugin -->
</head>
<body>
<nav class="navbar navbar-default" role="navigation">
<div class="container">
<div class="navbar-header">
<a class="navbar-brand"><img alt="Logo" src="logo.png"/></a>
<a class="navbar-brand"><b>QuEST</b> v3.4.0<br>The Quantum Exact Simulation Toolkit</a>
</div>
</div>
</nav>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div class="content" id="content">
<div class="container">
<div class="row">
<div class="col-sm-12 panel " style="padding-bottom: 15px;">
<div style="margin-bottom: 15px;">
<!-- end header part -->
<!-- Generated by Doxygen 1.8.17 -->
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('',false,false,'search.php','Search');
});
/* @license-end */</script>
<div id="main-nav"></div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="dir_e145b6391efe0b6e575fd5bb5f76dbf8.html">QuEST</a></li><li class="navelem"><a class="el" href="dir_aaf4e0c86438000dc030ca371e863336.html">QuEST</a></li><li class="navelem"><a class="el" href="dir_288db1ec25fc0ec29a6dc915511dd336.html">src</a></li><li class="navelem"><a class="el" href="dir_9ac8631f294bc067d7e4c007a43fb043.html">CPU</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">QuEST_cpu_distributed.c</div> </div>
</div><!--header-->
<div class="contents">
<a href="QuEST__cpu__distributed_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Distributed under MIT licence. See https://github.com/QuEST-Kit/QuEST/blob/master/LICENCE.txt for details </span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>  </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor"># include "<a class="code" href="QuEST_8h.html">QuEST.h</a>"</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"># include "<a class="code" href="QuEST__internal_8h.html">QuEST_internal.h</a>"</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"># include "<a class="code" href="QuEST__precision_8h.html">QuEST_precision.h</a>"</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor"># include "<a class="code" href="QuEST__validation_8h.html">QuEST_validation.h</a>"</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor"># include "<a class="code" href="mt19937ar_8h.html">mt19937ar.h</a>"</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor"># include "<a class="code" href="QuEST__cpu__internal_8h.html">QuEST_cpu_internal.h</a>"</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
<div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ad3d8a3bd0c0b677acef144f2c2ef6d73"> 20</a></span> <span class="preprocessor"># define _BSD_SOURCE</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"># include <unistd.h></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"># include <mpi.h></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"># include <stdlib.h></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"># include <stdio.h></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"># include <string.h></span> <span class="comment">// for memcpy</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"># include <math.h></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"># include <time.h></span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"># include <sys/types.h></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"># include <omp.h></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a7ebd3198a198f4cd20840f64fd8b84d0"> 35</a></span> <a class="code" href="structComplex.html">Complex</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a7ebd3198a198f4cd20840f64fd8b84d0">statevec_calcInnerProduct</a>(<a class="code" href="structQureg.html">Qureg</a> bra, <a class="code" href="structQureg.html">Qureg</a> ket) {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="code" href="structComplex.html">Complex</a> localInnerProd = <a class="code" href="QuEST__cpu_8c.html#a6fbb3b693f25dde1e9e3dc87dc1984f7">statevec_calcInnerProductLocal</a>(bra, ket);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">if</span> (bra.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a> == 1)</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">return</span> localInnerProd;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localReal = localInnerProd.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localImag = localInnerProd.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalReal, globalImag;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  MPI_Allreduce(&localReal, &globalReal, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  MPI_Allreduce(&localImag, &globalImag, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="structComplex.html">Complex</a> globalInnerProd;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  globalInnerProd.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a> = globalReal;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  globalInnerProd.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a> = globalImag;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> globalInnerProd;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> }</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a6153547f245c05874161a105e9a2f02c"> 53</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a6153547f245c05874161a105e9a2f02c">densmatr_calcTotalProb</a>(<a class="code" href="structQureg.html">Qureg</a> qureg) {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// computes the trace by summing every element ("diag") with global index (2^n + 1)i for i in [0, 2^n-1]</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// computes first local index containing a diagonal element</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> diagSpacing = 1LL + (1LL << qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numPrevDiags = (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>>0)? 1+(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>*qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>)/diagSpacing : 0;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> globalIndNextDiag = diagSpacing * numPrevDiags;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> localIndNextDiag = globalIndNextDiag % qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> rankTotal = 0;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> y, t, c;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  c = 0;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// iterates every local diagonal</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">for</span> (index=localIndNextDiag; index < qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>; index += diagSpacing) {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// Kahan summation - brackets are important</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  y = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[index] - c;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  t = rankTotal + y;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  c = ( t - rankTotal ) - y;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  rankTotal = t;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// combine each node's sum of diagonals</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalTotal;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a> > 1)</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  MPI_Allreduce(&rankTotal, &globalTotal, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  globalTotal = rankTotal;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> globalTotal;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
<div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ad65ad1b5ea6f30b0c6b4ffda96e1a8e6"> 88</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#ad65ad1b5ea6f30b0c6b4ffda96e1a8e6">statevec_calcTotalProb</a>(<a class="code" href="structQureg.html">Qureg</a> qureg){</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// Implemented using Kahan summation for greater accuracy at a slight floating</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="comment">// point operation overhead. For more details see https://en.wikipedia.org/wiki/Kahan_summation_algorithm</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> pTotal=0; </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> y, t, c;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> allRankTotals=0;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmpsPerRank = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  c = 0.0;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">for</span> (index=0; index<numAmpsPerRank; index++){ </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">// Perform pTotal+=qureg.stateVec.real[index]*qureg.stateVec.real[index]; by Kahan</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  y = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[index]*qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[index] - c;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  t = pTotal + y;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// Don't change the bracketing on the following line</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  c = ( t - pTotal ) - y;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  pTotal = t;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// Perform pTotal+=qureg.stateVec.imag[index]*qureg.stateVec.imag[index]; by Kahan</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  y = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[index]*qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[index] - c;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  t = pTotal + y;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// Don't change the bracketing on the following line</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  c = ( t - pTotal ) - y;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  pTotal = t;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  } </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>>1)</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  MPI_Allreduce(&pTotal, &allRankTotals, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">else</span> </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  allRankTotals=pTotal;</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> allRankTotals;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> measureQubit);</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit, <span class="keywordtype">int</span> numQubits);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <a class="code" href="structComplex.html">Complex</a> *rot1, <a class="code" href="structComplex.html">Complex</a> *rot2, <a class="code" href="structComplex.html">Complex</a> alpha, <a class="code" href="structComplex.html">Complex</a> beta);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit, <span class="keywordtype">int</span> numQubits);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(<span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit);</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="group__type.html#ga8ba2c3388dd64d9348c3b091852d36d4"> 129</a></span> <a class="code" href="structQuESTEnv.html">QuESTEnv</a> <a class="code" href="group__type.html#ga8ba2c3388dd64d9348c3b091852d36d4">createQuESTEnv</a>(<span class="keywordtype">void</span>) {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="structQuESTEnv.html">QuESTEnv</a> env;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="comment">// init MPI environment</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordtype">int</span> rank, numRanks, initialized;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  MPI_Initialized(&initialized);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">if</span> (!initialized){</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  MPI_Init(NULL, NULL);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  MPI_Comm_size(MPI_COMM_WORLD, &numRanks);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  MPI_Comm_rank(MPI_COMM_WORLD, &rank);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  env.<a class="code" href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">rank</a>=rank;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>=numRanks;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  printf(<span class="stringliteral">"ERROR: Trying to initialize QuESTEnv multiple times. Ignoring...\n"</span>);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// ensure env is initialised anyway, so the compiler is happy</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  MPI_Comm_size(MPI_COMM_WORLD, &numRanks);</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  MPI_Comm_rank(MPI_COMM_WORLD, &rank);</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  env.<a class="code" href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">rank</a>=rank;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>=numRanks;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  }</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <a class="code" href="QuEST__validation_8c.html#ad893327ebd2123508493d445868bfcd7">validateNumRanks</a>(env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>, __func__);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  env.<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a> = NULL;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  env.<a class="code" href="structQuESTEnv.html#a46e67e1a5ab930e04ff59f83f1d8630d">numSeeds</a> = 0;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <a class="code" href="group__debug.html#gae53fad7ebafccf236ad62b41e3244214">seedQuESTDefault</a>(&env);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> env;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  </div>
<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="group__debug.html#ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77"> 164</a></span> <span class="keywordtype">void</span> <a class="code" href="group__debug.html#ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77">syncQuESTEnv</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> env){</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  MPI_Barrier(MPI_COMM_WORLD);</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> }</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
<div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="group__debug.html#gac7e38d768a1bd79019f88cc1e6295092"> 168</a></span> <span class="keywordtype">int</span> <a class="code" href="group__debug.html#gac7e38d768a1bd79019f88cc1e6295092">syncQuESTSuccess</a>(<span class="keywordtype">int</span> successCode){</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordtype">int</span> totalSuccess;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  MPI_Allreduce(&successCode, &totalSuccess, 1, MPI_INT, MPI_LAND, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">return</span> totalSuccess;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> }</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  </div>
<div class="line"><a name="l00174"></a><span class="lineno"><a class="line" href="group__type.html#gaeff624226629d7063a8a776958a4f991"> 174</a></span> <span class="keywordtype">void</span> <a class="code" href="group__type.html#gaeff624226629d7063a8a776958a4f991">destroyQuESTEnv</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> env){</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  free(env.<a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a>);</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordtype">int</span> finalized;</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  MPI_Finalized(&finalized);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">if</span> (!finalized) MPI_Finalize();</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">else</span> printf(<span class="stringliteral">"ERROR: Trying to close QuESTEnv multiple times. Ignoring\n"</span>);</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  </div>
<div class="line"><a name="l00183"></a><span class="lineno"><a class="line" href="group__debug.html#gaf8a14ae79c3fb2c0b5f6255cc37bebf9"> 183</a></span> <span class="keywordtype">void</span> <a class="code" href="group__debug.html#gaf8a14ae79c3fb2c0b5f6255cc37bebf9">reportQuESTEnv</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> env){</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span> (env.<a class="code" href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">rank</a>==0){</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  printf(<span class="stringliteral">"EXECUTION ENVIRONMENT:\n"</span>); </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  printf(<span class="stringliteral">"Running distributed (MPI) version\n"</span>);</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  printf(<span class="stringliteral">"Number of ranks is %d\n"</span>, env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>);</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  printf(<span class="stringliteral">"OpenMP enabled\n"</span>);</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  printf(<span class="stringliteral">"Number of threads available is %d\n"</span>, omp_get_max_threads());</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor"># else</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  printf(<span class="stringliteral">"OpenMP disabled\n"</span>);</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  printf(<span class="stringliteral">"Precision: size of qreal is %ld bytes\n"</span>, <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>) );</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  </div>
<div class="line"><a name="l00198"></a><span class="lineno"><a class="line" href="group__debug.html#gadc5c01d8ea32e28c188db52be26116b6"> 198</a></span> <span class="keywordtype">void</span> <a class="code" href="group__debug.html#gadc5c01d8ea32e28c188db52be26116b6">getEnvironmentString</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> env, <span class="keywordtype">char</span> str[200]){</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordtype">int</span> ompStatus=0;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordtype">int</span> numThreads=1;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  ompStatus=1;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  numThreads=omp_get_max_threads(); </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  sprintf(str, <span class="stringliteral">"CUDA=0 OpenMP=%d MPI=1 threads=%d ranks=%d"</span>, ompStatus, numThreads, env.<a class="code" href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">numRanks</a>);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> }</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  </div>
<div class="line"><a name="l00208"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06"> 208</a></span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index){</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">return</span> index/qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>; <span class="comment">// this is numAmpsPerChunk</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> }</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div>
<div class="line"><a name="l00212"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#abc9a9ef4344c7faaaf28ac25c76649b9"> 212</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#abc9a9ef4344c7faaaf28ac25c76649b9">statevec_getRealAmp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index){</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordtype">int</span> chunkId = <a class="code" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a>(qureg, index);</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> el; </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>==chunkId){</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  el = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[index-chunkId*qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>];</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  }</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  MPI_Bcast(&el, 1, MPI_QuEST_REAL, chunkId, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">return</span> el; </div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> } </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  </div>
<div class="line"><a name="l00222"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#abd509244d57657e148e4084c5ab5d28f"> 222</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#abd509244d57657e148e4084c5ab5d28f">statevec_getImagAmp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> index){</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordtype">int</span> chunkId = <a class="code" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a>(qureg, index);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> el; </div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>==chunkId){</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  el = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[index-chunkId*qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>];</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  }</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  MPI_Bcast(&el, 1, MPI_QuEST_REAL, chunkId, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">return</span> el; </div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> }</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  </div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> { </div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeHalfBlock = 1LL << (targetQubit);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeBlock = sizeHalfBlock*2;</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> posInBlock = (chunkId*chunkSize) % sizeBlock;</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">return</span> posInBlock<sizeHalfBlock;</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> }</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  </div>
<div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f"> 250</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit, <span class="keywordtype">int</span> numQubits)</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> { </div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlock = 1LL << (targetQubit+numQubits);</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterBlock = sizeOuterHalfBlock*2;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> posInBlock = (chunkId*chunkSize) % sizeOuterBlock;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">return</span> posInBlock<sizeOuterHalfBlock;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> }</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  </div>
<div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872"> 272</a></span> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <a class="code" href="structComplex.html">Complex</a> *rot1, <a class="code" href="structComplex.html">Complex</a> *rot2, <a class="code" href="structComplex.html">Complex</a> alpha, <a class="code" href="structComplex.html">Complex</a> beta)</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> {</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  *rot1=alpha;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  rot2-><a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=-beta.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>;</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  rot2-><a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>=-beta.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>;</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  *rot1=beta;</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  *rot2=alpha;</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  }</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> }</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  </div>
<div class="line"><a name="l00297"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17"> 297</a></span> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <a class="code" href="structComplex.html">Complex</a> *rot1, <a class="code" href="structComplex.html">Complex</a> *rot2, <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> {</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  *rot1=(<a class="code" href="structComplex.html">Complex</a>) {.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=u.<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[0][0], .imag=u.<a class="code" href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">imag</a>[0][0]};</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  *rot2=(<a class="code" href="structComplex.html">Complex</a>) {.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=u.<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[0][1], .imag=u.<a class="code" href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">imag</a>[0][1]};</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  *rot1=(<a class="code" href="structComplex.html">Complex</a>) {.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=u.<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[1][0], .imag=u.<a class="code" href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">imag</a>[1][0]};</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  *rot2=(<a class="code" href="structComplex.html">Complex</a>) {.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>=u.<a class="code" href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">real</a>[1][1], .imag=u.<a class="code" href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">imag</a>[1][1]};</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  }</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> }</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  </div>
<div class="line"><a name="l00317"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4"> 317</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> {</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeHalfBlock = 1LL << (targetQubit);</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordtype">int</span> chunksPerHalfBlock = sizeHalfBlock/chunkSize;</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">return</span> chunkId + chunksPerHalfBlock;</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">return</span> chunkId - chunksPerHalfBlock;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> }</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  </div>
<div class="line"><a name="l00328"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08"> 328</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(<span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>, <span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit, <span class="keywordtype">int</span> numQubits)</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> {</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlock = 1LL << (targetQubit+numQubits);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="keywordtype">int</span> chunksPerOuterHalfBlock = sizeOuterHalfBlock/chunkSize;</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">return</span> chunkId + chunksPerOuterHalfBlock;</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordflow">return</span> chunkId - chunksPerOuterHalfBlock;</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  }</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> }</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  </div>
<div class="line"><a name="l00339"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce"> 339</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce">getChunkOuterBlockPairIdForPart3</a>(<span class="keywordtype">int</span> chunkIsUpperSmallerQubit, <span class="keywordtype">int</span> chunkIsUpperBiggerQubit, <span class="keywordtype">int</span> chunkId, </div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> smallerQubit, <span class="keywordtype">int</span> biggerQubit, <span class="keywordtype">int</span> numQubits)</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> {</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlockBiggerQubit = 1LL << (biggerQubit+numQubits);</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlockSmallerQubit = 1LL << (smallerQubit+numQubits);</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordtype">int</span> chunksPerOuterHalfBlockSmallerQubit = sizeOuterHalfBlockSmallerQubit/chunkSize;</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordtype">int</span> chunksPerOuterHalfBlockBiggerQubit = sizeOuterHalfBlockBiggerQubit/chunkSize;</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordtype">int</span> rank;</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordflow">if</span> (chunkIsUpperBiggerQubit){</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  rank = chunkId + chunksPerOuterHalfBlockBiggerQubit;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  rank = chunkId - chunksPerOuterHalfBlockBiggerQubit;</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  }</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  </div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordflow">if</span> (chunkIsUpperSmallerQubit){</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  rank = rank + chunksPerOuterHalfBlockSmallerQubit;</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  rank = rank - chunksPerOuterHalfBlockSmallerQubit;</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  }</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordflow">return</span> rank;</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> }</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  </div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(<span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> {</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeHalfBlock = 1LL << (targetQubit);</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">if</span> (chunkSize > sizeHalfBlock) <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> }</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  </div>
<div class="line"><a name="l00377"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015"> 377</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(<span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> numQubits, <span class="keywordtype">int</span> targetQubit) {</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterHalfBlock = 1LL << (targetQubit+numQubits);</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keywordflow">if</span> (chunkSize > sizeOuterHalfBlock) <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> }</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  </div>
<div class="line"><a name="l00385"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2"> 385</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a>(<a class="code" href="structQureg.html">Qureg</a> matr, <a class="code" href="structQureg.html">Qureg</a> vec) {</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="comment">// Remember that for every amplitude that `vec` stores on the node,</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="comment">// `matr` stores an entire column. Ergo there are always an integer</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">// number (in fact, a power of 2) number of `matr`s columns on each node.</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="comment">// Since the total size of `vec` (between all nodes) is one column</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="comment">// and each node stores (possibly) multiple columns (vec.numAmpsPerChunk as many), </span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="comment">// `vec` can be fit entirely inside a single node's matr.pairStateVec (with excess!)</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  </div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="comment">// copy this node's vec segment into this node's matr pairState (in the right spot)</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numLocalAmps = vec.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> myOffset = vec.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a> * numLocalAmps;</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  memcpy(&matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[myOffset], vec.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real, numLocalAmps * <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>));</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  memcpy(&matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[myOffset], vec.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag, numLocalAmps * <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>));</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  </div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="comment">// we now want to share this node's vec segment with other node, so that </span></div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="comment">// vec is cloned in every node's matr.pairStateVec </span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  </div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="comment">// work out how many messages needed to send vec chunks (2GB limit)</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxMsgSize = MPI_MAX_AMPS_IN_MSG;</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keywordflow">if</span> (numLocalAmps < maxMsgSize) </div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  maxMsgSize = numLocalAmps;</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact:</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordtype">int</span> numMsgs = numLocalAmps / maxMsgSize;</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  </div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="comment">// every node gets a turn at being the broadcaster</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> broadcaster=0; broadcaster < vec.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>; broadcaster++) {</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  </div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> otherOffset = broadcaster * numLocalAmps;</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="comment">// every node sends a slice of qureg's pairState to every other</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i< numMsgs; i++) {</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  </div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="comment">// by sending that slice in further slices (due to bandwidth limit)</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  MPI_Bcast(</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  &matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[otherOffset + i*maxMsgSize], </div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  maxMsgSize, MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  MPI_Bcast(</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  &matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[otherOffset + i*maxMsgSize], </div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  maxMsgSize, MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  }</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  }</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> }</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  </div>
<div class="line"><a name="l00429"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aa6c3f86010ad398f42b0577ea3bb5bcf"> 429</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#aa6c3f86010ad398f42b0577ea3bb5bcf">densmatr_calcFidelity</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structQureg.html">Qureg</a> pureState) {</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  </div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="comment">// set qureg's pairState is to be the full pureState (on every node)</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a>(qureg, pureState);</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  </div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="comment">// collect calcFidelityLocal by every machine</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localSum = <a class="code" href="QuEST__cpu_8c.html#a7772f97cb4d92a9825bf3b7c82c3230c">densmatr_calcFidelityLocal</a>(qureg, pureState);</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  </div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="comment">// sum each localSum</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  MPI_Allreduce(&localSum, &globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  </div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">return</span> globalSum;</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> }</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  </div>
<div class="line"><a name="l00444"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a8c9da88f734b0862f4cce7d819e6d3b5"> 444</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a8c9da88f734b0862f4cce7d819e6d3b5">densmatr_calcHilbertSchmidtDistance</a>(<a class="code" href="structQureg.html">Qureg</a> a, <a class="code" href="structQureg.html">Qureg</a> b) {</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  </div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localSum = <a class="code" href="QuEST__cpu_8c.html#a939897137596bb73ad7a028d0beaaa10">densmatr_calcHilbertSchmidtDistanceSquaredLocal</a>(a, b);</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  </div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  MPI_Allreduce(&localSum, &globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  </div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> dist = sqrt(globalSum);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="keywordflow">return</span> dist;</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span> }</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  </div>
<div class="line"><a name="l00455"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a6ff3dc624b5fafe8edae4fe327c255a0"> 455</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a6ff3dc624b5fafe8edae4fe327c255a0">densmatr_calcInnerProduct</a>(<a class="code" href="structQureg.html">Qureg</a> a, <a class="code" href="structQureg.html">Qureg</a> b) {</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  </div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localSum = <a class="code" href="QuEST__cpu_8c.html#a08392b1b27d10e3b8a8648a5afeaa629">densmatr_calcInnerProductLocal</a>(a, b);</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  </div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  MPI_Allreduce(&localSum, &globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  </div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> dist = globalSum;</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">return</span> dist;</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> }</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  </div>
<div class="line"><a name="l00466"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae5ad68d054875913d0f7ec654840a9ec"> 466</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ae5ad68d054875913d0f7ec654840a9ec">densmatr_initPureState</a>(<a class="code" href="structQureg.html">Qureg</a> targetQureg, <a class="code" href="structQureg.html">Qureg</a> copyQureg) {</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  </div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keywordflow">if</span> (targetQureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>==1){</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="comment">// local version</span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="comment">// save pointers to qureg's pair state</span></div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* quregPairRePtr = targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real;</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* quregPairImPtr = targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag;</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  </div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="comment">// populate qureg pair state with pure state (by repointing)</span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real = copyQureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real;</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag = copyQureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag;</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  </div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="comment">// populate density matrix via it's pairState</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <a class="code" href="QuEST__cpu_8c.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a>(targetQureg, copyQureg);</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  </div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="comment">// restore pointers</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real = quregPairRePtr;</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag = quregPairImPtr;</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="comment">// set qureg's pairState is to be the full pure state (on every node)</span></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a>(targetQureg, copyQureg);</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  </div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="comment">// update every density matrix chunk using pairState</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <a class="code" href="QuEST__cpu_8c.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a>(targetQureg, copyQureg);</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  }</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> }</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  </div>
<div class="line"><a name="l00493"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3"> 493</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> pairRank){</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="comment">// MPI send/receive vars</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keywordtype">int</span> TAG=100;</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  MPI_Status status;</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  </div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="comment">// Multiple messages are required as MPI uses int rather than long long int for count</span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="comment">// For openmpi, messages are further restricted to 2GB in size -- do this for all cases</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="comment">// to be safe</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxMessageCount = MPI_MAX_AMPS_IN_MSG;</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a> < maxMessageCount) </div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  maxMessageCount = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  </div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keywordtype">int</span> numMessages = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>/maxMessageCount;</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> offset;</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="comment">// send my state vector to pairRank's qureg.pairStateVec</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="comment">// receive pairRank's state vector into qureg.pairStateVec</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keywordflow">for</span> (i=0; i<numMessages; i++){</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  offset = i*maxMessageCount;</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  MPI_Sendrecv(&qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[offset], maxMessageCount, MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  pairRank, TAG, MPI_COMM_WORLD, &status);</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="comment">//printf("rank: %d err: %d\n", qureg.rank, err);</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  MPI_Sendrecv(&qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[offset], maxMessageCount, MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  pairRank, TAG, MPI_COMM_WORLD, &status);</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  }</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span> }</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  </div>
<div class="line"><a name="l00523"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e"> 523</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> pairRank){</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="comment">// MPI send/receive vars</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keywordtype">int</span> TAG=100;</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  MPI_Status status;</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numAmpsToSend = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a> >> 1;</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  </div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="comment">// Multiple messages are required as MPI uses int rather than long long int for count</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="comment">// For openmpi, messages are further restricted to 2GB in size -- do this for all cases</span></div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="comment">// to be safe</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxMessageCount = MPI_MAX_AMPS_IN_MSG;</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="keywordflow">if</span> (numAmpsToSend < maxMessageCount) </div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  maxMessageCount = numAmpsToSend;</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  </div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keywordtype">int</span> numMessages = numAmpsToSend/maxMessageCount;</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> offset;</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="comment">// send the bottom half of my state vector to the top half of pairRank's qureg.pairStateVec</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="comment">// receive pairRank's state vector into the top of qureg.pairStateVec</span></div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="keywordflow">for</span> (i=0; i<numMessages; i++){</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  offset = i*maxMessageCount;</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  MPI_Sendrecv(&qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset+numAmpsToSend], maxMessageCount, </div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  pairRank, TAG, MPI_COMM_WORLD, &status);</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="comment">//printf("rank: %d err: %d\n", qureg.rank, err);</span></div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  MPI_Sendrecv(&qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset+numAmpsToSend], maxMessageCount, </div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  pairRank, TAG, MPI_COMM_WORLD, &status);</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  }</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span> }</div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  </div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span> <span class="comment">// @todo decide where this function should go. It is a preparation for MPI data transfer function</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589"> 557</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">compressPairVectorForSingleQubitDepolarise</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit){</div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeInnerBlock, sizeInnerHalfBlock;</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterColumn, sizeOuterHalfColumn;</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> thisInnerBlock, <span class="comment">// current block</span></div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  thisOuterColumn, <span class="comment">// current column in density matrix</span></div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  thisIndex, <span class="comment">// current index in (density matrix representation) state vector</span></div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  thisIndexInOuterColumn,</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  thisIndexInInnerBlock;</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  </div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <span class="keywordtype">int</span> outerBit;</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  </div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> thisTask;</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numTasks=qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>>>1;</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  </div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="comment">// set dimensions</span></div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  sizeInnerHalfBlock = 1LL << targetQubit;</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  sizeInnerBlock = 2LL * sizeInnerHalfBlock;</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  sizeOuterHalfColumn = 1LL << qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>;</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  sizeOuterColumn = 2LL * sizeOuterHalfColumn;</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  </div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span> <span class="preprocessor"> default (none) \</span></div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> <span class="preprocessor"> shared (sizeInnerBlock,sizeInnerHalfBlock,sizeOuterColumn,sizeOuterHalfColumn, \</span></div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span> <span class="preprocessor"> qureg,numTasks,targetQubit) \</span></div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span> <span class="preprocessor"> private (thisTask,thisInnerBlock,thisOuterColumn,thisIndex,thisIndexInOuterColumn, \</span></div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span> <span class="preprocessor"> thisIndexInInnerBlock,outerBit) </span></div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  {</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="comment">// thisTask iterates over half the elements in this process' chunk of the density matrix</span></div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="comment">// treat this as iterating over all columns, then iterating over half the values</span></div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="comment">// within one column.</span></div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="comment">// If this function has been called, this process' chunk contains half an </span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="comment">// outer block or less</span></div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  <span class="keywordflow">for</span> (thisTask=0; thisTask<numTasks; thisTask++) {</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  <span class="comment">// we want to process all columns in the density matrix,</span></div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="comment">// updating the values for half of each column (one half of each inner block)</span></div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  thisOuterColumn = thisTask / sizeOuterHalfColumn;</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  thisIndexInOuterColumn = thisTask&(sizeOuterHalfColumn-1); <span class="comment">// thisTask % sizeOuterHalfColumn</span></div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  thisInnerBlock = thisIndexInOuterColumn/sizeInnerHalfBlock;</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <span class="comment">// get index in state vector corresponding to upper inner block</span></div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  thisIndexInInnerBlock = thisTask&(sizeInnerHalfBlock-1); <span class="comment">// thisTask % sizeInnerHalfBlock</span></div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  thisIndex = thisOuterColumn*sizeOuterColumn + thisInnerBlock*sizeInnerBlock</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  + thisIndexInInnerBlock;</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="comment">// check if we are in the upper or lower half of an outer block</span></div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  outerBit = <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(targetQubit, (thisIndex+qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>*qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>)>>qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="comment">// if we are in the lower half of an outer block, shift to be in the lower half</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="comment">// of the inner block as well (we want to dephase |0><0| and |1><1| only)</span></div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  thisIndex += outerBit*(sizeInnerHalfBlock);</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  </div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="comment">// NOTE: at this point thisIndex should be the index of the element we want to </span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="comment">// dephase in the chunk of the state vector on this process, in the </span></div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="comment">// density matrix representation. </span></div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="comment">// thisTask is the index of the pair element in pairStateVec</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="comment">// we will populate the second half of pairStateVec with this process'</span></div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="comment">// data to send</span></div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  </div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[thisTask+numTasks] = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[thisIndex];</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[thisTask+numTasks] = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[thisIndex];</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  </div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  }</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  }</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span> }</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  </div>
<div class="line"><a name="l00624"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb"> 624</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit,</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="keywordtype">int</span> qubit2) {</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  </div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeInnerBlockQ1, sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeInnerBlockQ2, sizeInnerHalfBlockQ2, sizeInnerQuarterBlockQ2;</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterColumn, sizeOuterQuarterColumn;</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> </div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  thisInnerBlockQ2,</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  thisOuterColumn, <span class="comment">// current column in density matrix</span></div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  thisIndex, <span class="comment">// current index in (density matrix representation) state vector</span></div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  thisIndexInOuterColumn,</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  thisIndexInInnerBlockQ1,</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  thisIndexInInnerBlockQ2,</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  thisInnerBlockQ1InInnerBlockQ2;</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <span class="keywordtype">int</span> outerBitQ1, outerBitQ2;</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  </div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> thisTask;</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> numTasks=qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>>>2;</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  </div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  <span class="comment">// set dimensions</span></div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  sizeInnerHalfBlockQ1 = 1LL << targetQubit;</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  sizeInnerHalfBlockQ2 = 1LL << qubit2;</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  sizeInnerQuarterBlockQ2 = sizeInnerHalfBlockQ2 >> 1;</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  sizeInnerBlockQ2 = sizeInnerHalfBlockQ2 << 1;</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  sizeInnerBlockQ1 = 2LL * sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  sizeOuterColumn = 1LL << qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>;</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  sizeOuterQuarterColumn = sizeOuterColumn >> 2;</div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  </div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span> <span class="preprocessor"> default (none) \</span></div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span> <span class="preprocessor"> shared (sizeInnerBlockQ1,sizeInnerHalfBlockQ1,sizeInnerQuarterBlockQ2,sizeInnerHalfBlockQ2,sizeInnerBlockQ2, \</span></div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span> <span class="preprocessor"> sizeOuterColumn,sizeOuterQuarterColumn,qureg,numTasks,targetQubit,qubit2) \</span></div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span> <span class="preprocessor"> private (thisTask,thisInnerBlockQ2,thisOuterColumn,thisIndex,thisIndexInOuterColumn, \</span></div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span> <span class="preprocessor"> thisIndexInInnerBlockQ1,thisIndexInInnerBlockQ2,thisInnerBlockQ1InInnerBlockQ2,outerBitQ1,outerBitQ2) </span></div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  {</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="comment">// thisTask iterates over half the elements in this process' chunk of the density matrix</span></div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  <span class="comment">// treat this as iterating over all columns, then iterating over half the values</span></div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <span class="comment">// within one column.</span></div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="comment">// If this function has been called, this process' chunk contains half an </span></div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  <span class="comment">// outer block or less</span></div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  <span class="keywordflow">for</span> (thisTask=0; thisTask<numTasks; thisTask++) {</div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="comment">// we want to process all columns in the density matrix,</span></div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  <span class="comment">// updating the values for half of each column (one half of each inner block)</span></div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  thisOuterColumn = thisTask / sizeOuterQuarterColumn;</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  <span class="comment">// thisTask % sizeOuterQuarterColumn</span></div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  thisIndexInOuterColumn = thisTask&(sizeOuterQuarterColumn-1);</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  thisInnerBlockQ2 = thisIndexInOuterColumn / sizeInnerQuarterBlockQ2;</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  <span class="comment">// thisTask % sizeInnerQuarterBlockQ2;</span></div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  thisIndexInInnerBlockQ2 = thisTask&(sizeInnerQuarterBlockQ2-1);</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  thisInnerBlockQ1InInnerBlockQ2 = thisIndexInInnerBlockQ2 / sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="comment">// thisTask % sizeInnerHalfBlockQ1;</span></div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  thisIndexInInnerBlockQ1 = thisTask&(sizeInnerHalfBlockQ1-1);</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  </div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  <span class="comment">// get index in state vector corresponding to upper inner block</span></div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  thisIndex = thisOuterColumn*sizeOuterColumn + thisInnerBlockQ2*sizeInnerBlockQ2</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  + thisInnerBlockQ1InInnerBlockQ2*sizeInnerBlockQ1 + thisIndexInInnerBlockQ1;</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  </div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  <span class="comment">// check if we are in the upper or lower half of an outer block for Q1</span></div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  outerBitQ1 = <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(targetQubit, (thisIndex+qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>*qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>)>>qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="comment">// if we are in the lower half of an outer block, shift to be in the lower half</span></div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <span class="comment">// of the inner block as well (we want to dephase |0><0| and |1><1| only)</span></div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  thisIndex += outerBitQ1*(sizeInnerHalfBlockQ1);</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  </div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <span class="comment">// check if we are in the upper or lower half of an outer block for Q2</span></div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  outerBitQ2 = <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(qubit2, (thisIndex+qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>*qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>)>>qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="comment">// if we are in the lower half of an outer block, shift to be in the lower half</span></div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="comment">// of the inner block as well (we want to dephase |0><0| and |1><1| only)</span></div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  thisIndex += outerBitQ2*(sizeInnerQuarterBlockQ2<<1);</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  </div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  <span class="comment">// NOTE: at this point thisIndex should be the index of the element we want to </span></div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <span class="comment">// dephase in the chunk of the state vector on this process, in the </span></div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="comment">// density matrix representation. </span></div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="comment">// thisTask is the index of the pair element in pairStateVec</span></div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  </div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="comment">// state[thisIndex] = (1-depolLevel)*state[thisIndex] + depolLevel*(state[thisIndex]</span></div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  <span class="comment">// + pair[thisTask])/2</span></div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[thisTask+numTasks*2] = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.real[thisIndex];</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[thisTask+numTasks*2] = qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>.imag[thisIndex];</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  }</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  }</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span> }</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  </div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  </div>
<div class="line"><a name="l00712"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a398b60c4cb4fa2cf2ffc126de6c08da0"> 712</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a398b60c4cb4fa2cf2ffc126de6c08da0">densmatr_mixDepolarising</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> depolLevel) {</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="keywordflow">if</span> (depolLevel == 0)</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  </div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank is in the upper half of an outer block</span></div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  </div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, targetQubit);</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  </div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <a class="code" href="QuEST__cpu_8c.html#ab750fb47da2fca9849c678c869e40e69">densmatr_mixDepolarisingLocal</a>(qureg, targetQubit, depolLevel);</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  <span class="comment">// pack data to send to my pair process into the first half of pairStateVec</span></div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">compressPairVectorForSingleQubitDepolarise</a>(qureg, targetQubit);</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  </div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit, </div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  targetQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  </div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  <a class="code" href="QuEST__cpu_8c.html#a88670d0e7cebe33f61c1dd98daa338b3">densmatr_mixDepolarisingDistributed</a>(qureg, targetQubit, depolLevel);</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  }</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  </div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span> }</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  </div>
<div class="line"><a name="l00739"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ac501fe7b9d331be48359ce1546348f97"> 739</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ac501fe7b9d331be48359ce1546348f97">densmatr_mixDamping</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> damping) {</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="keywordflow">if</span> (damping == 0)</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  </div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank is in the upper half of an outer block</span></div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  </div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, targetQubit);</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  </div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <a class="code" href="QuEST__cpu_8c.html#ab124a3a9956046bf9c0e1e3ae9171f42">densmatr_mixDampingLocal</a>(qureg, targetQubit, damping);</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <span class="comment">// pack data to send to my pair process into the first half of pairStateVec</span></div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">compressPairVectorForSingleQubitDepolarise</a>(qureg, targetQubit);</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  </div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit, </div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  targetQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  </div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <a class="code" href="QuEST__cpu_8c.html#a8d9c19a3424f0ad89bfbfd920d65301d">densmatr_mixDampingDistributed</a>(qureg, targetQubit, damping);</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  }</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  </div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span> }</div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  </div>
<div class="line"><a name="l00766"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a43afa97e300b87bce7f3eb1213eb05f6"> 766</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a43afa97e300b87bce7f3eb1213eb05f6">densmatr_mixTwoQubitDepolarising</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> qubit1, <span class="keywordtype">int</span> qubit2, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> depolLevel){</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="keywordflow">if</span> (depolLevel == 0)</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="keywordtype">int</span> rankIsUpperBiggerQubit, rankIsUpperSmallerQubit;</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="keywordtype">int</span> biggerQubit, smallerQubit;</div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  </div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <a class="code" href="QuEST__internal_8h.html#a623e577b7230f3c8dc202be6185b4289">densmatr_mixTwoQubitDephasing</a>(qureg, qubit1, qubit2, depolLevel);</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  </div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> eta = 2/depolLevel;</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> delta = eta - 1 - sqrt( (eta-1)*(eta-1) - 1 ); </div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> gamma = 1+delta;</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  gamma = 1/(gamma*gamma*gamma);</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> GAMMA_PARTS_1_OR_2 = 1.0;</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  <span class="comment">// TODO -- test delta too small</span></div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <span class="comment">/* </span></div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span> <span class="comment"> if (fabs(4*delta*(1+delta)*gamma-depolLevel)>1e-5){</span></div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span> <span class="comment"> printf("Numerical error in delta; for small error rates try Taylor expansion.\n");</span></div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span> <span class="comment"> exit(1);</span></div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  </div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  biggerQubit = qubit1 > qubit2 ? qubit1 : qubit2;</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  smallerQubit = qubit1 < qubit2 ? qubit1 : qubit2;</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <span class="keywordtype">int</span> useLocalDataOnlyBigQubit, useLocalDataOnlySmallQubit;</div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  </div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  useLocalDataOnlyBigQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, biggerQubit);</div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="keywordflow">if</span> (useLocalDataOnlyBigQubit){</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  <span class="comment">// does parts 1, 2 and 3 locally in one go</span></div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <a class="code" href="QuEST__cpu_8c.html#a3510f01d4d15dcc545564eb84c668cad">densmatr_mixTwoQubitDepolarisingLocal</a>(qureg, qubit1, qubit2, delta, gamma);</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  useLocalDataOnlySmallQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, smallerQubit);</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <span class="keywordflow">if</span> (useLocalDataOnlySmallQubit){</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <span class="comment">// do part 1 locally</span></div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  <a class="code" href="QuEST__cpu_8c.html#ae90f82418e0aa67218d733dbbc681998">densmatr_mixTwoQubitDepolarisingLocalPart1</a>(qureg, smallerQubit, biggerQubit, delta);</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  </div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <span class="comment">// do parts 2 and 3 distributed (if part 2 is distributed part 3 is also distributed)</span></div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <span class="comment">// part 2 will be distributed and the value of the small qubit won't matter</span></div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  rankIsUpperBiggerQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, biggerQubit, </div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpperBiggerQubit, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  </div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  <a class="code" href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  </div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <span class="comment">// part 3 will be distributed but involve rearranging for the smaller qubit</span></div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  rankIsUpperBiggerQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, biggerQubit, </div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpperBiggerQubit, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  </div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <a class="code" href="QuEST__cpu_8c.html#acabdfbd3184d3ab3bded61e24142b800">densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3</a>(qureg, smallerQubit, biggerQubit, delta, gamma);</div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <span class="comment">// do part 1, 2 and 3 distributed</span></div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <span class="comment">// part 1</span></div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  rankIsUpperSmallerQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, smallerQubit, </div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpperSmallerQubit, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  smallerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  </div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <a class="code" href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  </div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  <span class="comment">// part 2</span></div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  rankIsUpperBiggerQubit = <a class="code" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, biggerQubit, </div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a>(rankIsUpperBiggerQubit, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, </div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  </div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  <a class="code" href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  </div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  <span class="comment">// part 3</span></div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce">getChunkOuterBlockPairIdForPart3</a>(rankIsUpperSmallerQubit, rankIsUpperBiggerQubit, </div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, smallerQubit, biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <a class="code" href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, gamma);</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  </div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  }</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  }</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  </div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span> }</div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  </div>
<div class="line"><a name="l00858"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aec63559e8b9ab0e17efe18d64d2ceca6"> 858</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aec63559e8b9ab0e17efe18d64d2ceca6">statevec_compactUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplex.html">Complex</a> alpha, <a class="code" href="structComplex.html">Complex</a> beta)</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span> {</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  </div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  </div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  <a class="code" href="QuEST__cpu_8c.html#a5ddfdb22e4704b680d67d08d9e80835b">statevec_compactUnitaryLocal</a>(qureg, targetQubit, alpha, beta);</div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(rankIsUpper, &rot1, &rot2, alpha, beta);</div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  </div>
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block. </span></div>
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  <span class="comment">// send values to compactUnitaryDistributed in the correct order</span></div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <a class="code" href="QuEST__cpu_8c.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  <a class="code" href="QuEST__cpu_8c.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  }</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  }</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span> }</div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  </div>
<div class="line"><a name="l00895"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ac3735bd959600e57b2ee3a105666cddf"> 895</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ac3735bd959600e57b2ee3a105666cddf">statevec_unitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span> {</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  </div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  </div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  <a class="code" href="QuEST__cpu_8c.html#aafc398f8f479fcc066a2dea700235635">statevec_unitaryLocal</a>(qureg, targetQubit, u);</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &rot1, &rot2, u);</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  </div>
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block. </span></div>
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  <span class="comment">// send values to compactUnitaryDistributed in the correct order</span></div>
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  <a class="code" href="QuEST__cpu_8c.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  <a class="code" href="QuEST__cpu_8c.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  }</div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  }</div>
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  </div>
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  </div>
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span> }</div>
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  </div>
<div class="line"><a name="l00934"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a1275d604674224d87a173fb5bac78835"> 934</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a1275d604674224d87a173fb5bac78835">statevec_controlledCompactUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplex.html">Complex</a> alpha, <a class="code" href="structComplex.html">Complex</a> beta)</div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span> {</div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  </div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  </div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  <a class="code" href="QuEST__cpu_8c.html#a215e2d6f88dbecc0b408b3573b5e144f">statevec_controlledCompactUnitaryLocal</a>(qureg, controlQubit, targetQubit, alpha, beta);</div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(rankIsUpper, &rot1, &rot2, alpha, beta);</div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  <span class="comment">//printf("%d rank has pair rank: %d\n", qureg.rank, pairRank);</span></div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  </div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block. send values to controlledCompactUnitaryDistributed</span></div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  <a class="code" href="QuEST__cpu_8c.html#a071baf8b6951d2a7d6529394b6f39364">statevec_controlledCompactUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  <a class="code" href="QuEST__cpu_8c.html#a071baf8b6951d2a7d6529394b6f39364">statevec_controlledCompactUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  }</div>
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  }</div>
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span> }</div>
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  </div>
<div class="line"><a name="l00972"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#add9ca9956cdd81ed5d0b0f66168c04a3"> 972</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#add9ca9956cdd81ed5d0b0f66168c04a3">statevec_controlledUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit, </div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span> {</div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  </div>
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  </div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <a class="code" href="QuEST__cpu_8c.html#a903beb4f5d8753a964ce2dc5f9096a24">statevec_controlledUnitaryLocal</a>(qureg, controlQubit, targetQubit, u);</div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &rot1, &rot2, u);</div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <span class="comment">//printf("%d rank has pair rank: %d\n", qureg.rank, pairRank);</span></div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  </div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block. send values to controlledUnitaryDistributed</span></div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  <a class="code" href="QuEST__cpu_8c.html#a57368529b2a7e76fec423cbfe9980b22">statevec_controlledUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <a class="code" href="QuEST__cpu_8c.html#a57368529b2a7e76fec423cbfe9980b22">statevec_controlledUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  }</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  }</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span> }</div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  </div>
<div class="line"><a name="l01011"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a600bda10463e2078ce746ec28f2d39c9"> 1011</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a600bda10463e2078ce746ec28f2d39c9">statevec_multiControlledUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> ctrlQubitsMask, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> ctrlFlipMask, <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span> {</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  </div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  </div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  <a class="code" href="QuEST__cpu_8c.html#ab19f28e68330da68ea3caa2bdef32da9">statevec_multiControlledUnitaryLocal</a>(qureg, targetQubit, ctrlQubitsMask, ctrlFlipMask, u);</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &rot1, &rot2, u);</div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  </div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  </div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block. send values to multiControlledUnitaryDistributed</span></div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  <a class="code" href="QuEST__cpu_8c.html#ab58fe4be895283c2c4eb86ec9af5682e">statevec_multiControlledUnitaryDistributed</a>(qureg,targetQubit,ctrlQubitsMask,ctrlFlipMask,rot1,rot2,</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  <a class="code" href="QuEST__cpu_8c.html#ab58fe4be895283c2c4eb86ec9af5682e">statevec_multiControlledUnitaryDistributed</a>(qureg,targetQubit,ctrlQubitsMask,ctrlFlipMask,rot1,rot2,</div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  }</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  }</div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span> }</div>
<div class="line"><a name="l01048"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a1c82b5e914a8a39c5c7b782dbc16fa76"> 1048</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a1c82b5e914a8a39c5c7b782dbc16fa76">statevec_pauliX</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span> {</div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  </div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  </div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  <a class="code" href="QuEST__cpu_8c.html#aa987d1e0ba97da2ca540194356dd62de">statevec_pauliXLocal</a>(qureg, targetQubit);</div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  <span class="comment">//printf("%d rank has pair rank: %d\n", qureg.rank, pairRank);</span></div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block. pauliX just replaces</span></div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  <span class="comment">// this rank's values with pair values</span></div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  <a class="code" href="QuEST__cpu_8c.html#a464efbd1d7ca5a7b25c83ada001955c2">statevec_pauliXDistributed</a>(qureg,</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">// out</span></div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  }</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span> }</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  </div>
<div class="line"><a name="l01075"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#abb2eab4af99adcc59be24f4c91c6f6ad"> 1075</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#abb2eab4af99adcc59be24f4c91c6f6ad">statevec_controlledNot</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span> {</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  </div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  <a class="code" href="QuEST__cpu_8c.html#ace1482ef82b83e7f926634a67b322fc4">statevec_controlledNotLocal</a>(qureg, controlQubit, targetQubit);</div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  <a class="code" href="QuEST__cpu_8c.html#a393da4c4bc582a757ca8406d8501aca0">statevec_controlledNotDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//out</span></div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  }</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span> }</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  </div>
<div class="line"><a name="l01097"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a13ecc24b355a5213d745651cde56bd71"> 1097</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a13ecc24b355a5213d745651cde56bd71">statevec_multiControlledMultiQubitNot</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> ctrlMask, <span class="keywordtype">int</span> targMask)</div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span> { </div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  <span class="comment">/* operation is the same regardless of control and target ordering, hence </span></div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span> <span class="comment"> * we accept only bitMasks (for convenience of caller, when shifting qubits</span></div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span> <span class="comment"> * for density matrices)</span></div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  </div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  <span class="comment">// global index of the first basis state in this node</span></div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> firstInd = qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a> * qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  </div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  <span class="comment">/* optimisation: if this node doesn't contain any amplitudes for which {ctrls}={1}</span></div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span> <span class="comment"> * (and hence, neither does the pair node), then these pair nodes have nothing to modify </span></div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span> <span class="comment"> * nor any need to communicate, and can halt. No ctrls are contained in the node </span></div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span> <span class="comment"> * if the distance from the first index, to the next index where {ctrls}=1, is </span></div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span> <span class="comment"> * greater than the total contained amplitudes. This is a worthwhile optimisation, </span></div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span> <span class="comment"> * since although we must still wait for the slowest node, we have potentially reduced </span></div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span> <span class="comment"> * the network traffic and might avoid saturation. </span></div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  <span class="keywordflow">if</span> ((firstInd|ctrlMask) - firstInd >= qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>)</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  </div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  <span class="comment">/* nodes communicate pairwise, and (ignoring ctrls) swap all their amplitudes with mate.</span></div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span> <span class="comment"> * hence we find |pairState> = X_{targs}|firstStateInNode>, determine which node contains </span></div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span> <span class="comment"> * |pairState>, and swap state-vector with it (unless it happens to be this node).</span></div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  </div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  <span class="comment">// global index of the corresponding NOT'd first basis state</span></div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> pairInd = firstInd ^ targMask;</div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>  <span class="keywordtype">int</span> pairRank = pairInd / qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  <span class="keywordtype">int</span> useLocalDataOnly = (pairRank == qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>);</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  </div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  <span class="keywordflow">if</span> (useLocalDataOnly) {</div>
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  <span class="comment">// swaps amplitudes locally, setting |a>=X|b>, and |b>=X|a></span></div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  <a class="code" href="QuEST__cpu_8c.html#ac7d30ce54573c75b35386cd0e284adc5">statevec_multiControlledMultiQubitNotLocal</a>(qureg, ctrlMask, targMask);</div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  <span class="comment">// swaps amplitudes with pair node</span></div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  <span class="comment">// modifies only |a>=X|b> (pair node handles the converse)</span></div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <a class="code" href="QuEST__cpu_8c.html#ae6f0c9ed9261afbab4712e056a88763d">statevec_multiControlledMultiQubitNotDistributed</a>(</div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  qureg, ctrlMask, targMask,</div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">// out</span></div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  }</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span> }</div>
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  </div>
<div class="line"><a name="l01142"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#af1cca787f3b0e0c91ffb2495f9ad8d5a"> 1142</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#af1cca787f3b0e0c91ffb2495f9ad8d5a">statevec_pauliY</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span> { </div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  <span class="keywordtype">int</span> conjFac = 1;</div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  </div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  </div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  <a class="code" href="QuEST__cpu_8c.html#a45b0916c3e121837f214b64f7424e479">statevec_pauliYLocal</a>(qureg, targetQubit, conjFac);</div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  <a class="code" href="QuEST__cpu_8c.html#a0f562af6cb665a8a7a3f80e9449734d5">statevec_pauliYDistributed</a>(qureg,</div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">// out</span></div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  rankIsUpper, conjFac);</div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  }</div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span> }</div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  </div>
<div class="line"><a name="l01167"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a81fbd2eccd0d0e5a3cece4df2f96cb92"> 1167</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a81fbd2eccd0d0e5a3cece4df2f96cb92">statevec_pauliYConj</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span> { </div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  <span class="keywordtype">int</span> conjFac = -1;</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  </div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  </div>
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  <a class="code" href="QuEST__cpu_8c.html#a45b0916c3e121837f214b64f7424e479">statevec_pauliYLocal</a>(qureg, targetQubit, conjFac);</div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  <a class="code" href="QuEST__cpu_8c.html#a0f562af6cb665a8a7a3f80e9449734d5">statevec_pauliYDistributed</a>(qureg,</div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">// out</span></div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  rankIsUpper, conjFac);</div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  }</div>
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span> }</div>
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  </div>
<div class="line"><a name="l01192"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a4e19ef93d01d7acea32ca646d623aedd"> 1192</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4e19ef93d01d7acea32ca646d623aedd">statevec_controlledPauliY</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span> {</div>
<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  <span class="keywordtype">int</span> conjFac = 1;</div>
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  </div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  </div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  <a class="code" href="QuEST__cpu_8c.html#a06fb16aa4af7c54d36052a14d3ad58a7">statevec_controlledPauliYLocal</a>(qureg, controlQubit, targetQubit, conjFac);</div>
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  <a class="code" href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  <a class="code" href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  - conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  }</div>
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>  }</div>
<div class="line"><a name="l01223"></a><span class="lineno"> 1223</span> }</div>
<div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>  </div>
<div class="line"><a name="l01225"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a4a2fa262d3f0dba372797b9bd35d9fa5"> 1225</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4a2fa262d3f0dba372797b9bd35d9fa5">statevec_controlledPauliYConj</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> controlQubit, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span> {</div>
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <span class="keywordtype">int</span> conjFac = -1;</div>
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>  </div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  <span class="keywordtype">int</span> rankIsUpper; <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  </div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  <a class="code" href="QuEST__cpu_8c.html#a06fb16aa4af7c54d36052a14d3ad58a7">statevec_controlledPauliYLocal</a>(qureg, controlQubit, targetQubit, conjFac);</div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  <a class="code" href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  <a class="code" href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  - conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  }</div>
<div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  }</div>
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</span> }</div>
<div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>  </div>
<div class="line"><a name="l01258"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#af3fc7bd149c70f083b149050242cd55e"> 1258</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#af3fc7bd149c70f083b149050242cd55e">statevec_hadamard</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span> {</div>
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  <span class="comment">// flag to require memory exchange. 1: an entire block fits on one rank, 0: at most half a block fits on one rank</span></div>
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>  <span class="keywordtype">int</span> useLocalDataOnly = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  </div>
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  </div>
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  <a class="code" href="QuEST__cpu_8c.html#a86dbcc3db99294add9964741e19fbdab">statevec_hadamardLocal</a>(qureg, targetQubit);</div>
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  rankIsUpper = <a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a>(rankIsUpper, qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targetQubit);</div>
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  <span class="comment">//printf("%d rank has pair rank: %d\n", qureg.rank, pairRank);</span></div>
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>  <span class="comment">// this rank's values are either in the upper of lower half of the block. send values to hadamardDistributed</span></div>
<div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>  <a class="code" href="QuEST__cpu_8c.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a>(qureg,</div>
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, rankIsUpper); <span class="comment">//output</span></div>
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  <a class="code" href="QuEST__cpu_8c.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a>(qureg,</div>
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, rankIsUpper); <span class="comment">//output</span></div>
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  }</div>
<div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>  }</div>
<div class="line"><a name="l01291"></a><span class="lineno"> 1291</span> }</div>
<div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>  </div>
<div class="line"><a name="l01303"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41"> 1303</a></span> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a>(<span class="keywordtype">int</span> chunkId, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkSize, <span class="keywordtype">int</span> measureQubit)</div>
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span> {</div>
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeHalfBlock = 1LL << (measureQubit);</div>
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  <span class="keywordtype">int</span> numChunksToSkip = sizeHalfBlock/chunkSize;</div>
<div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>  <span class="comment">// calculate probability by summing over numChunksToSkip, then skipping numChunksToSkip, etc</span></div>
<div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>  <span class="keywordtype">int</span> bitToCheck = chunkId & numChunksToSkip;</div>
<div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>  <span class="keywordflow">return</span> bitToCheck;</div>
<div class="line"><a name="l01310"></a><span class="lineno"> 1310</span> }</div>
<div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>  </div>
<div class="line"><a name="l01312"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a63cb88a5f4eb12fef087435b8db3f8eb"> 1312</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a63cb88a5f4eb12fef087435b8db3f8eb">statevec_calcProbOfOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> measureQubit, <span class="keywordtype">int</span> outcome)</div>
<div class="line"><a name="l01313"></a><span class="lineno"> 1313</span> {</div>
<div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> stateProb=0, totalStateProb=0;</div>
<div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>  <span class="keywordtype">int</span> skipValuesWithinRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, measureQubit);</div>
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>  <span class="keywordflow">if</span> (skipValuesWithinRank) {</div>
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  stateProb = <a class="code" href="QuEST__cpu_8c.html#a8535bc15c2ff249ddddb3fde6eff1490">statevec_findProbabilityOfZeroLocal</a>(qureg, measureQubit);</div>
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>  <span class="keywordflow">if</span> (!<a class="code" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, measureQubit)){</div>
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  stateProb = <a class="code" href="QuEST__cpu_8c.html#a430d98e35f1eae7f0815ac539057cf67">statevec_findProbabilityOfZeroDistributed</a>(qureg);</div>
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  } <span class="keywordflow">else</span> stateProb = 0;</div>
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  }</div>
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  MPI_Allreduce(&stateProb, &totalStateProb, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  <span class="keywordflow">if</span> (outcome==1) totalStateProb = 1.0 - totalStateProb;</div>
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  <span class="keywordflow">return</span> totalStateProb;</div>
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span> }</div>
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  </div>
<div class="line"><a name="l01328"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae37b3eff5d3affbc1edfe216cabc1c53"> 1328</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#ae37b3eff5d3affbc1edfe216cabc1c53">densmatr_calcProbOfOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> measureQubit, <span class="keywordtype">int</span> outcome) {</div>
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  </div>
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> zeroProb = <a class="code" href="QuEST__cpu_8c.html#a8bea931504c90d9bd97e74645667804e">densmatr_findProbabilityOfZeroLocal</a>(qureg, measureQubit);</div>
<div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  </div>
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> outcomeProb;</div>
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  MPI_Allreduce(&zeroProb, &outcomeProb, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>  <span class="keywordflow">if</span> (outcome == 1)</div>
<div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>  outcomeProb = 1.0 - outcomeProb;</div>
<div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>  </div>
<div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>  <span class="keywordflow">return</span> outcomeProb;</div>
<div class="line"><a name="l01338"></a><span class="lineno"> 1338</span> }</div>
<div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>  </div>
<div class="line"><a name="l01340"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a78cf98ea535790bc46069b60bae342c7"> 1340</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a78cf98ea535790bc46069b60bae342c7">statevec_calcProbOfAllOutcomes</a>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* retProbs, <a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span>* qubits, <span class="keywordtype">int</span> numQubits) {</div>
<div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  </div>
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  <span class="comment">// each node populates retProbs with contributions from the subset of amps in each</span></div>
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  <a class="code" href="QuEST__cpu_8c.html#afb1e220c272754d0773aeccdb613b6b3">statevec_calcProbOfAllOutcomesLocal</a>(retProbs, qureg, qubits, numQubits);</div>
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  </div>
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  <span class="comment">// then, retProbs are summed element-wise</span></div>
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  MPI_Allreduce(MPI_IN_PLACE, retProbs, 1LL<<numQubits, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span> }</div>
<div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  </div>
<div class="line"><a name="l01349"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a2c664d8abca0a6f87c2bf4fe75fbff90"> 1349</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a2c664d8abca0a6f87c2bf4fe75fbff90">densmatr_calcProbOfAllOutcomes</a>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>* retProbs, <a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span>* qubits, <span class="keywordtype">int</span> numQubits) {</div>
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  </div>
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  <span class="comment">// each node populates retProbs with contributions from the subset of amps in each</span></div>
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  <a class="code" href="QuEST__cpu_8c.html#a73a6c5647862b882f4ed7d83ec3c3e1f">densmatr_calcProbOfAllOutcomesLocal</a>(retProbs, qureg, qubits, numQubits);</div>
<div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>  </div>
<div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>  <span class="comment">// then, retProbs are summed element-wise</span></div>
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  MPI_Allreduce(MPI_IN_PLACE, retProbs, 1LL<<numQubits, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01356"></a><span class="lineno"> 1356</span> }</div>
<div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>  </div>
<div class="line"><a name="l01358"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae45eefa65f4ecd37bab84fade7cf7f1f"> 1358</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#ae45eefa65f4ecd37bab84fade7cf7f1f">densmatr_calcPurity</a>(<a class="code" href="structQureg.html">Qureg</a> qureg) {</div>
<div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  </div>
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localPurity = <a class="code" href="QuEST__cpu_8c.html#af910c7cf2b85bdc2c399cfe8dbfb8b9c">densmatr_calcPurityLocal</a>(qureg);</div>
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>  </div>
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalPurity;</div>
<div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>  MPI_Allreduce(&localPurity, &globalPurity, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>  </div>
<div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  <span class="keywordflow">return</span> globalPurity;</div>
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</span> }</div>
<div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>  </div>
<div class="line"><a name="l01368"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ab07dc84ee1f2034482f1c186576434be"> 1368</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ab07dc84ee1f2034482f1c186576434be">statevec_collapseToKnownProbOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> measureQubit, <span class="keywordtype">int</span> outcome, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> totalStateProb)</div>
<div class="line"><a name="l01369"></a><span class="lineno"> 1369</span> {</div>
<div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>  <span class="keywordtype">int</span> skipValuesWithinRank = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, measureQubit);</div>
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  <span class="keywordflow">if</span> (skipValuesWithinRank) {</div>
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  <a class="code" href="QuEST__cpu_8c.html#ab02bce0ebbb8f624e8ced8b09b99cdef">statevec_collapseToKnownProbOutcomeLocal</a>(qureg, measureQubit, outcome, totalStateProb);</div>
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  <span class="keywordflow">if</span> (!<a class="code" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a>(qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>, qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, measureQubit)){</div>
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  <span class="comment">// chunk has amps for q=0</span></div>
<div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  <span class="keywordflow">if</span> (outcome==0) <a class="code" href="QuEST__cpu_8c.html#ad09bb76ad67581b03ab176832cca37cf">statevec_collapseToKnownProbOutcomeDistributedRenorm</a>(qureg, measureQubit, </div>
<div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  totalStateProb);</div>
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  <span class="keywordflow">else</span> <a class="code" href="QuEST__cpu_8c.html#a7ea68e9132ed9db9c242353a33dba2f0">statevec_collapseToOutcomeDistributedSetZero</a>(qureg);</div>
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  <span class="comment">// chunk has amps for q=1</span></div>
<div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>  <span class="keywordflow">if</span> (outcome==1) <a class="code" href="QuEST__cpu_8c.html#ad09bb76ad67581b03ab176832cca37cf">statevec_collapseToKnownProbOutcomeDistributedRenorm</a>(qureg, measureQubit, </div>
<div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  totalStateProb);</div>
<div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  <span class="keywordflow">else</span> <a class="code" href="QuEST__cpu_8c.html#a7ea68e9132ed9db9c242353a33dba2f0">statevec_collapseToOutcomeDistributedSetZero</a>(qureg);</div>
<div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>  }</div>
<div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  }</div>
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</span> }</div>
<div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>  </div>
<div class="line"><a name="l01388"></a><span class="lineno"><a class="line" href="group__debug.html#ga555451c697ea4a9d27389155f68fdabc"> 1388</a></span> <span class="keywordtype">void</span> <a class="code" href="group__debug.html#ga555451c697ea4a9d27389155f68fdabc">seedQuEST</a>(<a class="code" href="structQuESTEnv.html">QuESTEnv</a> *env, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span>* seedArray, <span class="keywordtype">int</span> numSeeds) {</div>
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  </div>
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  <span class="comment">// it is imperative every node agrees on the seed, so that random decisions </span></div>
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  <span class="comment">// agree on every node. Hence we use only the master node keys.</span></div>
<div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  MPI_Bcast(seedArray, numSeeds, MPI_UNSIGNED_LONG, 0, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  </div>
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  <span class="comment">// free existing seed array, if exists</span></div>
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>  <span class="keywordflow">if</span> (env-><a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a> != NULL)</div>
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  free(env-><a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a>);</div>
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  </div>
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  <span class="comment">// record keys in permanent heap</span></div>
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  env-><a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a> = malloc(numSeeds * <span class="keyword">sizeof</span> *(env-><a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a>));</div>
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numSeeds; i++)</div>
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>  (env-><a class="code" href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">seeds</a>)[i] = seedArray[i];</div>
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  env-><a class="code" href="structQuESTEnv.html#a46e67e1a5ab930e04ff59f83f1d8630d">numSeeds</a> = numSeeds;</div>
<div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>  </div>
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  <span class="comment">// pass keys to Mersenne Twister seeder</span></div>
<div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  <a class="code" href="mt19937ar_8c.html#ac1283f9b1ed571332f5ffe53545ffc16">init_by_array</a>(seedArray, numSeeds); </div>
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span> }</div>
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  </div>
<div class="line"><a name="l01412"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7"> 1412</a></span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7">getGlobalIndOfOddParityInChunk</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> qb1, <span class="keywordtype">int</span> qb2) {</div>
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkStartInd = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a> * qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>;</div>
<div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> chunkEndInd = chunkStartInd + qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>; <span class="comment">// exclusive</span></div>
<div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> oddParityInd;</div>
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  </div>
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(qb1, chunkStartInd) != <a class="code" href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a>(qb2, chunkStartInd))</div>
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  <span class="keywordflow">return</span> chunkStartInd;</div>
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  </div>
<div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  oddParityInd = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(chunkStartInd, qb1);</div>
<div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  <span class="keywordflow">if</span> (oddParityInd >= chunkStartInd && oddParityInd < chunkEndInd)</div>
<div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>  <span class="keywordflow">return</span> oddParityInd;</div>
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  </div>
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  oddParityInd = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(chunkStartInd, qb2);</div>
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>  <span class="keywordflow">if</span> (oddParityInd >= chunkStartInd && oddParityInd < chunkEndInd)</div>
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  <span class="keywordflow">return</span> oddParityInd;</div>
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>  </div>
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span> }</div>
<div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  </div>
<div class="line"><a name="l01431"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375"> 1431</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">int</span> qb1, <span class="keywordtype">int</span> qb2) {</div>
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  </div>
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  <span class="comment">// perform locally if possible </span></div>
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  <span class="keywordtype">int</span> qbBig = (qb1 > qb2)? qb1 : qb2;</div>
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, qbBig))</div>
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  <span class="keywordflow">return</span> <a class="code" href="QuEST__cpu_8c.html#ab5b51a28caa8792a3f0c637409a694b0">statevec_swapQubitAmpsLocal</a>(qureg, qb1, qb2);</div>
<div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  </div>
<div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>  <span class="comment">// do nothing if this node contains no amplitudes to swap</span></div>
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> oddParityGlobalInd = <a class="code" href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7">getGlobalIndOfOddParityInChunk</a>(qureg, qb1, qb2);</div>
<div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  <span class="keywordflow">if</span> (oddParityGlobalInd == -1)</div>
<div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  </div>
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  <span class="comment">// determine and swap amps with pair node</span></div>
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  <span class="keywordtype">int</span> pairRank = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(oddParityGlobalInd, qb1), qb2) / qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  <a class="code" href="QuEST__cpu_8c.html#abe74a5a9db8340e37b80fbc77338894d">statevec_swapQubitAmpsDistributed</a>(qureg, pairRank, qb1, qb2);</div>
<div class="line"><a name="l01447"></a><span class="lineno"> 1447</span> }</div>
<div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  </div>
<div class="line"><a name="l01458"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#affbd18d7c2ed8d5bd5edb67116501145"> 1458</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#affbd18d7c2ed8d5bd5edb67116501145">statevec_multiControlledTwoQubitUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> ctrlMask, <span class="keywordtype">int</span> q1, <span class="keywordtype">int</span> q2, <a class="code" href="structComplexMatrix4.html">ComplexMatrix4</a> u) {</div>
<div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>  <span class="keywordtype">int</span> q1FitsInNode = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, q1);</div>
<div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>  <span class="keywordtype">int</span> q2FitsInNode = <a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, q2);</div>
<div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>  </div>
<div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  <span class="keywordflow">if</span> (q1FitsInNode && q2FitsInNode) { </div>
<div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>  <a class="code" href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, q1, q2, u);</div>
<div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>  </div>
<div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (q1FitsInNode) {</div>
<div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  <span class="keywordtype">int</span> qSwap = (q1 > 0)? q1-1 : q1+1;</div>
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  </div>
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  <span class="comment">// ensure ctrl == qSwap, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, qSwap))</div>
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, q2), qSwap);</div>
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  </div>
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, qSwap);</div>
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  <a class="code" href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, q1, qSwap, u);</div>
<div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, qSwap);</div>
<div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>  </div>
<div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (q2FitsInNode) {</div>
<div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  <span class="keywordtype">int</span> qSwap = (q2 > 0)? q2-1 : q2+1;</div>
<div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>  </div>
<div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  <span class="comment">// ensure ctrl == qSwap, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, qSwap))</div>
<div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, q1), qSwap);</div>
<div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>  </div>
<div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, qSwap);</div>
<div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  <a class="code" href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, qSwap, q2, u);</div>
<div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, qSwap);</div>
<div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>  </div>
<div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>  <span class="comment">// we know with certainty that both q1 and q2 >= 2</span></div>
<div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>  <span class="keywordtype">int</span> swap1 = 0;</div>
<div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>  <span class="keywordtype">int</span> swap2 = 1;</div>
<div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>  </div>
<div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>  <span class="comment">// if ctrl == swap1 or swap2, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, swap1))</div>
<div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, swap1), q1);</div>
<div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, swap2))</div>
<div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, swap2), q2);</div>
<div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>  </div>
<div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, swap1);</div>
<div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, swap2);</div>
<div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  <a class="code" href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, swap1, swap2, u);</div>
<div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, swap1);</div>
<div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, swap2);</div>
<div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>  }</div>
<div class="line"><a name="l01504"></a><span class="lineno"> 1504</span> }</div>
<div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>  </div>
<div class="line"><a name="l01514"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a0acfe30083d0bc2a84da196378a36122"> 1514</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a0acfe30083d0bc2a84da196378a36122">statevec_multiControlledMultiQubitUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> ctrlMask, <span class="keywordtype">int</span>* targs, <span class="keywordtype">int</span> numTargs, <a class="code" href="structComplexMatrixN.html">ComplexMatrixN</a> u) {</div>
<div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  </div>
<div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>  <span class="comment">// bit mask of target qubits (for quick collision checking)</span></div>
<div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> targMask = <a class="code" href="QuEST__common_8c.html#acc45bb8300922ea5933e294921e25ea2">getQubitBitMask</a>(targs, numTargs);</div>
<div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  </div>
<div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>  <span class="comment">// find lowest qubit available for swapping (isn't in targs)</span></div>
<div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>  <span class="keywordtype">int</span> freeQb=0;</div>
<div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  <span class="keywordflow">while</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(targMask, freeQb))</div>
<div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>  freeQb++;</div>
<div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>  </div>
<div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>  <span class="comment">// assign indices of where each target will be swapped to (else itself)</span></div>
<div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  <span class="keywordtype">int</span> swapTargs[numTargs];</div>
<div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t<numTargs; t++) {</div>
<div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a>(qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>, targs[t]))</div>
<div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  swapTargs[t] = targs[t];</div>
<div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  <span class="comment">// mark swap</span></div>
<div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  swapTargs[t] = freeQb;</div>
<div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  </div>
<div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  <span class="comment">// update ctrlMask if swapped-out qubit was a control</span></div>
<div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(ctrlMask, swapTargs[t]))</div>
<div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a>(ctrlMask, swapTargs[t]), targs[t]); <span class="comment">// swap targ and ctrl</span></div>
<div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  </div>
<div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  <span class="comment">// locate next available on-chunk qubit</span></div>
<div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  freeQb++;</div>
<div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  <span class="keywordflow">while</span> (<a class="code" href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a>(targMask, freeQb))</div>
<div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  freeQb++;</div>
<div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>  }</div>
<div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>  }</div>
<div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>  </div>
<div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  <span class="comment">// perform swaps as necessary </span></div>
<div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t<numTargs; t++)</div>
<div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  <span class="keywordflow">if</span> (swapTargs[t] != targs[t])</div>
<div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, targs[t], swapTargs[t]);</div>
<div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>  </div>
<div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>  <span class="comment">// all target qubits have now been swapped into local memory</span></div>
<div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>  <a class="code" href="QuEST__cpu_8c.html#a0aedcccfa50c7aaa8b7fc4c14d7cdfb8">statevec_multiControlledMultiQubitUnitaryLocal</a>(qureg, ctrlMask, swapTargs, numTargs, u);</div>
<div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>  </div>
<div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>  <span class="comment">// undo swaps </span></div>
<div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t<numTargs; t++)</div>
<div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  <span class="keywordflow">if</span> (swapTargs[t] != targs[t])</div>
<div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, targs[t], swapTargs[t]);</div>
<div class="line"><a name="l01556"></a><span class="lineno"> 1556</span> }</div>
<div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>  </div>
<div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  </div>
<div class="line"><a name="l01559"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aefba328e047e6ef4fd1ae4b56901aaa7"> 1559</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aefba328e047e6ef4fd1ae4b56901aaa7">copyDiagOpIntoMatrixPairState</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structDiagonalOp.html">DiagonalOp</a> op) {</div>
<div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>  </div>
<div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  <span class="comment">/* since, for every elem in 2^N op, there is a column in 2^N x 2^N qureg, </span></div>
<div class="line"><a name="l01562"></a><span class="lineno"> 1562</span> <span class="comment"> * we know immediately (by each node containing at least 1 element of op)</span></div>
<div class="line"><a name="l01563"></a><span class="lineno"> 1563</span> <span class="comment"> * that every node contains at least 1 column. Hence, we know that pairStateVec </span></div>
<div class="line"><a name="l01564"></a><span class="lineno"> 1564</span> <span class="comment"> * of qureg can fit the entirety of op.</span></div>
<div class="line"><a name="l01565"></a><span class="lineno"> 1565</span> <span class="comment"> */</span></div>
<div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  </div>
<div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  <span class="comment">// load up our local contribution</span></div>
<div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> localOffset = qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a> * op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a>;</div>
<div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  memcpy(&qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[localOffset], op.<a class="code" href="structDiagonalOp.html#a1d66088bed235d524cd452b107694d5c">real</a>, op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a> * <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>));</div>
<div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  memcpy(&qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[localOffset], op.<a class="code" href="structDiagonalOp.html#a85c3f52533efe831bbe40b9a48602388">imag</a>, op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a> * <span class="keyword">sizeof</span>(<a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a>));</div>
<div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>  </div>
<div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  <span class="comment">// work out how many messages are needed to send op chunks (2GB limit)</span></div>
<div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> maxMsgSize = MPI_MAX_AMPS_IN_MSG;</div>
<div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>  <span class="keywordflow">if</span> (op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a> < maxMsgSize) </div>
<div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>  maxMsgSize = op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a>;</div>
<div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>  <span class="keywordtype">int</span> numMsgs = op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a> / maxMsgSize; <span class="comment">// since MPI_MAX... = 2^n, division is exact</span></div>
<div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>  </div>
<div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>  <span class="comment">// each node has a turn at broadcasting its contribution of op</span></div>
<div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> broadcaster=0; broadcaster < qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>; broadcaster++) {</div>
<div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> broadOffset = broadcaster * op.<a class="code" href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">numElemsPerChunk</a>;</div>
<div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>  </div>
<div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>  <span class="comment">// (while keeping each message smaller than MPI max)</span></div>
<div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<numMsgs; i++) {</div>
<div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>  MPI_Bcast(</div>
<div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[broadOffset + i*maxMsgSize], </div>
<div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>  maxMsgSize, MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>  MPI_Bcast(</div>
<div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[broadOffset + i*maxMsgSize], </div>
<div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>  maxMsgSize, MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>  }</div>
<div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>  }</div>
<div class="line"><a name="l01592"></a><span class="lineno"> 1592</span> }</div>
<div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>  </div>
<div class="line"><a name="l01594"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aedd7ecccf2f09dd2f1c5d191950b51e6"> 1594</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aedd7ecccf2f09dd2f1c5d191950b51e6">densmatr_applyDiagonalOp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structDiagonalOp.html">DiagonalOp</a> op) {</div>
<div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>  </div>
<div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#aefba328e047e6ef4fd1ae4b56901aaa7">copyDiagOpIntoMatrixPairState</a>(qureg, op);</div>
<div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>  <a class="code" href="QuEST__cpu_8c.html#afa58cf7cb98a25ab33621120c5c330d0">densmatr_applyDiagonalOpLocal</a>(qureg, op);</div>
<div class="line"><a name="l01598"></a><span class="lineno"> 1598</span> }</div>
<div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>  </div>
<div class="line"><a name="l01600"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a0fb948ddab4ca210e523aa3c52639df4"> 1600</a></span> <a class="code" href="structComplex.html">Complex</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a0fb948ddab4ca210e523aa3c52639df4">statevec_calcExpecDiagonalOp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structDiagonalOp.html">DiagonalOp</a> op) {</div>
<div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>  </div>
<div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>  <a class="code" href="structComplex.html">Complex</a> localExpec = <a class="code" href="QuEST__cpu_8c.html#a16ccb485bcffb328bbd5b2af6977cead">statevec_calcExpecDiagonalOpLocal</a>(qureg, op);</div>
<div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a> == 1)</div>
<div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>  <span class="keywordflow">return</span> localExpec;</div>
<div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>  </div>
<div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localReal = localExpec.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>;</div>
<div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localImag = localExpec.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>;</div>
<div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalReal, globalImag;</div>
<div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>  MPI_Allreduce(&localReal, &globalReal, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>  MPI_Allreduce(&localImag, &globalImag, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>  </div>
<div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>  <a class="code" href="structComplex.html">Complex</a> globalExpec;</div>
<div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>  globalExpec.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a> = globalReal;</div>
<div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>  globalExpec.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a> = globalImag;</div>
<div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>  <span class="keywordflow">return</span> globalExpec;</div>
<div class="line"><a name="l01616"></a><span class="lineno"> 1616</span> }</div>
<div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>  </div>
<div class="line"><a name="l01618"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a70e3b0a2297c186d5c779af31459b4ca"> 1618</a></span> <a class="code" href="structComplex.html">Complex</a> <a class="code" href="QuEST__cpu__distributed_8c.html#a70e3b0a2297c186d5c779af31459b4ca">densmatr_calcExpecDiagonalOp</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <a class="code" href="structDiagonalOp.html">DiagonalOp</a> op) {</div>
<div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>  </div>
<div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>  <a class="code" href="structComplex.html">Complex</a> localVal = <a class="code" href="QuEST__cpu_8c.html#aeb4453a2e609e5359d2995bccf6663ca">densmatr_calcExpecDiagonalOpLocal</a>(qureg, op);</div>
<div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a> == 1)</div>
<div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>  <span class="keywordflow">return</span> localVal;</div>
<div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>  </div>
<div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localRe = localVal.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a>;</div>
<div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> localIm = localVal.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a>;</div>
<div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalRe, globalIm;</div>
<div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>  </div>
<div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>  MPI_Allreduce(&localRe, &globalRe, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>  MPI_Allreduce(&localIm, &globalIm, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>  </div>
<div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>  <a class="code" href="structComplex.html">Complex</a> globalVal;</div>
<div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>  globalVal.<a class="code" href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">real</a> = globalRe;</div>
<div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>  globalVal.<a class="code" href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">imag</a> = globalIm;</div>
<div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>  <span class="keywordflow">return</span> globalVal;</div>
<div class="line"><a name="l01635"></a><span class="lineno"> 1635</span> }</div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a398b60c4cb4fa2cf2ffc126de6c08da0"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a398b60c4cb4fa2cf2ffc126de6c08da0">densmatr_mixDepolarising</a></div><div class="ttdeci">void densmatr_mixDepolarising(Qureg qureg, int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00712">QuEST_cpu_distributed.c:712</a></div></div>
<div class="ttc" id="agroup__type_html_gaeff624226629d7063a8a776958a4f991"><div class="ttname"><a href="group__type.html#gaeff624226629d7063a8a776958a4f991">destroyQuESTEnv</a></div><div class="ttdeci">void destroyQuESTEnv(QuESTEnv env)</div><div class="ttdoc">Destroy the QuEST environment.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00174">QuEST_cpu_distributed.c:174</a></div></div>
<div class="ttc" id="amt19937ar_8c_html_ac1283f9b1ed571332f5ffe53545ffc16"><div class="ttname"><a href="mt19937ar_8c.html#ac1283f9b1ed571332f5ffe53545ffc16">init_by_array</a></div><div class="ttdeci">void init_by_array(unsigned long init_key[], int key_length)</div><div class="ttdef"><b>Definition:</b> <a href="mt19937ar_8c_source.html#l00080">mt19937ar.c:80</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a63cb88a5f4eb12fef087435b8db3f8eb"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a63cb88a5f4eb12fef087435b8db3f8eb">statevec_calcProbOfOutcome</a></div><div class="ttdeci">qreal statevec_calcProbOfOutcome(Qureg qureg, int measureQubit, int outcome)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01312">QuEST_cpu_distributed.c:1312</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae37b3eff5d3affbc1edfe216cabc1c53"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae37b3eff5d3affbc1edfe216cabc1c53">densmatr_calcProbOfOutcome</a></div><div class="ttdeci">qreal densmatr_calcProbOfOutcome(Qureg qureg, int measureQubit, int outcome)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01328">QuEST_cpu_distributed.c:1328</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_abd509244d57657e148e4084c5ab5d28f"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#abd509244d57657e148e4084c5ab5d28f">statevec_getImagAmp</a></div><div class="ttdeci">qreal statevec_getImagAmp(Qureg qureg, long long int index)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00222">QuEST_cpu_distributed.c:222</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_af3fc7bd149c70f083b149050242cd55e"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#af3fc7bd149c70f083b149050242cd55e">statevec_hadamard</a></div><div class="ttdeci">void statevec_hadamard(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01258">QuEST_cpu_distributed.c:1258</a></div></div>
<div class="ttc" id="agroup__debug_html_ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77"><div class="ttname"><a href="group__debug.html#ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77">syncQuESTEnv</a></div><div class="ttdeci">void syncQuESTEnv(QuESTEnv env)</div><div class="ttdoc">Guarantees that all code up to the given point has been executed on all nodes (if running in distribu...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00164">QuEST_cpu_distributed.c:164</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ace1482ef82b83e7f926634a67b322fc4"><div class="ttname"><a href="QuEST__cpu_8c.html#ace1482ef82b83e7f926634a67b322fc4">statevec_controlledNotLocal</a></div><div class="ttdeci">void statevec_controlledNotLocal(Qureg qureg, int controlQubit, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02679">QuEST_cpu.c:2679</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_adb4b0373425b282abed27742d0ce0872"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a></div><div class="ttdeci">static void getRotAngle(int chunkIsUpper, Complex *rot1, Complex *rot2, Complex alpha, Complex beta)</div><div class="ttdoc">Get rotation values for a given chunk.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00272">QuEST_cpu_distributed.c:272</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a45b0916c3e121837f214b64f7424e479"><div class="ttname"><a href="QuEST__cpu_8c.html#a45b0916c3e121837f214b64f7424e479">statevec_pauliYLocal</a></div><div class="ttdeci">void statevec_pauliYLocal(Qureg qureg, int targetQubit, int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02887">QuEST_cpu.c:2887</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a6ff3dc624b5fafe8edae4fe327c255a0"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a6ff3dc624b5fafe8edae4fe327c255a0">densmatr_calcInnerProduct</a></div><div class="ttdeci">qreal densmatr_calcInnerProduct(Qureg a, Qureg b)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00455">QuEST_cpu_distributed.c:455</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a939897137596bb73ad7a028d0beaaa10"><div class="ttname"><a href="QuEST__cpu_8c.html#a939897137596bb73ad7a028d0beaaa10">densmatr_calcHilbertSchmidtDistanceSquaredLocal</a></div><div class="ttdeci">qreal densmatr_calcHilbertSchmidtDistanceSquaredLocal(Qureg a, Qureg b)</div><div class="ttdoc">computes Tr((a-b) conjTrans(a-b)) = sum of abs values of (a-b)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00934">QuEST_cpu.c:934</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a2c664d8abca0a6f87c2bf4fe75fbff90"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a2c664d8abca0a6f87c2bf4fe75fbff90">densmatr_calcProbOfAllOutcomes</a></div><div class="ttdeci">void densmatr_calcProbOfAllOutcomes(qreal *retProbs, Qureg qureg, int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01349">QuEST_cpu_distributed.c:1349</a></div></div>
<div class="ttc" id="astructQuESTEnv_html_aa648bb336cf8598467cb62db00b9cee8"><div class="ttname"><a href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">QuESTEnv::rank</a></div><div class="ttdeci">int rank</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00364">QuEST.h:364</a></div></div>
<div class="ttc" id="agroup__debug_html_gae53fad7ebafccf236ad62b41e3244214"><div class="ttname"><a href="group__debug.html#gae53fad7ebafccf236ad62b41e3244214">seedQuESTDefault</a></div><div class="ttdeci">void seedQuESTDefault(QuESTEnv *env)</div><div class="ttdoc">Seeds the random number generator with the (master node) current time and process ID.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8c_source.html#l01614">QuEST.c:1614</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a73a6c5647862b882f4ed7d83ec3c3e1f"><div class="ttname"><a href="QuEST__cpu_8c.html#a73a6c5647862b882f4ed7d83ec3c3e1f">densmatr_calcProbOfAllOutcomesLocal</a></div><div class="ttdeci">void densmatr_calcProbOfAllOutcomesLocal(qreal *outcomeProbs, Qureg qureg, int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03616">QuEST_cpu.c:3616</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_af0ea25f00987af4c53f17c9cca62ab41"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41">isChunkToSkipInFindPZero</a></div><div class="ttdeci">static int isChunkToSkipInFindPZero(int chunkId, long long int chunkSize, int measureQubit)</div><div class="ttdoc">Find chunks to skip when calculating probability of qubit being zero.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01303">QuEST_cpu_distributed.c:1303</a></div></div>
<div class="ttc" id="astructQureg_html_aba97773694870ef35e378c036f486bb7"><div class="ttname"><a href="structQureg.html#aba97773694870ef35e378c036f486bb7">Qureg::pairStateVec</a></div><div class="ttdeci">ComplexArray pairStateVec</div><div class="ttdoc">Temporary storage for a chunk of the state vector received from another process in the MPI version.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00343">QuEST.h:343</a></div></div>
<div class="ttc" id="aQuEST__internal_8h_html"><div class="ttname"><a href="QuEST__internal_8h.html">QuEST_internal.h</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a430d98e35f1eae7f0815ac539057cf67"><div class="ttname"><a href="QuEST__cpu_8c.html#a430d98e35f1eae7f0815ac539057cf67">statevec_findProbabilityOfZeroDistributed</a></div><div class="ttdeci">qreal statevec_findProbabilityOfZeroDistributed(Qureg qureg)</div><div class="ttdoc">Measure the probability of a specified qubit being in the zero state across all amplitudes held in th...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03513">QuEST_cpu.c:3513</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a88670d0e7cebe33f61c1dd98daa338b3"><div class="ttname"><a href="QuEST__cpu_8c.html#a88670d0e7cebe33f61c1dd98daa338b3">densmatr_mixDepolarisingDistributed</a></div><div class="ttdeci">void densmatr_mixDepolarisingDistributed(Qureg qureg, int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00230">QuEST_cpu.c:230</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_acabdfbd3184d3ab3bded61e24142b800"><div class="ttname"><a href="QuEST__cpu_8c.html#acabdfbd3184d3ab3bded61e24142b800">densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3(Qureg qureg, int targetQubit, int qubit2, qreal delta, qreal gamma)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00638">QuEST_cpu.c:638</a></div></div>
<div class="ttc" id="agroup__debug_html_gadc5c01d8ea32e28c188db52be26116b6"><div class="ttname"><a href="group__debug.html#gadc5c01d8ea32e28c188db52be26116b6">getEnvironmentString</a></div><div class="ttdeci">void getEnvironmentString(QuESTEnv env, char str[200])</div><div class="ttdoc">Sets str to a string containing information about the runtime environment, including whether simulati...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00198">QuEST_cpu_distributed.c:198</a></div></div>
<div class="ttc" id="astructQuESTEnv_html_a46e67e1a5ab930e04ff59f83f1d8630d"><div class="ttname"><a href="structQuESTEnv.html#a46e67e1a5ab930e04ff59f83f1d8630d">QuESTEnv::numSeeds</a></div><div class="ttdeci">int numSeeds</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00367">QuEST.h:367</a></div></div>
<div class="ttc" id="aQuEST_8h_html"><div class="ttname"><a href="QuEST_8h.html">QuEST.h</a></div></div>
<div class="ttc" id="astructQureg_html_aa3deb7163aab90a61e755a1f200f5413"><div class="ttname"><a href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">Qureg::numChunks</a></div><div class="ttdeci">int numChunks</div><div class="ttdoc">Number of chunks the state vector is broken up into – the number of MPI processes used.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00338">QuEST.h:338</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aa6c3f86010ad398f42b0577ea3bb5bcf"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aa6c3f86010ad398f42b0577ea3bb5bcf">densmatr_calcFidelity</a></div><div class="ttdeci">qreal densmatr_calcFidelity(Qureg qureg, Qureg pureState)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00429">QuEST_cpu_distributed.c:429</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab5b51a28caa8792a3f0c637409a694b0"><div class="ttname"><a href="QuEST__cpu_8c.html#ab5b51a28caa8792a3f0c637409a694b0">statevec_swapQubitAmpsLocal</a></div><div class="ttdeci">void statevec_swapQubitAmpsLocal(Qureg qureg, int qb1, int qb2)</div><div class="ttdoc">It is ensured that all amplitudes needing to be swapped are on this node.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03922">QuEST_cpu.c:3922</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab58fe4be895283c2c4eb86ec9af5682e"><div class="ttname"><a href="QuEST__cpu_8c.html#ab58fe4be895283c2c4eb86ec9af5682e">statevec_multiControlledUnitaryDistributed</a></div><div class="ttdeci">void statevec_multiControlledUnitaryDistributed(Qureg qureg, int targetQubit, long long int ctrlQubitsMask, long long int ctrlFlipMask, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Apply a unitary operation to a single qubit in the state vector of probability amplitudes,...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02542">QuEST_cpu.c:2542</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ac7d30ce54573c75b35386cd0e284adc5"><div class="ttname"><a href="QuEST__cpu_8c.html#ac7d30ce54573c75b35386cd0e284adc5">statevec_multiControlledMultiQubitNotLocal</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitNotLocal(Qureg qureg, int ctrlMask, int targMask)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02778">QuEST_cpu.c:2778</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a57368529b2a7e76fec423cbfe9980b22"><div class="ttname"><a href="QuEST__cpu_8c.html#a57368529b2a7e76fec423cbfe9980b22">statevec_controlledUnitaryDistributed</a></div><div class="ttdeci">void statevec_controlledUnitaryDistributed(Qureg qureg, int controlQubit, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02476">QuEST_cpu.c:2476</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab02bce0ebbb8f624e8ced8b09b99cdef"><div class="ttname"><a href="QuEST__cpu_8c.html#ab02bce0ebbb8f624e8ced8b09b99cdef">statevec_collapseToKnownProbOutcomeLocal</a></div><div class="ttdeci">void statevec_collapseToKnownProbOutcomeLocal(Qureg qureg, int measureQubit, int outcome, qreal totalProbability)</div><div class="ttdoc">Update the state vector to be consistent with measuring measureQubit=0 if outcome=0 and measureQubit=...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03767">QuEST_cpu.c:3767</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a0fb948ddab4ca210e523aa3c52639df4"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a0fb948ddab4ca210e523aa3c52639df4">statevec_calcExpecDiagonalOp</a></div><div class="ttdeci">Complex statevec_calcExpecDiagonalOp(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01600">QuEST_cpu_distributed.c:1600</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a70e3b0a2297c186d5c779af31459b4ca"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a70e3b0a2297c186d5c779af31459b4ca">densmatr_calcExpecDiagonalOp</a></div><div class="ttdeci">Complex densmatr_calcExpecDiagonalOp(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01618">QuEST_cpu_distributed.c:1618</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a373394db1bf71b0be63585c0e9a52abb"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a373394db1bf71b0be63585c0e9a52abb">compressPairVectorForTwoQubitDepolarise</a></div><div class="ttdeci">void compressPairVectorForTwoQubitDepolarise(Qureg qureg, int targetQubit, int qubit2)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00624">QuEST_cpu_distributed.c:624</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a5ddfdb22e4704b680d67d08d9e80835b"><div class="ttname"><a href="QuEST__cpu_8c.html#a5ddfdb22e4704b680d67d08d9e80835b">statevec_compactUnitaryLocal</a></div><div class="ttdeci">void statevec_compactUnitaryLocal(Qureg qureg, int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01754">QuEST_cpu.c:1754</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_af910c7cf2b85bdc2c399cfe8dbfb8b9c"><div class="ttname"><a href="QuEST__cpu_8c.html#af910c7cf2b85bdc2c399cfe8dbfb8b9c">densmatr_calcPurityLocal</a></div><div class="ttdeci">qreal densmatr_calcPurityLocal(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00872">QuEST_cpu.c:872</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a16ccb485bcffb328bbd5b2af6977cead"><div class="ttname"><a href="QuEST__cpu_8c.html#a16ccb485bcffb328bbd5b2af6977cead">statevec_calcExpecDiagonalOpLocal</a></div><div class="ttdeci">Complex statevec_calcExpecDiagonalOpLocal(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l04124">QuEST_cpu.c:4124</a></div></div>
<div class="ttc" id="astructComplexMatrix4_html"><div class="ttname"><a href="structComplexMatrix4.html">ComplexMatrix4</a></div><div class="ttdoc">Represents a 4x4 matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00175">QuEST.h:175</a></div></div>
<div class="ttc" id="astructQuESTEnv_html"><div class="ttname"><a href="structQuESTEnv.html">QuESTEnv</a></div><div class="ttdoc">Information about the environment the program is running in.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00362">QuEST.h:362</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a0aedcccfa50c7aaa8b7fc4c14d7cdfb8"><div class="ttname"><a href="QuEST__cpu_8c.html#a0aedcccfa50c7aaa8b7fc4c14d7cdfb8">statevec_multiControlledMultiQubitUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitUnitaryLocal(Qureg qureg, long long int ctrlMask, int *targs, int numTargs, ComplexMatrixN u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01912">QuEST_cpu.c:1912</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_af8236a00389137b5eff986a40577eaf3"><div class="ttname"><a href="QuEST__cpu_8c.html#af8236a00389137b5eff986a40577eaf3">statevec_multiControlledTwoQubitUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledTwoQubitUnitaryLocal(Qureg qureg, long long int ctrlMask, int q1, int q2, ComplexMatrix4 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01813">QuEST_cpu.c:1813</a></div></div>
<div class="ttc" id="astructComplexMatrixN_html"><div class="ttname"><a href="structComplexMatrixN.html">ComplexMatrixN</a></div><div class="ttdoc">Represents a general 2^N by 2^N matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00186">QuEST.h:186</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a464efbd1d7ca5a7b25c83ada001955c2"><div class="ttname"><a href="QuEST__cpu_8c.html#a464efbd1d7ca5a7b25c83ada001955c2">statevec_pauliXDistributed</a></div><div class="ttdeci">void statevec_pauliXDistributed(Qureg qureg, ComplexArray stateVecIn, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit by {{0,1},{1,0}.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02651">QuEST_cpu.c:2651</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae66dc6569c6e4008c33d6739db422c08"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08">getChunkOuterBlockPairId</a></div><div class="ttdeci">static int getChunkOuterBlockPairId(int chunkIsUpper, int chunkId, long long int chunkSize, int targetQubit, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00328">QuEST_cpu_distributed.c:328</a></div></div>
<div class="ttc" id="amt19937ar_8h_html"><div class="ttname"><a href="mt19937ar_8h.html">mt19937ar.h</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_abb2eab4af99adcc59be24f4c91c6f6ad"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#abb2eab4af99adcc59be24f4c91c6f6ad">statevec_controlledNot</a></div><div class="ttdeci">void statevec_controlledNot(Qureg qureg, int controlQubit, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01075">QuEST_cpu_distributed.c:1075</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a95af772d87c461fc8abfd6d47b752ac2"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a></div><div class="ttdeci">void copyVecIntoMatrixPairState(Qureg matr, Qureg vec)</div><div class="ttdoc">This copies/clones vec (a statevector) into every node's matr pairState.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00385">QuEST_cpu_distributed.c:385</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a7ebd3198a198f4cd20840f64fd8b84d0"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a7ebd3198a198f4cd20840f64fd8b84d0">statevec_calcInnerProduct</a></div><div class="ttdeci">Complex statevec_calcInnerProduct(Qureg bra, Qureg ket)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00035">QuEST_cpu_distributed.c:35</a></div></div>
<div class="ttc" id="agroup__type_html_ga7740e349b4f8bae6451547680f0ce2d6"><div class="ttname"><a href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a></div><div class="ttdeci">#define qreal</div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a600bda10463e2078ce746ec28f2d39c9"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a600bda10463e2078ce746ec28f2d39c9">statevec_multiControlledUnitary</a></div><div class="ttdeci">void statevec_multiControlledUnitary(Qureg qureg, long long int ctrlQubitsMask, long long int ctrlFlipMask, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01011">QuEST_cpu_distributed.c:1011</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a81fbd2eccd0d0e5a3cece4df2f96cb92"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a81fbd2eccd0d0e5a3cece4df2f96cb92">statevec_pauliYConj</a></div><div class="ttdeci">void statevec_pauliYConj(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01167">QuEST_cpu_distributed.c:1167</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_afb1e220c272754d0773aeccdb613b6b3"><div class="ttname"><a href="QuEST__cpu_8c.html#afb1e220c272754d0773aeccdb613b6b3">statevec_calcProbOfAllOutcomesLocal</a></div><div class="ttdeci">void statevec_calcProbOfAllOutcomesLocal(qreal *outcomeProbs, Qureg qureg, int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03549">QuEST_cpu.c:3549</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a37dae401754961c9100b3c0907913c3e"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a></div><div class="ttdeci">void exchangePairStateVectorHalves(Qureg qureg, int pairRank)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00523">QuEST_cpu_distributed.c:523</a></div></div>
<div class="ttc" id="aQuEST__gpu_8cu_html_ae1b7788cf504ec3d79de3855f97929c7"><div class="ttname"><a href="QuEST__gpu_8cu.html#ae1b7788cf504ec3d79de3855f97929c7">flipBit</a></div><div class="ttdeci">__forceinline__ __device__ long long int flipBit(const long long int number, const int bitInd)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__gpu_8cu_source.html#l00095">QuEST_gpu.cu:95</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a4e19ef93d01d7acea32ca646d623aedd"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4e19ef93d01d7acea32ca646d623aedd">statevec_controlledPauliY</a></div><div class="ttdeci">void statevec_controlledPauliY(Qureg qureg, int controlQubit, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01192">QuEST_cpu_distributed.c:1192</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ab7478fcaf6357ab202d72853b672e375"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a></div><div class="ttdeci">void statevec_swapQubitAmps(Qureg qureg, int qb1, int qb2)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01431">QuEST_cpu_distributed.c:1431</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a7dba097f23f5d48dfdc9f3250444e2e4"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4">getChunkPairId</a></div><div class="ttdeci">static int getChunkPairId(int chunkIsUpper, int chunkId, long long int chunkSize, int targetQubit)</div><div class="ttdoc">get position of corresponding chunk, holding values required to update values in my chunk (with chunk...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00317">QuEST_cpu_distributed.c:317</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae45eefa65f4ecd37bab84fade7cf7f1f"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae45eefa65f4ecd37bab84fade7cf7f1f">densmatr_calcPurity</a></div><div class="ttdeci">qreal densmatr_calcPurity(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01358">QuEST_cpu_distributed.c:1358</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a7ea68e9132ed9db9c242353a33dba2f0"><div class="ttname"><a href="QuEST__cpu_8c.html#a7ea68e9132ed9db9c242353a33dba2f0">statevec_collapseToOutcomeDistributedSetZero</a></div><div class="ttdeci">void statevec_collapseToOutcomeDistributedSetZero(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03887">QuEST_cpu.c:3887</a></div></div>
<div class="ttc" id="astructQureg_html_ac2929e681d3d95591c18cf168dbbe4f0"><div class="ttname"><a href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">Qureg::chunkId</a></div><div class="ttdeci">int chunkId</div><div class="ttdoc">The position of the chunk of the state vector held by this process in the full state vector.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00336">QuEST.h:336</a></div></div>
<div class="ttc" id="astructComplexMatrix2_html_a3a2b60a9e00ccef054a6de3b9307c1be"><div class="ttname"><a href="structComplexMatrix2.html#a3a2b60a9e00ccef054a6de3b9307c1be">ComplexMatrix2::imag</a></div><div class="ttdeci">qreal imag[2][2]</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00140">QuEST.h:140</a></div></div>
<div class="ttc" id="aQuEST__cpu__internal_8h_html"><div class="ttname"><a href="QuEST__cpu__internal_8h.html">QuEST_cpu_internal.h</a></div></div>
<div class="ttc" id="astructDiagonalOp_html_a85c3f52533efe831bbe40b9a48602388"><div class="ttname"><a href="structDiagonalOp.html#a85c3f52533efe831bbe40b9a48602388">DiagonalOp::imag</a></div><div class="ttdeci">qreal * imag</div><div class="ttdoc">The imaginary values of the 2^numQubits complex elements.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00310">QuEST.h:310</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_affbd18d7c2ed8d5bd5edb67116501145"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#affbd18d7c2ed8d5bd5edb67116501145">statevec_multiControlledTwoQubitUnitary</a></div><div class="ttdeci">void statevec_multiControlledTwoQubitUnitary(Qureg qureg, long long int ctrlMask, int q1, int q2, ComplexMatrix4 u)</div><div class="ttdoc">This calls swapQubitAmps only when it would involve a distributed communication; if the qubit chunks ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01458">QuEST_cpu_distributed.c:1458</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a0eb14d48920ea469b0904ae63b47b589"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a0eb14d48920ea469b0904ae63b47b589">compressPairVectorForSingleQubitDepolarise</a></div><div class="ttdeci">void compressPairVectorForSingleQubitDepolarise(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00557">QuEST_cpu_distributed.c:557</a></div></div>
<div class="ttc" id="astructQureg_html_ab0ea0358482b62f43fdd781469607d97"><div class="ttname"><a href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">Qureg::numAmpsPerChunk</a></div><div class="ttdeci">long long int numAmpsPerChunk</div><div class="ttdoc">Number of probability amplitudes held in stateVec by this process In the non-MPI version,...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00332">QuEST.h:332</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a3510f01d4d15dcc545564eb84c668cad"><div class="ttname"><a href="QuEST__cpu_8c.html#a3510f01d4d15dcc545564eb84c668cad">densmatr_mixTwoQubitDepolarisingLocal</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingLocal(Qureg qureg, int qubit1, int qubit2, qreal delta, qreal gamma)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00393">QuEST_cpu.c:393</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a5c9b2f129bdffaaba9857f6eddecbb17"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a></div><div class="ttdeci">static void getRotAngleFromUnitaryMatrix(int chunkIsUpper, Complex *rot1, Complex *rot2, ComplexMatrix2 u)</div><div class="ttdoc">Get rotation values for a given chunk given a unitary matrix.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00297">QuEST_cpu_distributed.c:297</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a06fb16aa4af7c54d36052a14d3ad58a7"><div class="ttname"><a href="QuEST__cpu_8c.html#a06fb16aa4af7c54d36052a14d3ad58a7">statevec_controlledPauliYLocal</a></div><div class="ttdeci">void statevec_controlledPauliYLocal(Qureg qureg, int controlQubit, int targetQubit, int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02982">QuEST_cpu.c:2982</a></div></div>
<div class="ttc" id="astructQuESTEnv_html_af22aacd7c9905accae28484785c193b4"><div class="ttname"><a href="structQuESTEnv.html#af22aacd7c9905accae28484785c193b4">QuESTEnv::numRanks</a></div><div class="ttdeci">int numRanks</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00365">QuEST.h:365</a></div></div>
<div class="ttc" id="aQuEST__internal_8h_html_a623e577b7230f3c8dc202be6185b4289"><div class="ttname"><a href="QuEST__internal_8h.html#a623e577b7230f3c8dc202be6185b4289">densmatr_mixTwoQubitDephasing</a></div><div class="ttdeci">void densmatr_mixTwoQubitDephasing(Qureg qureg, int qubit1, int qubit2, qreal dephase)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00090">QuEST_cpu.c:90</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a0a7a35628b1c1eb47336deb9afda5b68"><div class="ttname"><a href="QuEST__cpu_8c.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a></div><div class="ttdeci">void statevec_compactUnitaryDistributed(Qureg qureg, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02095">QuEST_cpu.c:2095</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a6153547f245c05874161a105e9a2f02c"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a6153547f245c05874161a105e9a2f02c">densmatr_calcTotalProb</a></div><div class="ttdeci">qreal densmatr_calcTotalProb(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00053">QuEST_cpu_distributed.c:53</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae01c3eb75fd32de1a7e1dbc7a33a21e3"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a></div><div class="ttdeci">void exchangeStateVectors(Qureg qureg, int pairRank)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00493">QuEST_cpu_distributed.c:493</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab19f28e68330da68ea3caa2bdef32da9"><div class="ttname"><a href="QuEST__cpu_8c.html#ab19f28e68330da68ea3caa2bdef32da9">statevec_multiControlledUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledUnitaryLocal(Qureg qureg, int targetQubit, long long int ctrlQubitsMask, long long int ctrlFlipMask, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02268">QuEST_cpu.c:2268</a></div></div>
<div class="ttc" id="aQuEST__common_8c_html_acc45bb8300922ea5933e294921e25ea2"><div class="ttname"><a href="QuEST__common_8c.html#acc45bb8300922ea5933e294921e25ea2">getQubitBitMask</a></div><div class="ttdeci">long long int getQubitBitMask(int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__common_8c_source.html#l00050">QuEST_common.c:50</a></div></div>
<div class="ttc" id="astructDiagonalOp_html"><div class="ttname"><a href="structDiagonalOp.html">DiagonalOp</a></div><div class="ttdoc">Represents a diagonal complex operator on the full Hilbert state of a Qureg.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00297">QuEST.h:297</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a1c82b5e914a8a39c5c7b782dbc16fa76"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a1c82b5e914a8a39c5c7b782dbc16fa76">statevec_pauliX</a></div><div class="ttdeci">void statevec_pauliX(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01048">QuEST_cpu_distributed.c:1048</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a0f562af6cb665a8a7a3f80e9449734d5"><div class="ttname"><a href="QuEST__cpu_8c.html#a0f562af6cb665a8a7a3f80e9449734d5">statevec_pauliYDistributed</a></div><div class="ttdeci">void statevec_pauliYDistributed(Qureg qureg, ComplexArray stateVecIn, ComplexArray stateVecOut, int updateUpper, int conjFac)</div><div class="ttdoc">Rotate a single qubit by +-{{0,-i},{i,0}.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02945">QuEST_cpu.c:2945</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a8d9c19a3424f0ad89bfbfd920d65301d"><div class="ttname"><a href="QuEST__cpu_8c.html#a8d9c19a3424f0ad89bfbfd920d65301d">densmatr_mixDampingDistributed</a></div><div class="ttdeci">void densmatr_mixDampingDistributed(Qureg qureg, int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00306">QuEST_cpu.c:306</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_aeb4453a2e609e5359d2995bccf6663ca"><div class="ttname"><a href="QuEST__cpu_8c.html#aeb4453a2e609e5359d2995bccf6663ca">densmatr_calcExpecDiagonalOpLocal</a></div><div class="ttdeci">Complex densmatr_calcExpecDiagonalOpLocal(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l04167">QuEST_cpu.c:4167</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_aa987d1e0ba97da2ca540194356dd62de"><div class="ttname"><a href="QuEST__cpu_8c.html#aa987d1e0ba97da2ca540194356dd62de">statevec_pauliXLocal</a></div><div class="ttdeci">void statevec_pauliXLocal(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02593">QuEST_cpu.c:2593</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a1b36518c8fbbc3a5084bb4ad1fb05ea5"><div class="ttname"><a href="QuEST__cpu_8c.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a></div><div class="ttdeci">void densmatr_initPureStateLocal(Qureg targetQureg, Qureg copyQureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01195">QuEST_cpu.c:1195</a></div></div>
<div class="ttc" id="aQuEST__gpu_8cu_html_aec1852e1a8e70d3690919ce8ab551ba0"><div class="ttname"><a href="QuEST__gpu_8cu.html#aec1852e1a8e70d3690919ce8ab551ba0">extractBit</a></div><div class="ttdeci">__forceinline__ __device__ int extractBit(const int locationOfBitFromRight, const long long int theEncodedNumber)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__gpu_8cu_source.html#l00082">QuEST_gpu.cu:82</a></div></div>
<div class="ttc" id="astructQuESTEnv_html_a66feaa60d3adc7dcf6f8b66514989356"><div class="ttname"><a href="structQuESTEnv.html#a66feaa60d3adc7dcf6f8b66514989356">QuESTEnv::seeds</a></div><div class="ttdeci">unsigned long int * seeds</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00366">QuEST.h:366</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab124a3a9956046bf9c0e1e3ae9171f42"><div class="ttname"><a href="QuEST__cpu_8c.html#ab124a3a9956046bf9c0e1e3ae9171f42">densmatr_mixDampingLocal</a></div><div class="ttdeci">void densmatr_mixDampingLocal(Qureg qureg, int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00180">QuEST_cpu.c:180</a></div></div>
<div class="ttc" id="astructQureg_html"><div class="ttname"><a href="structQureg.html">Qureg</a></div><div class="ttdoc">Represents a system of qubits.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00322">QuEST.h:322</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ac501fe7b9d331be48359ce1546348f97"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ac501fe7b9d331be48359ce1546348f97">densmatr_mixDamping</a></div><div class="ttdeci">void densmatr_mixDamping(Qureg qureg, int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00739">QuEST_cpu_distributed.c:739</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a08392b1b27d10e3b8a8648a5afeaa629"><div class="ttname"><a href="QuEST__cpu_8c.html#a08392b1b27d10e3b8a8648a5afeaa629">densmatr_calcInnerProductLocal</a></div><div class="ttdeci">qreal densmatr_calcInnerProductLocal(Qureg a, Qureg b)</div><div class="ttdoc">computes Tr(conjTrans(a) b) = sum of (a_ij^* b_ij)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00969">QuEST_cpu.c:969</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a28be36627b2dd9a0da63dd6f60121b06"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06">getChunkIdFromIndex</a></div><div class="ttdeci">static int getChunkIdFromIndex(Qureg qureg, long long int index)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00208">QuEST_cpu_distributed.c:208</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ae6f0c9ed9261afbab4712e056a88763d"><div class="ttname"><a href="QuEST__cpu_8c.html#ae6f0c9ed9261afbab4712e056a88763d">statevec_multiControlledMultiQubitNotDistributed</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitNotDistributed(Qureg qureg, int ctrlMask, int targMask, ComplexArray stateVecIn, ComplexArray stateVecOut)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02834">QuEST_cpu.c:2834</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a43afa97e300b87bce7f3eb1213eb05f6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a43afa97e300b87bce7f3eb1213eb05f6">densmatr_mixTwoQubitDepolarising</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarising(Qureg qureg, int qubit1, int qubit2, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00766">QuEST_cpu_distributed.c:766</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a0ce2c2fd54df25495e99dc5b95bed4b2"><div class="ttname"><a href="QuEST__cpu_8c.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a></div><div class="ttdeci">void statevec_unitaryDistributed(Qureg qureg, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Apply a unitary operation to a single qubit given a subset of the state vector with upper and lower b...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02151">QuEST_cpu.c:2151</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a071baf8b6951d2a7d6529394b6f39364"><div class="ttname"><a href="QuEST__cpu_8c.html#a071baf8b6951d2a7d6529394b6f39364">statevec_controlledCompactUnitaryDistributed</a></div><div class="ttdeci">void statevec_controlledCompactUnitaryDistributed(Qureg qureg, int controlQubit, Complex rot1, Complex rot2, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit in the state vector of probability amplitudes, given two complex numbers alpha ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02414">QuEST_cpu.c:2414</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ae5ad68d054875913d0f7ec654840a9ec"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ae5ad68d054875913d0f7ec654840a9ec">densmatr_initPureState</a></div><div class="ttdeci">void densmatr_initPureState(Qureg targetQureg, Qureg copyQureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00466">QuEST_cpu_distributed.c:466</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a076fe6125da4d6037b8bc4d912df4015"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015">densityMatrixBlockFitsInChunk</a></div><div class="ttdeci">static int densityMatrixBlockFitsInChunk(long long int chunkSize, int numQubits, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00377">QuEST_cpu_distributed.c:377</a></div></div>
<div class="ttc" id="aQuEST__precision_8h_html"><div class="ttname"><a href="QuEST__precision_8h.html">QuEST_precision.h</a></div></div>
<div class="ttc" id="astructQureg_html_a441e4cacef6bd17adb9813c7442d42fe"><div class="ttname"><a href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">Qureg::stateVec</a></div><div class="ttdeci">ComplexArray stateVec</div><div class="ttdoc">Computational state amplitudes - a subset thereof in the MPI version.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00341">QuEST.h:341</a></div></div>
<div class="ttc" id="astructComplexMatrix2_html_a3ea98d545b67a190ee6abe936c72076f"><div class="ttname"><a href="structComplexMatrix2.html#a3ea98d545b67a190ee6abe936c72076f">ComplexMatrix2::real</a></div><div class="ttdeci">qreal real[2][2]</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00139">QuEST.h:139</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aec63559e8b9ab0e17efe18d64d2ceca6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aec63559e8b9ab0e17efe18d64d2ceca6">statevec_compactUnitary</a></div><div class="ttdeci">void statevec_compactUnitary(Qureg qureg, int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00858">QuEST_cpu_distributed.c:858</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab750fb47da2fca9849c678c869e40e69"><div class="ttname"><a href="QuEST__cpu_8c.html#ab750fb47da2fca9849c678c869e40e69">densmatr_mixDepolarisingLocal</a></div><div class="ttdeci">void densmatr_mixDepolarisingLocal(Qureg qureg, int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00131">QuEST_cpu.c:131</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ad09bb76ad67581b03ab176832cca37cf"><div class="ttname"><a href="QuEST__cpu_8c.html#ad09bb76ad67581b03ab176832cca37cf">statevec_collapseToKnownProbOutcomeDistributedRenorm</a></div><div class="ttdeci">void statevec_collapseToKnownProbOutcomeDistributedRenorm(Qureg qureg, int measureQubit, qreal totalProbability)</div><div class="ttdoc">Renormalise parts of the state vector where measureQubit=0 or 1, based on the total probability of th...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03849">QuEST_cpu.c:3849</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a0acfe30083d0bc2a84da196378a36122"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a0acfe30083d0bc2a84da196378a36122">statevec_multiControlledMultiQubitUnitary</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitUnitary(Qureg qureg, long long int ctrlMask, int *targs, int numTargs, ComplexMatrixN u)</div><div class="ttdoc">This calls swapQubitAmps only when it would involve a distributed communication; if the qubit chunks ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01514">QuEST_cpu_distributed.c:1514</a></div></div>
<div class="ttc" id="astructDiagonalOp_html_a2c6eab631ef48b4978db026c98180eee"><div class="ttname"><a href="structDiagonalOp.html#a2c6eab631ef48b4978db026c98180eee">DiagonalOp::numElemsPerChunk</a></div><div class="ttdeci">long long int numElemsPerChunk</div><div class="ttdoc">The number of the 2^numQubits amplitudes stored on each distributed node.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00302">QuEST.h:302</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a4d043bb0cee54a5f94faf3ffc34a6790"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4d043bb0cee54a5f94faf3ffc34a6790">halfMatrixBlockFitsInChunk</a></div><div class="ttdeci">static int halfMatrixBlockFitsInChunk(long long int chunkSize, int targetQubit)</div><div class="ttdoc">return whether the current qubit rotation will use blocks that fit within a single chunk.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00370">QuEST_cpu_distributed.c:370</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a78cf98ea535790bc46069b60bae342c7"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a78cf98ea535790bc46069b60bae342c7">statevec_calcProbOfAllOutcomes</a></div><div class="ttdeci">void statevec_calcProbOfAllOutcomes(qreal *retProbs, Qureg qureg, int *qubits, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01340">QuEST_cpu_distributed.c:1340</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a86dbcc3db99294add9964741e19fbdab"><div class="ttname"><a href="QuEST__cpu_8c.html#a86dbcc3db99294add9964741e19fbdab">statevec_hadamardLocal</a></div><div class="ttdeci">void statevec_hadamardLocal(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03078">QuEST_cpu.c:3078</a></div></div>
<div class="ttc" id="agroup__debug_html_gaf8a14ae79c3fb2c0b5f6255cc37bebf9"><div class="ttname"><a href="group__debug.html#gaf8a14ae79c3fb2c0b5f6255cc37bebf9">reportQuESTEnv</a></div><div class="ttdeci">void reportQuESTEnv(QuESTEnv env)</div><div class="ttdoc">Report information about the QuEST environment.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00183">QuEST_cpu_distributed.c:183</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_afa58cf7cb98a25ab33621120c5c330d0"><div class="ttname"><a href="QuEST__cpu_8c.html#afa58cf7cb98a25ab33621120c5c330d0">densmatr_applyDiagonalOpLocal</a></div><div class="ttdeci">void densmatr_applyDiagonalOpLocal(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l04082">QuEST_cpu.c:4082</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a903beb4f5d8753a964ce2dc5f9096a24"><div class="ttname"><a href="QuEST__cpu_8c.html#a903beb4f5d8753a964ce2dc5f9096a24">statevec_controlledUnitaryLocal</a></div><div class="ttdeci">void statevec_controlledUnitaryLocal(Qureg qureg, int controlQubit, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02336">QuEST_cpu.c:2336</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aedd7ecccf2f09dd2f1c5d191950b51e6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aedd7ecccf2f09dd2f1c5d191950b51e6">densmatr_applyDiagonalOp</a></div><div class="ttdeci">void densmatr_applyDiagonalOp(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01594">QuEST_cpu_distributed.c:1594</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a4f243eb101c8e63f16cfd50300364cb7"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7">getGlobalIndOfOddParityInChunk</a></div><div class="ttdeci">long long int getGlobalIndOfOddParityInChunk(Qureg qureg, int qb1, int qb2)</div><div class="ttdoc">returns -1 if this node contains no amplitudes where qb1 and qb2 have opposite parity,...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01412">QuEST_cpu_distributed.c:1412</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ae90f82418e0aa67218d733dbbc681998"><div class="ttname"><a href="QuEST__cpu_8c.html#ae90f82418e0aa67218d733dbbc681998">densmatr_mixTwoQubitDepolarisingLocalPart1</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingLocalPart1(Qureg qureg, int qubit1, int qubit2, qreal delta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00494">QuEST_cpu.c:494</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aefba328e047e6ef4fd1ae4b56901aaa7"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aefba328e047e6ef4fd1ae4b56901aaa7">copyDiagOpIntoMatrixPairState</a></div><div class="ttdeci">void copyDiagOpIntoMatrixPairState(Qureg qureg, DiagonalOp op)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01559">QuEST_cpu_distributed.c:1559</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a393da4c4bc582a757ca8406d8501aca0"><div class="ttname"><a href="QuEST__cpu_8c.html#a393da4c4bc582a757ca8406d8501aca0">statevec_controlledNotDistributed</a></div><div class="ttdeci">void statevec_controlledNotDistributed(Qureg qureg, int controlQubit, ComplexArray stateVecIn, ComplexArray stateVecOut)</div><div class="ttdoc">Rotate a single qubit by {{0,1},{1,0}.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02742">QuEST_cpu.c:2742</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a1275d604674224d87a173fb5bac78835"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a1275d604674224d87a173fb5bac78835">statevec_controlledCompactUnitary</a></div><div class="ttdeci">void statevec_controlledCompactUnitary(Qureg qureg, int controlQubit, int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00934">QuEST_cpu_distributed.c:934</a></div></div>
<div class="ttc" id="astructQureg_html_ad08dff5316b8937f4b2a1417591543dc"><div class="ttname"><a href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">Qureg::numQubitsRepresented</a></div><div class="ttdeci">int numQubitsRepresented</div><div class="ttdoc">The number of qubits represented in either the state-vector or density matrix.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00327">QuEST.h:327</a></div></div>
<div class="ttc" id="aQuEST__validation_8h_html"><div class="ttname"><a href="QuEST__validation_8h.html">QuEST_validation.h</a></div></div>
<div class="ttc" id="agroup__debug_html_gac7e38d768a1bd79019f88cc1e6295092"><div class="ttname"><a href="group__debug.html#gac7e38d768a1bd79019f88cc1e6295092">syncQuESTSuccess</a></div><div class="ttdeci">int syncQuESTSuccess(int successCode)</div><div class="ttdoc">Performs a logical AND on all successCodes held by all processes.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00168">QuEST_cpu_distributed.c:168</a></div></div>
<div class="ttc" id="astructDiagonalOp_html_a1d66088bed235d524cd452b107694d5c"><div class="ttname"><a href="structDiagonalOp.html#a1d66088bed235d524cd452b107694d5c">DiagonalOp::real</a></div><div class="ttdeci">qreal * real</div><div class="ttdoc">The real values of the 2^numQubits complex elements.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00308">QuEST.h:308</a></div></div>
<div class="ttc" id="astructComplex_html_ab5b2e2eca02131fc74b289a83636cbe3"><div class="ttname"><a href="structComplex.html#ab5b2e2eca02131fc74b289a83636cbe3">Complex::real</a></div><div class="ttdeci">qreal real</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00105">QuEST.h:105</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_abe74a5a9db8340e37b80fbc77338894d"><div class="ttname"><a href="QuEST__cpu_8c.html#abe74a5a9db8340e37b80fbc77338894d">statevec_swapQubitAmpsDistributed</a></div><div class="ttdeci">void statevec_swapQubitAmpsDistributed(Qureg qureg, int pairRank, int qb1, int qb2)</div><div class="ttdoc">qureg.pairStateVec contains the entire set of amplitudes of the paired node which includes the set of...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03965">QuEST_cpu.c:3965</a></div></div>
<div class="ttc" id="astructComplex_html_a84f5439aad0ef495efdd3b4c1c02d27e"><div class="ttname"><a href="structComplex.html#a84f5439aad0ef495efdd3b4c1c02d27e">Complex::imag</a></div><div class="ttdeci">qreal imag</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00106">QuEST.h:106</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ab1ec7f241b68b079c8e316d190af49ce"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce">getChunkOuterBlockPairIdForPart3</a></div><div class="ttdeci">static int getChunkOuterBlockPairIdForPart3(int chunkIsUpperSmallerQubit, int chunkIsUpperBiggerQubit, int chunkId, long long int chunkSize, int smallerQubit, int biggerQubit, int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00339">QuEST_cpu_distributed.c:339</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a2f76ec8f08e19bb8e1254aafb10e160e"><div class="ttname"><a href="QuEST__cpu_8c.html#a2f76ec8f08e19bb8e1254aafb10e160e">densmatr_mixTwoQubitDepolarisingDistributed</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingDistributed(Qureg qureg, int targetQubit, int qubit2, qreal delta, qreal gamma)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00547">QuEST_cpu.c:547</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_aafc398f8f479fcc066a2dea700235635"><div class="ttname"><a href="QuEST__cpu_8c.html#aafc398f8f479fcc066a2dea700235635">statevec_unitaryLocal</a></div><div class="ttdeci">void statevec_unitaryLocal(Qureg qureg, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02026">QuEST_cpu.c:2026</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ad65ad1b5ea6f30b0c6b4ffda96e1a8e6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ad65ad1b5ea6f30b0c6b4ffda96e1a8e6">statevec_calcTotalProb</a></div><div class="ttdeci">qreal statevec_calcTotalProb(Qureg qureg)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00088">QuEST_cpu_distributed.c:88</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a8bea931504c90d9bd97e74645667804e"><div class="ttname"><a href="QuEST__cpu_8c.html#a8bea931504c90d9bd97e74645667804e">densmatr_findProbabilityOfZeroLocal</a></div><div class="ttdeci">qreal densmatr_findProbabilityOfZeroLocal(Qureg qureg, int measureQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03402">QuEST_cpu.c:3402</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aa3c2d644a2be7f0d3aa9f757527d306f"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f">chunkIsUpperInOuterBlock</a></div><div class="ttdeci">static int chunkIsUpperInOuterBlock(int chunkId, long long int chunkSize, int targetQubit, int numQubits)</div><div class="ttdoc">fix – do with masking instead</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00250">QuEST_cpu_distributed.c:250</a></div></div>
<div class="ttc" id="aQuEST__validation_8c_html_ad893327ebd2123508493d445868bfcd7"><div class="ttname"><a href="QuEST__validation_8c.html#ad893327ebd2123508493d445868bfcd7">validateNumRanks</a></div><div class="ttdeci">void validateNumRanks(int numRanks, const char *caller)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__validation_8c_source.html#l00335">QuEST_validation.c:335</a></div></div>
<div class="ttc" id="agroup__debug_html_ga555451c697ea4a9d27389155f68fdabc"><div class="ttname"><a href="group__debug.html#ga555451c697ea4a9d27389155f68fdabc">seedQuEST</a></div><div class="ttdeci">void seedQuEST(QuESTEnv *env, unsigned long int *seedArray, int numSeeds)</div><div class="ttdoc">Seeds the random number generator with a custom array of key(s), overriding the default keys.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01388">QuEST_cpu_distributed.c:1388</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a8c9da88f734b0862f4cce7d819e6d3b5"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a8c9da88f734b0862f4cce7d819e6d3b5">densmatr_calcHilbertSchmidtDistance</a></div><div class="ttdeci">qreal densmatr_calcHilbertSchmidtDistance(Qureg a, Qureg b)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00444">QuEST_cpu_distributed.c:444</a></div></div>
<div class="ttc" id="astructComplex_html"><div class="ttname"><a href="structComplex.html">Complex</a></div><div class="ttdoc">Represents one complex number.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00103">QuEST.h:103</a></div></div>
<div class="ttc" id="agroup__type_html_ga8ba2c3388dd64d9348c3b091852d36d4"><div class="ttname"><a href="group__type.html#ga8ba2c3388dd64d9348c3b091852d36d4">createQuESTEnv</a></div><div class="ttdeci">QuESTEnv createQuESTEnv(void)</div><div class="ttdoc">Create the QuEST execution environment.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00129">QuEST_cpu_distributed.c:129</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_abea6570b95fdfa102511ccd1fcb30685"><div class="ttname"><a href="QuEST__cpu_8c.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a></div><div class="ttdeci">void statevec_hadamardDistributed(Qureg qureg, ComplexArray stateVecUp, ComplexArray stateVecLo, ComplexArray stateVecOut, int updateUpper)</div><div class="ttdoc">Rotate a single qubit by {{1,1},{1,-1}}/sqrt2.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03139">QuEST_cpu.c:3139</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a13ecc24b355a5213d745651cde56bd71"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a13ecc24b355a5213d745651cde56bd71">statevec_multiControlledMultiQubitNot</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitNot(Qureg qureg, int ctrlMask, int targMask)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01097">QuEST_cpu_distributed.c:1097</a></div></div>
<div class="ttc" id="aQuEST__cpu__internal_8h_html_ae94d012c3da6c84599e99f6afea81f5f"><div class="ttname"><a href="QuEST__cpu__internal_8h.html#ae94d012c3da6c84599e99f6afea81f5f">maskContainsBit</a></div><div class="ttdeci">static int maskContainsBit(const long long int mask, const int bitInd)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__internal_8h_source.html#l00034">QuEST_cpu_internal.h:34</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_abc9a9ef4344c7faaaf28ac25c76649b9"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#abc9a9ef4344c7faaaf28ac25c76649b9">statevec_getRealAmp</a></div><div class="ttdeci">qreal statevec_getRealAmp(Qureg qureg, long long int index)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00212">QuEST_cpu_distributed.c:212</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_af1cca787f3b0e0c91ffb2495f9ad8d5a"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#af1cca787f3b0e0c91ffb2495f9ad8d5a">statevec_pauliY</a></div><div class="ttdeci">void statevec_pauliY(Qureg qureg, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01142">QuEST_cpu_distributed.c:1142</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_add9ca9956cdd81ed5d0b0f66168c04a3"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#add9ca9956cdd81ed5d0b0f66168c04a3">statevec_controlledUnitary</a></div><div class="ttdeci">void statevec_controlledUnitary(Qureg qureg, int controlQubit, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00972">QuEST_cpu_distributed.c:972</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a790add229738945812ae2048c03d58ec"><div class="ttname"><a href="QuEST__cpu_8c.html#a790add229738945812ae2048c03d58ec">statevec_controlledPauliYDistributed</a></div><div class="ttdeci">void statevec_controlledPauliYDistributed(Qureg qureg, int controlQubit, ComplexArray stateVecIn, ComplexArray stateVecOut, int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03036">QuEST_cpu.c:3036</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a215e2d6f88dbecc0b408b3573b5e144f"><div class="ttname"><a href="QuEST__cpu_8c.html#a215e2d6f88dbecc0b408b3573b5e144f">statevec_controlledCompactUnitaryLocal</a></div><div class="ttdeci">void statevec_controlledCompactUnitaryLocal(Qureg qureg, int controlQubit, int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02196">QuEST_cpu.c:2196</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a0552889d6f57d9e0ed8b209bf426482d"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a></div><div class="ttdeci">static int chunkIsUpper(int chunkId, long long int chunkSize, int targetQubit)</div><div class="ttdoc">Returns whether a given chunk in position chunkId is in the upper or lower half of a block.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00241">QuEST_cpu_distributed.c:241</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a4a2fa262d3f0dba372797b9bd35d9fa5"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4a2fa262d3f0dba372797b9bd35d9fa5">statevec_controlledPauliYConj</a></div><div class="ttdeci">void statevec_controlledPauliYConj(Qureg qureg, int controlQubit, int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01225">QuEST_cpu_distributed.c:1225</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a6fbb3b693f25dde1e9e3dc87dc1984f7"><div class="ttname"><a href="QuEST__cpu_8c.html#a6fbb3b693f25dde1e9e3dc87dc1984f7">statevec_calcInnerProductLocal</a></div><div class="ttdeci">Complex statevec_calcInnerProductLocal(Qureg bra, Qureg ket)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01082">QuEST_cpu.c:1082</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ab07dc84ee1f2034482f1c186576434be"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ab07dc84ee1f2034482f1c186576434be">statevec_collapseToKnownProbOutcome</a></div><div class="ttdeci">void statevec_collapseToKnownProbOutcome(Qureg qureg, int measureQubit, int outcome, qreal totalStateProb)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01368">QuEST_cpu_distributed.c:1368</a></div></div>
<div class="ttc" id="astructComplexMatrix2_html"><div class="ttname"><a href="structComplexMatrix2.html">ComplexMatrix2</a></div><div class="ttdoc">Represents a 2x2 matrix of complex numbers.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST_8h_source.html#l00137">QuEST.h:137</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ac3735bd959600e57b2ee3a105666cddf"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ac3735bd959600e57b2ee3a105666cddf">statevec_unitary</a></div><div class="ttdeci">void statevec_unitary(Qureg qureg, int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00895">QuEST_cpu_distributed.c:895</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a7772f97cb4d92a9825bf3b7c82c3230c"><div class="ttname"><a href="QuEST__cpu_8c.html#a7772f97cb4d92a9825bf3b7c82c3230c">densmatr_calcFidelityLocal</a></div><div class="ttdeci">qreal densmatr_calcFidelityLocal(Qureg qureg, Qureg pureState)</div><div class="ttdoc">computes a few dens-columns-worth of (vec^*T) dens * vec</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01001">QuEST_cpu.c:1001</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a8535bc15c2ff249ddddb3fde6eff1490"><div class="ttname"><a href="QuEST__cpu_8c.html#a8535bc15c2ff249ddddb3fde6eff1490">statevec_findProbabilityOfZeroLocal</a></div><div class="ttdeci">qreal statevec_findProbabilityOfZeroLocal(Qureg qureg, int measureQubit)</div><div class="ttdoc">Measure the total probability of a specified qubit being in the zero state across all amplitudes in t...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03457">QuEST_cpu.c:3457</a></div></div>
<!-- HTML footer for doxygen 1.8.8-->
<!-- start footer part -->
</div>
</div>
</div>
</div>
</div>
</body>
<script type="text/javascript" src="boot.js"></script>
</html>
