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<div class="title">QuEST_cpu_distributed.c</div> </div>
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<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>  <a class="code" href="group__debug.html#gaa8437ef3bf135231e2916e64dde1c94e">seedQuESTDefault</a>();</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> 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>  </div>
<div class="line"><a name="l00162"></a><span class="lineno"><a class="line" href="group__debug.html#ga8d31fe2d1ad4d01e2a1f5f6b8bc15b77"> 162</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="l00163"></a><span class="lineno"> 163</span>  MPI_Barrier(MPI_COMM_WORLD);</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="group__debug.html#gac7e38d768a1bd79019f88cc1e6295092"> 166</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="l00167"></a><span class="lineno"> 167</span>  <span class="keywordtype">int</span> totalSuccess;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  MPI_Allreduce(&successCode, &totalSuccess, 1, MPI_INT, MPI_LAND, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> totalSuccess;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
<div class="line"><a name="l00172"></a><span class="lineno"><a class="line" href="group__type.html#gaeff624226629d7063a8a776958a4f991"> 172</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="l00173"></a><span class="lineno"> 173</span>  <span class="keywordtype">int</span> finalized;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  MPI_Finalized(&finalized);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (!finalized) MPI_Finalize();</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</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="l00177"></a><span class="lineno"> 177</span> }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
<div class="line"><a name="l00179"></a><span class="lineno"><a class="line" href="group__debug.html#gaf8a14ae79c3fb2c0b5f6255cc37bebf9"> 179</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="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">if</span> (env.<a class="code" href="structQuESTEnv.html#aa648bb336cf8598467cb62db00b9cee8">rank</a>==0){</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  printf(<span class="stringliteral">"EXECUTION ENVIRONMENT:\n"</span>); </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  printf(<span class="stringliteral">"Running distributed (MPI) version\n"</span>);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</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="l00184"></a><span class="lineno"> 184</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  printf(<span class="stringliteral">"OpenMP enabled\n"</span>);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  printf(<span class="stringliteral">"Number of threads available is %d\n"</span>, omp_get_max_threads());</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="preprocessor"># else</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  printf(<span class="stringliteral">"OpenMP disabled\n"</span>);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="preprocessor"># endif </span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</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="l00191"></a><span class="lineno"> 191</span>  }</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> }</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  </div>
<div class="line"><a name="l00194"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a28be36627b2dd9a0da63dd6f60121b06"> 194</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="l00195"></a><span class="lineno"> 195</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="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="QuEST__cpu__distributed_8c.html#abc9a9ef4344c7faaaf28ac25c76649b9"> 198</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="l00199"></a><span class="lineno"> 199</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="l00200"></a><span class="lineno"> 200</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> el; </div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>==chunkId){</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</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="l00203"></a><span class="lineno"> 203</span>  }</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  MPI_Bcast(&el, 1, MPI_QuEST_REAL, chunkId, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">return</span> el; </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#abd509244d57657e148e4084c5ab5d28f"> 208</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="l00209"></a><span class="lineno"> 209</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="l00210"></a><span class="lineno"> 210</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> el; </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ac2929e681d3d95591c18cf168dbbe4f0">chunkId</a>==chunkId){</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</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="l00213"></a><span class="lineno"> 213</span>  }</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  MPI_Bcast(&el, 1, MPI_QuEST_REAL, chunkId, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">return</span> el; </div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> }</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</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="l00228"></a><span class="lineno"> 228</span> { </div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</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="l00230"></a><span class="lineno"> 230</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="l00231"></a><span class="lineno"> 231</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="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">return</span> posInBlock<sizeHalfBlock;</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  </div>
<div class="line"><a name="l00236"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aa3c2d644a2be7f0d3aa9f757527d306f"> 236</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="l00237"></a><span class="lineno"> 237</span> { </div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</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="l00239"></a><span class="lineno"> 239</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="l00240"></a><span class="lineno"> 240</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="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">return</span> posInBlock<sizeOuterHalfBlock;</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>  </div>
<div class="line"><a name="l00258"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872"> 258</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="l00259"></a><span class="lineno"> 259</span> {</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  *rot1=alpha;</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</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="l00263"></a><span class="lineno"> 263</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="l00264"></a><span class="lineno"> 264</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  *rot1=beta;</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  *rot2=alpha;</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  }</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> }</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  </div>
<div class="line"><a name="l00283"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17"> 283</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="l00284"></a><span class="lineno"> 284</span> {</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</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="l00287"></a><span class="lineno"> 287</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="l00288"></a><span class="lineno"> 288</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</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="l00290"></a><span class="lineno"> 290</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="l00291"></a><span class="lineno"> 291</span>  }</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> }</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  </div>
<div class="line"><a name="l00303"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a7dba097f23f5d48dfdc9f3250444e2e4"> 303</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="l00304"></a><span class="lineno"> 304</span> {</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</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="l00306"></a><span class="lineno"> 306</span>  <span class="keywordtype">int</span> chunksPerHalfBlock = sizeHalfBlock/chunkSize;</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">return</span> chunkId + chunksPerHalfBlock;</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">return</span> chunkId - chunksPerHalfBlock;</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  }</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> }</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  </div>
<div class="line"><a name="l00314"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae66dc6569c6e4008c33d6739db422c08"> 314</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="l00315"></a><span class="lineno"> 315</span> {</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</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="l00317"></a><span class="lineno"> 317</span>  <span class="keywordtype">int</span> chunksPerOuterHalfBlock = sizeOuterHalfBlock/chunkSize;</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__distributed_8c.html#a0552889d6f57d9e0ed8b209bf426482d">chunkIsUpper</a>){</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordflow">return</span> chunkId + chunksPerOuterHalfBlock;</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">return</span> chunkId - chunksPerOuterHalfBlock;</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  }</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> }</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  </div>
<div class="line"><a name="l00325"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce"> 325</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="l00326"></a><span class="lineno"> 326</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="l00327"></a><span class="lineno"> 327</span> {</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</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="l00329"></a><span class="lineno"> 329</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="l00330"></a><span class="lineno"> 330</span>  <span class="keywordtype">int</span> chunksPerOuterHalfBlockSmallerQubit = sizeOuterHalfBlockSmallerQubit/chunkSize;</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="keywordtype">int</span> chunksPerOuterHalfBlockBiggerQubit = sizeOuterHalfBlockBiggerQubit/chunkSize;</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordtype">int</span> rank;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">if</span> (chunkIsUpperBiggerQubit){</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  rank = chunkId + chunksPerOuterHalfBlockBiggerQubit;</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  rank = chunkId - chunksPerOuterHalfBlockBiggerQubit;</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"> 339</span>  <span class="keywordflow">if</span> (chunkIsUpperSmallerQubit){</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  rank = rank + chunksPerOuterHalfBlockSmallerQubit;</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  rank = rank - chunksPerOuterHalfBlockSmallerQubit;</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  }</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  </div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordflow">return</span> rank;</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> }</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  </div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</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="l00357"></a><span class="lineno"> 357</span> {</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</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="l00359"></a><span class="lineno"> 359</span>  <span class="keywordflow">if</span> (chunkSize > sizeHalfBlock) <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span> }</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  </div>
<div class="line"><a name="l00363"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a076fe6125da4d6037b8bc4d912df4015"> 363</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="l00364"></a><span class="lineno"> 364</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="l00365"></a><span class="lineno"> 365</span>  <span class="keywordflow">if</span> (chunkSize > sizeOuterHalfBlock) <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> }</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  </div>
<div class="line"><a name="l00371"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2"> 371</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="l00372"></a><span class="lineno"> 372</span>  </div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">// Remember that for every amplitude that `vec` stores on the node,</span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">// `matr` stores an entire column. Ergo there are always an integer</span></div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</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="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// Since the total size of `vec` (between all nodes) is one column</span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">// and each node stores (possibly) multiple columns (vec.numAmpsPerChunk as many), </span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</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="l00379"></a><span class="lineno"> 379</span>  </div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</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="l00381"></a><span class="lineno"> 381</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="l00382"></a><span class="lineno"> 382</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="l00383"></a><span class="lineno"> 383</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="l00384"></a><span class="lineno"> 384</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="l00385"></a><span class="lineno"> 385</span>  </div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</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="l00387"></a><span class="lineno"> 387</span>  <span class="comment">// vec is cloned in every node's matr.pairStateVec </span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  </div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">// work out how many messages needed to send vec chunks (2GB limit)</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</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="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span> (numLocalAmps < maxMsgSize) </div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  maxMsgSize = numLocalAmps;</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact:</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordtype">int</span> numMsgs = numLocalAmps / maxMsgSize;</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  </div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="comment">// every node gets a turn at being the broadcaster</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</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="l00398"></a><span class="lineno"> 398</span>  </div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</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="l00400"></a><span class="lineno"> 400</span>  </div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="comment">// every node sends a slice of qureg's pairState to every other</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i< numMsgs; i++) {</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="comment">// by sending that slice in further slices (due to bandwidth limit)</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  MPI_Bcast(</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  &matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[otherOffset + i*maxMsgSize], </div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  maxMsgSize, MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  MPI_Bcast(</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  &matr.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[otherOffset + i*maxMsgSize], </div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  maxMsgSize, MPI_QuEST_REAL, broadcaster, MPI_COMM_WORLD);</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  }</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> }</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  </div>
<div class="line"><a name="l00415"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aa6c3f86010ad398f42b0577ea3bb5bcf"> 415</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="l00416"></a><span class="lineno"> 416</span>  </div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="comment">// set qureg's pairState is to be the full pureState (on every node)</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a>(qureg, pureState);</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  </div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="comment">// collect calcFidelityLocal by every machine</span></div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</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="l00422"></a><span class="lineno"> 422</span>  </div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="comment">// sum each localSum</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  MPI_Allreduce(&localSum, &globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</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>  <span class="keywordflow">return</span> globalSum;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span> }</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  </div>
<div class="line"><a name="l00430"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a8c9da88f734b0862f4cce7d819e6d3b5"> 430</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="l00431"></a><span class="lineno"> 431</span>  </div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</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="l00433"></a><span class="lineno"> 433</span>  </div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  MPI_Allreduce(&localSum, &globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</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>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> dist = sqrt(globalSum);</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordflow">return</span> dist;</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> }</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  </div>
<div class="line"><a name="l00441"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a6ff3dc624b5fafe8edae4fe327c255a0"> 441</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="l00442"></a><span class="lineno"> 442</span>  </div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</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="l00444"></a><span class="lineno"> 444</span>  </div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalSum;</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  MPI_Allreduce(&localSum, &globalSum, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</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> dist = globalSum;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">return</span> dist;</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>  </div>
<div class="line"><a name="l00452"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae5ad68d054875913d0f7ec654840a9ec"> 452</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="l00453"></a><span class="lineno"> 453</span>  </div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">if</span> (targetQureg.<a class="code" href="structQureg.html#aa3deb7163aab90a61e755a1f200f5413">numChunks</a>==1){</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="comment">// local version</span></div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="comment">// save pointers to qureg's pair state</span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</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="l00458"></a><span class="lineno"> 458</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="l00459"></a><span class="lineno"> 459</span>  </div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="comment">// populate qureg pair state with pure state (by repointing)</span></div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</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="l00462"></a><span class="lineno"> 462</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="l00463"></a><span class="lineno"> 463</span>  </div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="comment">// populate density matrix via it's pairState</span></div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <a class="code" href="QuEST__cpu_8c.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a>(targetQureg, copyQureg);</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  </div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="comment">// restore pointers</span></div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real = quregPairRePtr;</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  targetQureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag = quregPairImPtr;</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</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="l00472"></a><span class="lineno"> 472</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a95af772d87c461fc8abfd6d47b752ac2">copyVecIntoMatrixPairState</a>(targetQureg, copyQureg);</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">// update every density matrix chunk using pairState</span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <a class="code" href="QuEST__cpu_8c.html#a1b36518c8fbbc3a5084bb4ad1fb05ea5">densmatr_initPureStateLocal</a>(targetQureg, copyQureg);</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  }</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>  </div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  </div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  </div>
<div class="line"><a name="l00481"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3"> 481</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="l00482"></a><span class="lineno"> 482</span>  <span class="comment">// MPI send/receive vars</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordtype">int</span> TAG=100;</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  MPI_Status status;</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  </div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</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="l00487"></a><span class="lineno"> 487</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="l00488"></a><span class="lineno"> 488</span>  <span class="comment">// to be safe</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</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="l00490"></a><span class="lineno"> 490</span>  <span class="keywordflow">if</span> (qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a> < maxMessageCount) </div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  maxMessageCount = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  </div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="keywordtype">int</span> numMessages = qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>/maxMessageCount;</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> offset;</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="comment">// send my state vector to pairRank's qureg.pairStateVec</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="comment">// receive pairRank's state vector into qureg.pairStateVec</span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="keywordflow">for</span> (i=0; i<numMessages; i++){</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  offset = i*maxMessageCount;</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</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="l00502"></a><span class="lineno"> 502</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  pairRank, TAG, MPI_COMM_WORLD, &status);</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="comment">//printf("rank: %d err: %d\n", qureg.rank, err);</span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</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="l00506"></a><span class="lineno"> 506</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  pairRank, TAG, MPI_COMM_WORLD, &status);</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  }</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> }</div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  </div>
<div class="line"><a name="l00511"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e"> 511</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="l00512"></a><span class="lineno"> 512</span>  <span class="comment">// MPI send/receive vars</span></div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="keywordtype">int</span> TAG=100;</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  MPI_Status status;</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</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="l00516"></a><span class="lineno"> 516</span>  </div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</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="l00518"></a><span class="lineno"> 518</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="l00519"></a><span class="lineno"> 519</span>  <span class="comment">// to be safe</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</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="l00521"></a><span class="lineno"> 521</span>  <span class="keywordflow">if</span> (numAmpsToSend < maxMessageCount) </div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  maxMessageCount = numAmpsToSend;</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  </div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="comment">// safely assume MPI_MAX... = 2^n, so division always exact</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keywordtype">int</span> numMessages = numAmpsToSend/maxMessageCount;</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keywordtype">int</span> i;</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> offset;</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</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="l00529"></a><span class="lineno"> 529</span>  <span class="comment">// receive pairRank's state vector into the top of qureg.pairStateVec</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="keywordflow">for</span> (i=0; i<numMessages; i++){</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  offset = i*maxMessageCount;</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  MPI_Sendrecv(&qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset+numAmpsToSend], maxMessageCount, </div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.real[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  pairRank, TAG, MPI_COMM_WORLD, &status);</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="comment">//printf("rank: %d err: %d\n", qureg.rank, err);</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  MPI_Sendrecv(&qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset+numAmpsToSend], maxMessageCount, </div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  MPI_QuEST_REAL, pairRank, TAG,</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  &qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>.imag[offset], maxMessageCount, MPI_QuEST_REAL,</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  pairRank, TAG, MPI_COMM_WORLD, &status);</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  }</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span> }</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  </div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</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="l00545"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a2ebf115d3bdd88f4b290b5218a5399d3"> 545</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a2ebf115d3bdd88f4b290b5218a5399d3">compressPairVectorForSingleQubitDepolarise</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit){</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeInnerBlock, sizeInnerHalfBlock;</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterColumn, sizeOuterHalfColumn;</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</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="l00549"></a><span class="lineno"> 549</span>  thisOuterColumn, <span class="comment">// current column in density matrix</span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  thisIndex, <span class="comment">// current index in (density matrix representation) state vector</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  thisIndexInOuterColumn,</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  thisIndexInInnerBlock;</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>  <span class="keywordtype">int</span> outerBit;</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="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> thisTask;</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="keyword">const</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="l00558"></a><span class="lineno"> 558</span>  </div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="comment">// set dimensions</span></div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  sizeInnerHalfBlock = 1LL << targetQubit;</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  sizeInnerBlock = 2LL * sizeInnerHalfBlock;</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  sizeOuterHalfColumn = 1LL << qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>;</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  sizeOuterColumn = 2LL * sizeOuterHalfColumn;</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  </div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span> <span class="preprocessor"> default (none) \</span></div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="preprocessor"> shared (sizeInnerBlock,sizeInnerHalfBlock,sizeOuterColumn,sizeOuterHalfColumn,qureg) \</span></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> <span class="preprocessor"> private (thisTask,thisInnerBlock,thisOuterColumn,thisIndex,thisIndexInOuterColumn, \</span></div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span> <span class="preprocessor"> thisIndexInInnerBlock,outerBit) </span></div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  {</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</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="l00577"></a><span class="lineno"> 577</span>  <span class="comment">// treat this as iterating over all columns, then iterating over half the values</span></div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="comment">// within one column.</span></div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <span class="comment">// If this function has been called, this process' chunk contains half an </span></div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <span class="comment">// outer block or less</span></div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keywordflow">for</span> (thisTask=0; thisTask<numTasks; thisTask++) {</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="comment">// we want to process all columns in the density matrix,</span></div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</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="l00584"></a><span class="lineno"> 584</span>  thisOuterColumn = thisTask / sizeOuterHalfColumn;</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  thisIndexInOuterColumn = thisTask&(sizeOuterHalfColumn-1); <span class="comment">// thisTask % sizeOuterHalfColumn</span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  thisInnerBlock = thisIndexInOuterColumn/sizeInnerHalfBlock;</div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="comment">// get index in state vector corresponding to upper inner block</span></div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  thisIndexInInnerBlock = thisTask&(sizeInnerHalfBlock-1); <span class="comment">// thisTask % sizeInnerHalfBlock</span></div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  thisIndex = thisOuterColumn*sizeOuterColumn + thisInnerBlock*sizeInnerBlock</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  + thisIndexInInnerBlock;</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</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="l00592"></a><span class="lineno"> 592</span>  outerBit = <a class="code" href="QuEST__gpu_8cu.html#a5cb8662afc6c644a46f7339c89bfd226">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="l00593"></a><span class="lineno"> 593</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="l00594"></a><span class="lineno"> 594</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="l00595"></a><span class="lineno"> 595</span>  thisIndex += outerBit*(sizeInnerHalfBlock);</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  </div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</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="l00598"></a><span class="lineno"> 598</span>  <span class="comment">// dephase in the chunk of the state vector on this process, in the </span></div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="comment">// density matrix representation. </span></div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <span class="comment">// thisTask is the index of the pair element in pairStateVec</span></div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="comment">// we will populate the second half of pairStateVec with this process'</span></div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <span class="comment">// data to send</span></div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  </div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</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="l00605"></a><span class="lineno"> 605</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="l00606"></a><span class="lineno"> 606</span>  </div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  }</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  }</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>  </div>
<div class="line"><a name="l00611"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a13a7c39357ba9a30339d7a6171aeda8d"> 611</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a13a7c39357ba9a30339d7a6171aeda8d">compressPairVectorForTwoQubitDepolarise</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit,</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> qubit2) {</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  </div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeInnerBlockQ1, sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</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="l00616"></a><span class="lineno"> 616</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> sizeOuterColumn, sizeOuterQuarterColumn;</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> </div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  thisInnerBlockQ2,</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  thisOuterColumn, <span class="comment">// current column in density matrix</span></div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  thisIndex, <span class="comment">// current index in (density matrix representation) state vector</span></div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  thisIndexInOuterColumn,</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  thisIndexInInnerBlockQ1,</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  thisIndexInInnerBlockQ2,</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  thisInnerBlockQ1InInnerBlockQ2;</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="keywordtype">int</span> outerBitQ1, outerBitQ2;</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> thisTask;</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <span class="keyword">const</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="l00629"></a><span class="lineno"> 629</span>  </div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="comment">// set dimensions</span></div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  sizeInnerHalfBlockQ1 = 1LL << targetQubit;</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  sizeInnerHalfBlockQ2 = 1LL << qubit2;</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  sizeInnerQuarterBlockQ2 = sizeInnerHalfBlockQ2 >> 1;</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  sizeInnerBlockQ2 = sizeInnerHalfBlockQ2 << 1;</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  sizeInnerBlockQ1 = 2LL * sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  sizeOuterColumn = 1LL << qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>;</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  sizeOuterQuarterColumn = sizeOuterColumn >> 2;</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  </div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span> <span class="preprocessor"># pragma omp parallel \</span></div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span> <span class="preprocessor"> default (none) \</span></div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span> <span class="preprocessor"> shared (sizeInnerBlockQ1,sizeInnerHalfBlockQ1,sizeInnerQuarterBlockQ2,sizeInnerHalfBlockQ2,sizeInnerBlockQ2, \</span></div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span> <span class="preprocessor"> sizeOuterColumn, \</span></div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span> <span class="preprocessor"> sizeOuterQuarterColumn,qureg) \</span></div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span> <span class="preprocessor"> private (thisTask,thisInnerBlockQ2,thisOuterColumn,thisIndex,thisIndexInOuterColumn, \</span></div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span> <span class="preprocessor"> thisIndexInInnerBlockQ1,thisIndexInInnerBlockQ2,thisInnerBlockQ1InInnerBlockQ2,outerBitQ1,outerBitQ2) </span></div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  {</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span> <span class="preprocessor"># ifdef _OPENMP</span></div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span> <span class="preprocessor"># pragma omp for schedule (static)</span></div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span> <span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</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="l00653"></a><span class="lineno"> 653</span>  <span class="comment">// treat this as iterating over all columns, then iterating over half the values</span></div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <span class="comment">// within one column.</span></div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <span class="comment">// If this function has been called, this process' chunk contains half an </span></div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  <span class="comment">// outer block or less</span></div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  <span class="keywordflow">for</span> (thisTask=0; thisTask<numTasks; thisTask++) {</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  <span class="comment">// we want to process all columns in the density matrix,</span></div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</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="l00660"></a><span class="lineno"> 660</span>  thisOuterColumn = thisTask / sizeOuterQuarterColumn;</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <span class="comment">// thisTask % sizeOuterQuarterColumn</span></div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  thisIndexInOuterColumn = thisTask&(sizeOuterQuarterColumn-1);</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  thisInnerBlockQ2 = thisIndexInOuterColumn / sizeInnerQuarterBlockQ2;</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="comment">// thisTask % sizeInnerQuarterBlockQ2;</span></div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  thisIndexInInnerBlockQ2 = thisTask&(sizeInnerQuarterBlockQ2-1);</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  thisInnerBlockQ1InInnerBlockQ2 = thisIndexInInnerBlockQ2 / sizeInnerHalfBlockQ1;</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="comment">// thisTask % sizeInnerHalfBlockQ1;</span></div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  thisIndexInInnerBlockQ1 = thisTask&(sizeInnerHalfBlockQ1-1);</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  </div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="comment">// get index in state vector corresponding to upper inner block</span></div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  thisIndex = thisOuterColumn*sizeOuterColumn + thisInnerBlockQ2*sizeInnerBlockQ2</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  + thisInnerBlockQ1InInnerBlockQ2*sizeInnerBlockQ1 + thisIndexInInnerBlockQ1;</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  </div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</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="l00675"></a><span class="lineno"> 675</span>  outerBitQ1 = <a class="code" href="QuEST__gpu_8cu.html#a5cb8662afc6c644a46f7339c89bfd226">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="l00676"></a><span class="lineno"> 676</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="l00677"></a><span class="lineno"> 677</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="l00678"></a><span class="lineno"> 678</span>  thisIndex += outerBitQ1*(sizeInnerHalfBlockQ1);</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  </div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</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="l00681"></a><span class="lineno"> 681</span>  outerBitQ2 = <a class="code" href="QuEST__gpu_8cu.html#a5cb8662afc6c644a46f7339c89bfd226">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="l00682"></a><span class="lineno"> 682</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="l00683"></a><span class="lineno"> 683</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="l00684"></a><span class="lineno"> 684</span>  thisIndex += outerBitQ2*(sizeInnerQuarterBlockQ2<<1);</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">// NOTE: at this point thisIndex should be the index of the element we want to </span></div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  <span class="comment">// dephase in the chunk of the state vector on this process, in the </span></div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="comment">// density matrix representation. </span></div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <span class="comment">// thisTask is the index of the pair element in pairStateVec</span></div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  </div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="comment">// state[thisIndex] = (1-depolLevel)*state[thisIndex] + depolLevel*(state[thisIndex]</span></div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <span class="comment">// + pair[thisTask])/2</span></div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</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="l00694"></a><span class="lineno"> 694</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="l00695"></a><span class="lineno"> 695</span>  }</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  }</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>  </div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  </div>
<div class="line"><a name="l00700"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a3765e92c79d4c2a0df6761a0e7da2676"> 700</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a3765e92c79d4c2a0df6761a0e7da2676">densmatr_mixDepolarising</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> depolLevel) {</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="keywordflow">if</span> (depolLevel == 0)</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  </div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</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="l00705"></a><span class="lineno"> 705</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  </div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</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="l00708"></a><span class="lineno"> 708</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, targetQubit);</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>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <a class="code" href="QuEST__cpu_8c.html#a1807899a1c39506427433739562670ec">densmatr_mixDepolarisingLocal</a>(qureg, targetQubit, depolLevel);</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</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="l00714"></a><span class="lineno"> 714</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a2ebf115d3bdd88f4b290b5218a5399d3">compressPairVectorForSingleQubitDepolarise</a>(qureg, targetQubit);</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>  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="l00717"></a><span class="lineno"> 717</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</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="l00719"></a><span class="lineno"> 719</span>  targetQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  </div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <a class="code" href="QuEST__cpu_8c.html#acc485aea8dccf1678f80fa9c5df6724a">densmatr_mixDepolarisingDistributed</a>(qureg, targetQubit, depolLevel);</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  }</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  </div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span> }</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  </div>
<div class="line"><a name="l00727"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a72b26b971531dbdc64de20501f368545"> 727</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a72b26b971531dbdc64de20501f368545">densmatr_mixDamping</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit, <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> damping) {</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  <span class="keywordflow">if</span> (damping == 0)</div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  </div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</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="l00732"></a><span class="lineno"> 732</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  </div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</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="l00735"></a><span class="lineno"> 735</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, targetQubit);</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>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <a class="code" href="QuEST__cpu_8c.html#a7cc805451304b8ad4429c7107f90ab3b">densmatr_mixDampingLocal</a>(qureg, targetQubit, damping);</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</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="l00741"></a><span class="lineno"> 741</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a2ebf115d3bdd88f4b290b5218a5399d3">compressPairVectorForSingleQubitDepolarise</a>(qureg, targetQubit);</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>  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="l00744"></a><span class="lineno"> 744</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</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="l00746"></a><span class="lineno"> 746</span>  targetQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  </div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <a class="code" href="QuEST__cpu_8c.html#a28d2a35fde2952211f5898a76275d93d">densmatr_mixDampingDistributed</a>(qureg, targetQubit, damping);</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  }</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  </div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span> }</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  </div>
<div class="line"><a name="l00754"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a43afa97e300b87bce7f3eb1213eb05f6"> 754</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="l00755"></a><span class="lineno"> 755</span>  <span class="keywordflow">if</span> (depolLevel == 0)</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <span class="keywordtype">int</span> rankIsUpperBiggerQubit, rankIsUpperSmallerQubit;</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="keywordtype">int</span> biggerQubit, smallerQubit;</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  </div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <a class="code" href="QuEST__internal_8h.html#a5090b080392ab9be8fcf538161d4e5c1">densmatr_mixTwoQubitDephasing</a>(qureg, qubit1, qubit2, depolLevel);</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>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> eta = 2/depolLevel;</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</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="l00765"></a><span class="lineno"> 765</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> gamma = 1+delta;</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  gamma = 1/(gamma*gamma*gamma);</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="keyword">const</span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> GAMMA_PARTS_1_OR_2 = 1.0;</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="comment">// TODO -- test delta too small</span></div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="comment">/* </span></div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span> <span class="comment"> if (fabs(4*delta*(1+delta)*gamma-depolLevel)>1e-5){</span></div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span> <span class="comment"> printf("Numerical error in delta; for small error rates try Taylor expansion.\n");</span></div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span> <span class="comment"> exit(1);</span></div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  </div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  biggerQubit = qubit1 > qubit2 ? qubit1 : qubit2;</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  smallerQubit = qubit1 < qubit2 ? qubit1 : qubit2;</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <span class="keywordtype">int</span> useLocalDataOnlyBigQubit, useLocalDataOnlySmallQubit;</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  </div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</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="l00781"></a><span class="lineno"> 781</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, biggerQubit);</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <span class="keywordflow">if</span> (useLocalDataOnlyBigQubit){</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="comment">// does parts 1, 2 and 3 locally in one go</span></div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <a class="code" href="QuEST__cpu_8c.html#a3510f01d4d15dcc545564eb84c668cad">densmatr_mixTwoQubitDepolarisingLocal</a>(qureg, qubit1, qubit2, delta, gamma);</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</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="l00787"></a><span class="lineno"> 787</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>, smallerQubit);</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="keywordflow">if</span> (useLocalDataOnlySmallQubit){</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="comment">// do part 1 locally</span></div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <a class="code" href="QuEST__cpu_8c.html#ae90f82418e0aa67218d733dbbc681998">densmatr_mixTwoQubitDepolarisingLocalPart1</a>(qureg, smallerQubit, biggerQubit, delta);</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>  <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="l00793"></a><span class="lineno"> 793</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="l00794"></a><span class="lineno"> 794</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a13a7c39357ba9a30339d7a6171aeda8d">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</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="l00796"></a><span class="lineno"> 796</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</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="l00798"></a><span class="lineno"> 798</span>  biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  </div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <a class="code" href="QuEST__cpu_8c.html#ac497197e66d7024fc6bf7ace120b3de5">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  </div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <span class="comment">// part 3 will be distributed but involve rearranging for the smaller qubit</span></div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a13a7c39357ba9a30339d7a6171aeda8d">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</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="l00806"></a><span class="lineno"> 806</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</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="l00808"></a><span class="lineno"> 808</span>  biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  </div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  <a class="code" href="QuEST__cpu_8c.html#af82f6c9317f51a2048ddd3eb24c2959c">densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3</a>(qureg, smallerQubit, biggerQubit, delta, gamma);</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  <span class="comment">// do part 1, 2 and 3 distributed</span></div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  <span class="comment">// part 1</span></div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a13a7c39357ba9a30339d7a6171aeda8d">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</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="l00817"></a><span class="lineno"> 817</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</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="l00819"></a><span class="lineno"> 819</span>  smallerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  </div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <a class="code" href="QuEST__cpu_8c.html#ac497197e66d7024fc6bf7ace120b3de5">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  </div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  <span class="comment">// part 2</span></div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a13a7c39357ba9a30339d7a6171aeda8d">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</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="l00827"></a><span class="lineno"> 827</span>  qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</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="l00829"></a><span class="lineno"> 829</span>  biggerQubit, qureg.<a class="code" href="structQureg.html#ad08dff5316b8937f4b2a1417591543dc">numQubitsRepresented</a>);</div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  </div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <a class="code" href="QuEST__cpu_8c.html#ac497197e66d7024fc6bf7ace120b3de5">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, GAMMA_PARTS_1_OR_2);</div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  </div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <span class="comment">// part 3</span></div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a13a7c39357ba9a30339d7a6171aeda8d">compressPairVectorForTwoQubitDepolarise</a>(qureg, smallerQubit, biggerQubit);</div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  pairRank = <a class="code" href="QuEST__cpu__distributed_8c.html#ab1ec7f241b68b079c8e316d190af49ce">getChunkOuterBlockPairIdForPart3</a>(rankIsUpperSmallerQubit, rankIsUpperBiggerQubit, </div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</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="l00838"></a><span class="lineno"> 838</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a37dae401754961c9100b3c0907913c3e">exchangePairStateVectorHalves</a>(qureg, pairRank);</div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  <a class="code" href="QuEST__cpu_8c.html#ac497197e66d7024fc6bf7ace120b3de5">densmatr_mixTwoQubitDepolarisingDistributed</a>(qureg, smallerQubit, biggerQubit, delta, gamma);</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  </div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  }</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>  </div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span> }</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  </div>
<div class="line"><a name="l00846"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a94ee4df9faba286ad7a5bc829ef5174d"> 846</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a94ee4df9faba286ad7a5bc829ef5174d">statevec_compactUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <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="l00847"></a><span class="lineno"> 847</span> {</div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</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="l00849"></a><span class="lineno"> 849</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="l00850"></a><span class="lineno"> 850</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  </div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</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>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <a class="code" href="QuEST__cpu_8c.html#aa5865e66a6e0993ae17d400c9ee0eb43">statevec_compactUnitaryLocal</a>(qureg, targetQubit, alpha, beta);</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</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="l00862"></a><span class="lineno"> 862</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(rankIsUpper, &rot1, &rot2, alpha, beta);</div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</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="l00864"></a><span class="lineno"> 864</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  </div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</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="l00868"></a><span class="lineno"> 868</span>  <span class="comment">// send values to compactUnitaryDistributed in the correct order</span></div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  <a class="code" href="QuEST__cpu_8c.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <a class="code" href="QuEST__cpu_8c.html#a0a7a35628b1c1eb47336deb9afda5b68">statevec_compactUnitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  }</div>
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  }</div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span> }</div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  </div>
<div class="line"><a name="l00883"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a4bea7ed7967083cbabd8a8e5acdd48c0"> 883</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a4bea7ed7967083cbabd8a8e5acdd48c0">statevec_unitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span> {</div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</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="l00886"></a><span class="lineno"> 886</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="l00887"></a><span class="lineno"> 887</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  </div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</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>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <a class="code" href="QuEST__cpu_8c.html#a9f62ff38deae8ef012024d416d749c00">statevec_unitaryLocal</a>(qureg, targetQubit, u);</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</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="l00899"></a><span class="lineno"> 899</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &rot1, &rot2, u);</div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</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="l00901"></a><span class="lineno"> 901</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  </div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</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="l00905"></a><span class="lineno"> 905</span>  <span class="comment">// send values to compactUnitaryDistributed in the correct order</span></div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  <a class="code" href="QuEST__cpu_8c.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  <a class="code" href="QuEST__cpu_8c.html#a0ce2c2fd54df25495e99dc5b95bed4b2">statevec_unitaryDistributed</a>(qureg,rot1,rot2,</div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  }</div>
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  }</div>
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  </div>
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  </div>
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span> }</div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  </div>
<div class="line"><a name="l00922"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a47b467a5445c7f15d1a8b0b2ec0ef2de"> 922</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a47b467a5445c7f15d1a8b0b2ec0ef2de">statevec_controlledCompactUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> controlQubit, <span class="keyword">const</span> <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="l00923"></a><span class="lineno"> 923</span> {</div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</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="l00925"></a><span class="lineno"> 925</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="l00926"></a><span class="lineno"> 926</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  </div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</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>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  <a class="code" href="QuEST__cpu_8c.html#a0e5527c6e144fab8062ea5296e8bdf2a">statevec_controlledCompactUnitaryLocal</a>(qureg, controlQubit, targetQubit, alpha, beta);</div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</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="l00938"></a><span class="lineno"> 938</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#adb4b0373425b282abed27742d0ce0872">getRotAngle</a>(rankIsUpper, &rot1, &rot2, alpha, beta);</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</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="l00940"></a><span class="lineno"> 940</span>  <span class="comment">//printf("%d rank has pair rank: %d\n", qureg.rank, pairRank);</span></div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</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="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="l00945"></a><span class="lineno"> 945</span>  <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  <a class="code" href="QuEST__cpu_8c.html#a230eea38971f36de8f5437b1f47aaf3e">statevec_controlledCompactUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  <a class="code" href="QuEST__cpu_8c.html#a230eea38971f36de8f5437b1f47aaf3e">statevec_controlledCompactUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  }</div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  }</div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span> }</div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  </div>
<div class="line"><a name="l00960"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a2600999a19c817bfcf7ca14779e33b9a"> 960</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a2600999a19c817bfcf7ca14779e33b9a">statevec_controlledUnitary</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> controlQubit, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit, </div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span> {</div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</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="l00964"></a><span class="lineno"> 964</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="l00965"></a><span class="lineno"> 965</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  </div>
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</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>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  <a class="code" href="QuEST__cpu_8c.html#ac0c120ac374b402c576c4b38bcda9992">statevec_controlledUnitaryLocal</a>(qureg, controlQubit, targetQubit, u);</div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</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="l00977"></a><span class="lineno"> 977</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &rot1, &rot2, u);</div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</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="l00979"></a><span class="lineno"> 979</span>  <span class="comment">//printf("%d rank has pair rank: %d\n", qureg.rank, pairRank);</span></div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</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="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="l00984"></a><span class="lineno"> 984</span>  <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  <a class="code" href="QuEST__cpu_8c.html#ab14681cbcc8f530333a9570328886b32">statevec_controlledUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <a class="code" href="QuEST__cpu_8c.html#ab14681cbcc8f530333a9570328886b32">statevec_controlledUnitaryDistributed</a>(qureg,controlQubit,rot1,rot2,</div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  }</div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  }</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span> }</div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  </div>
<div class="line"><a name="l00999"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a7ec46b4b96cda399095a2488ceff69b6"> 999</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a7ec46b4b96cda399095a2488ceff69b6">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="keyword">const</span> <span class="keywordtype">int</span> targetQubit, <a class="code" href="structComplexMatrix2.html">ComplexMatrix2</a> u)</div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span> {</div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</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="l01002"></a><span class="lineno"> 1002</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="l01003"></a><span class="lineno"> 1003</span>  <a class="code" href="structComplex.html">Complex</a> rot1, rot2;</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  </div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</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>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  <a class="code" href="QuEST__cpu_8c.html#ae757d3b816aa7ba7bea13334a9b77441">statevec_multiControlledUnitaryLocal</a>(qureg, targetQubit, ctrlQubitsMask, ctrlFlipMask, u);</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</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="l01015"></a><span class="lineno"> 1015</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#a5c9b2f129bdffaaba9857f6eddecbb17">getRotAngleFromUnitaryMatrix</a>(rankIsUpper, &rot1, &rot2, u);</div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</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="l01017"></a><span class="lineno"> 1017</span>  </div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</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="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="l01022"></a><span class="lineno"> 1022</span>  <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  <a class="code" href="QuEST__cpu_8c.html#a623e5479f5dd45e87fe2acef55620771">statevec_multiControlledUnitaryDistributed</a>(qureg,targetQubit,ctrlQubitsMask,ctrlFlipMask,rot1,rot2,</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  <a class="code" href="QuEST__cpu_8c.html#a623e5479f5dd45e87fe2acef55620771">statevec_multiControlledUnitaryDistributed</a>(qureg,targetQubit,ctrlQubitsMask,ctrlFlipMask,rot1,rot2,</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//output</span></div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  }</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  }</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span> }</div>
<div class="line"><a name="l01036"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#abdb6e0ee1e407755e1b944086cedd90e"> 1036</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#abdb6e0ee1e407755e1b944086cedd90e">statevec_pauliX</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span> {</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</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="l01039"></a><span class="lineno"> 1039</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="l01040"></a><span class="lineno"> 1040</span>  </div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  </div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  <a class="code" href="QuEST__cpu_8c.html#a842aaecd6d6cdc194c0b7c84623d2111">statevec_pauliXLocal</a>(qureg, targetQubit);</div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</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="l01051"></a><span class="lineno"> 1051</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="l01052"></a><span class="lineno"> 1052</span>  <span class="comment">//printf("%d rank has pair rank: %d\n", qureg.rank, pairRank);</span></div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</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="l01056"></a><span class="lineno"> 1056</span>  <span class="comment">// this rank's values with pair values</span></div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  <a class="code" href="QuEST__cpu_8c.html#a464efbd1d7ca5a7b25c83ada001955c2">statevec_pauliXDistributed</a>(qureg,</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">// out</span></div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  }</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span> }</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  </div>
<div class="line"><a name="l01063"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a114038296eb404b9b8a66aaad7b48800"> 1063</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a114038296eb404b9b8a66aaad7b48800">statevec_controlledNot</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> controlQubit, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span> {</div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</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="l01066"></a><span class="lineno"> 1066</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="l01067"></a><span class="lineno"> 1067</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="l01068"></a><span class="lineno"> 1068</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  </div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <a class="code" href="QuEST__cpu_8c.html#a11c9685e4ad1f44cfd6243e0c4435893">statevec_controlledNotLocal</a>(qureg, controlQubit, targetQubit);</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</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="l01076"></a><span class="lineno"> 1076</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="l01077"></a><span class="lineno"> 1077</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</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="l01080"></a><span class="lineno"> 1080</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  <a class="code" href="QuEST__cpu_8c.html#a97f17a0969e16f9ce9b55abd46bd732a">statevec_controlledNotDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//out</span></div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  <a class="code" href="QuEST__cpu_8c.html#a97f17a0969e16f9ce9b55abd46bd732a">statevec_controlledNotDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>); <span class="comment">//out</span></div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  }</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  }</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span> }</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  </div>
<div class="line"><a name="l01092"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a73b56fbac6e464a37805fa9d9657a8f9"> 1092</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a73b56fbac6e464a37805fa9d9657a8f9">statevec_pauliY</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span> { </div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  <span class="keywordtype">int</span> conjFac = 1;</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>  <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="l01097"></a><span class="lineno"> 1097</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="l01098"></a><span class="lineno"> 1098</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="l01099"></a><span class="lineno"> 1099</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  </div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  <a class="code" href="QuEST__cpu_8c.html#a8edf5f2066b05fb343931f45e2bec8f8">statevec_pauliYLocal</a>(qureg, targetQubit, conjFac);</div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</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="l01106"></a><span class="lineno"> 1106</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="l01107"></a><span class="lineno"> 1107</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</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="l01110"></a><span class="lineno"> 1110</span>  <a class="code" href="QuEST__cpu_8c.html#a3528cf8d741807987d8150d59ccb1ba3">statevec_pauliYDistributed</a>(qureg,</div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">// out</span></div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  rankIsUpper, conjFac);</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  }</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span> }</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  </div>
<div class="line"><a name="l01117"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#aee97816cfabeea7874cd837a8d105412"> 1117</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#aee97816cfabeea7874cd837a8d105412">statevec_pauliYConj</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span> { </div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  <span class="keywordtype">int</span> conjFac = -1;</div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  </div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</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="l01122"></a><span class="lineno"> 1122</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="l01123"></a><span class="lineno"> 1123</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="l01124"></a><span class="lineno"> 1124</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>  </div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  <a class="code" href="QuEST__cpu_8c.html#a8edf5f2066b05fb343931f45e2bec8f8">statevec_pauliYLocal</a>(qureg, targetQubit, conjFac);</div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</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="l01131"></a><span class="lineno"> 1131</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="l01132"></a><span class="lineno"> 1132</span>  <span class="comment">// get corresponding values from my pair</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">// this rank's values are either in the upper of lower half of the block</span></div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <a class="code" href="QuEST__cpu_8c.html#a3528cf8d741807987d8150d59ccb1ba3">statevec_pauliYDistributed</a>(qureg,</div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">// in</span></div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">// out</span></div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  rankIsUpper, conjFac);</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#a708246b16236c492094c2633da0c08ff"> 1142</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a708246b16236c492094c2633da0c08ff">statevec_controlledPauliY</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> controlQubit, <span class="keyword">const</span> <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>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  <a class="code" href="QuEST__cpu_8c.html#a9028deac63419d71d523f73229a7bd84">statevec_controlledPauliYLocal</a>(qureg, controlQubit, targetQubit, conjFac);</div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</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="l01157"></a><span class="lineno"> 1157</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="l01158"></a><span class="lineno"> 1158</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</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="l01161"></a><span class="lineno"> 1161</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <a class="code" href="QuEST__cpu_8c.html#a3ad35691d74b79e759c0fc53862c68b5">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  <a class="code" href="QuEST__cpu_8c.html#a3ad35691d74b79e759c0fc53862c68b5">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  -conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  }</div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  }</div>
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span> }</div>
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  </div>
<div class="line"><a name="l01175"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a9e647339720bf82b30c6331fad544ec5"> 1175</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a9e647339720bf82b30c6331fad544ec5">statevec_controlledPauliYConj</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> controlQubit, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span> {</div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  <span class="keywordtype">int</span> conjFac = -1;</div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  </div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</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="l01180"></a><span class="lineno"> 1180</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="l01181"></a><span class="lineno"> 1181</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="l01182"></a><span class="lineno"> 1182</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  </div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  <a class="code" href="QuEST__cpu_8c.html#a9028deac63419d71d523f73229a7bd84">statevec_controlledPauliYLocal</a>(qureg, controlQubit, targetQubit, conjFac);</div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</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="l01190"></a><span class="lineno"> 1190</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="l01191"></a><span class="lineno"> 1191</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</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="l01194"></a><span class="lineno"> 1194</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  <a class="code" href="QuEST__cpu_8c.html#a3ad35691d74b79e759c0fc53862c68b5">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  <a class="code" href="QuEST__cpu_8c.html#a3ad35691d74b79e759c0fc53862c68b5">statevec_controlledPauliYDistributed</a>(qureg,controlQubit,</div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//in</span></div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>,</div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  -conjFac); <span class="comment">//out</span></div>
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  }</div>
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  }</div>
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span> }</div>
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  </div>
<div class="line"><a name="l01208"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a9226f386d010aaa85efc0e8889d341d5"> 1208</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a9226f386d010aaa85efc0e8889d341d5">statevec_hadamard</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> targetQubit)</div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span> {</div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</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="l01211"></a><span class="lineno"> 1211</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="l01212"></a><span class="lineno"> 1212</span>  </div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  <span class="comment">// rank's chunk is in upper half of block </span></div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  <span class="keywordtype">int</span> rankIsUpper;</div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  <span class="keywordtype">int</span> pairRank; <span class="comment">// rank of corresponding chunk</span></div>
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  </div>
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  <span class="keywordflow">if</span> (useLocalDataOnly){</div>
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  <span class="comment">// all values required to update state vector lie in this rank</span></div>
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  <a class="code" href="QuEST__cpu_8c.html#a24f9ade18290c82bbb2c4a706b3d5999">statevec_hadamardLocal</a>(qureg, targetQubit);</div>
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  <span class="comment">// need to get corresponding chunk of state vector from other rank</span></div>
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</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="l01223"></a><span class="lineno"> 1223</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="l01224"></a><span class="lineno"> 1224</span>  <span class="comment">//printf("%d rank has pair rank: %d\n", qureg.rank, pairRank);</span></div>
<div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  <span class="comment">// get corresponding values from my pair</span></div>
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</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="l01228"></a><span class="lineno"> 1228</span>  <span class="comment">// in the correct order</span></div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  <span class="keywordflow">if</span> (rankIsUpper){</div>
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  <a class="code" href="QuEST__cpu_8c.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a>(qureg,</div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, rankIsUpper); <span class="comment">//output</span></div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  <a class="code" href="QuEST__cpu_8c.html#abea6570b95fdfa102511ccd1fcb30685">statevec_hadamardDistributed</a>(qureg,</div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  qureg.<a class="code" href="structQureg.html#aba97773694870ef35e378c036f486bb7">pairStateVec</a>, <span class="comment">//upper</span></div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, <span class="comment">//lower</span></div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  qureg.<a class="code" href="structQureg.html#a441e4cacef6bd17adb9813c7442d42fe">stateVec</a>, rankIsUpper); <span class="comment">//output</span></div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  }</div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  }</div>
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span> }</div>
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  </div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  </div>
<div class="line"><a name="l01254"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#af0ea25f00987af4c53f17c9cca62ab41"> 1254</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="l01255"></a><span class="lineno"> 1255</span> {</div>
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</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="l01257"></a><span class="lineno"> 1257</span>  <span class="keywordtype">int</span> numChunksToSkip = sizeHalfBlock/chunkSize;</div>
<div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>  <span class="comment">// calculate probability by summing over numChunksToSkip, then skipping numChunksToSkip, etc</span></div>
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  <span class="keywordtype">int</span> bitToCheck = chunkId & numChunksToSkip;</div>
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  <span class="keywordflow">return</span> bitToCheck;</div>
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span> }</div>
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  </div>
<div class="line"><a name="l01263"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ab33cdf01831c4545e51299178acf7f27"> 1263</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#ab33cdf01831c4545e51299178acf7f27">statevec_calcProbOfOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> measureQubit, <span class="keywordtype">int</span> outcome)</div>
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span> {</div>
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> stateProb=0, totalStateProb=0;</div>
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</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="l01267"></a><span class="lineno"> 1267</span>  <span class="keywordflow">if</span> (skipValuesWithinRank) {</div>
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  stateProb = <a class="code" href="QuEST__cpu_8c.html#afa06d0143cea46f1e425c61ac6f6f9a2">statevec_findProbabilityOfZeroLocal</a>(qureg, measureQubit);</div>
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</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="l01271"></a><span class="lineno"> 1271</span>  stateProb = <a class="code" href="QuEST__cpu_8c.html#a430d98e35f1eae7f0815ac539057cf67">statevec_findProbabilityOfZeroDistributed</a>(qureg);</div>
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  } <span class="keywordflow">else</span> stateProb = 0;</div>
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>  }</div>
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  MPI_Allreduce(&stateProb, &totalStateProb, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  <span class="keywordflow">if</span> (outcome==1) totalStateProb = 1.0 - totalStateProb;</div>
<div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  <span class="keywordflow">return</span> totalStateProb;</div>
<div class="line"><a name="l01277"></a><span class="lineno"> 1277</span> }</div>
<div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  </div>
<div class="line"><a name="l01279"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#ad405e3fac20997043e0236b751e44270"> 1279</a></span> <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> <a class="code" href="QuEST__cpu__distributed_8c.html#ad405e3fac20997043e0236b751e44270">densmatr_calcProbOfOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <span class="keywordtype">int</span> measureQubit, <span class="keywordtype">int</span> outcome) {</div>
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>  </div>
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> zeroProb = <a class="code" href="QuEST__cpu_8c.html#a101e7ef38c5d654a697dafe14562dcee">densmatr_findProbabilityOfZeroLocal</a>(qureg, measureQubit);</div>
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  </div>
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> outcomeProb;</div>
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  MPI_Allreduce(&zeroProb, &outcomeProb, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  <span class="keywordflow">if</span> (outcome == 1)</div>
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  outcomeProb = 1.0 - outcomeProb;</div>
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>  </div>
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  <span class="keywordflow">return</span> outcomeProb;</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"><a class="line" href="QuEST__cpu__distributed_8c.html#ae45eefa65f4ecd37bab84fade7cf7f1f"> 1291</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="l01292"></a><span class="lineno"> 1292</span>  </div>
<div class="line"><a name="l01293"></a><span class="lineno"> 1293</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="l01294"></a><span class="lineno"> 1294</span>  </div>
<div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>  <a class="code" href="group__type.html#ga7740e349b4f8bae6451547680f0ce2d6">qreal</a> globalPurity;</div>
<div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>  MPI_Allreduce(&localPurity, &globalPurity, 1, MPI_QuEST_REAL, MPI_SUM, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>  </div>
<div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>  <span class="keywordflow">return</span> globalPurity;</div>
<div class="line"><a name="l01299"></a><span class="lineno"> 1299</span> }</div>
<div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  </div>
<div class="line"><a name="l01301"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a331b41393c22820e621628bb5e60a8b2"> 1301</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a331b41393c22820e621628bb5e60a8b2">statevec_collapseToKnownProbOutcome</a>(<a class="code" href="structQureg.html">Qureg</a> qureg, <span class="keyword">const</span> <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="l01302"></a><span class="lineno"> 1302</span> {</div>
<div class="line"><a name="l01303"></a><span class="lineno"> 1303</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="l01304"></a><span class="lineno"> 1304</span>  <span class="keywordflow">if</span> (skipValuesWithinRank) {</div>
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  <a class="code" href="QuEST__cpu_8c.html#ab02bce0ebbb8f624e8ced8b09b99cdef">statevec_collapseToKnownProbOutcomeLocal</a>(qureg, measureQubit, outcome, totalStateProb);</div>
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01307"></a><span class="lineno"> 1307</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="l01308"></a><span class="lineno"> 1308</span>  <span class="comment">// chunk has amps for q=0</span></div>
<div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>  <span class="keywordflow">if</span> (outcome==0) <a class="code" href="QuEST__cpu_8c.html#acd82c94cfac89eacb901348ff0d06af8">statevec_collapseToKnownProbOutcomeDistributedRenorm</a>(qureg, measureQubit, </div>
<div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>  totalStateProb);</div>
<div class="line"><a name="l01311"></a><span class="lineno"> 1311</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="l01312"></a><span class="lineno"> 1312</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>  <span class="comment">// chunk has amps for q=1</span></div>
<div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  <span class="keywordflow">if</span> (outcome==1) <a class="code" href="QuEST__cpu_8c.html#acd82c94cfac89eacb901348ff0d06af8">statevec_collapseToKnownProbOutcomeDistributedRenorm</a>(qureg, measureQubit, </div>
<div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>  totalStateProb);</div>
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</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="l01317"></a><span class="lineno"> 1317</span>  }</div>
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>  }</div>
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span> }</div>
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  </div>
<div class="line"><a name="l01321"></a><span class="lineno"><a class="line" href="group__debug.html#gaa8437ef3bf135231e2916e64dde1c94e"> 1321</a></span> <span class="keywordtype">void</span> <a class="code" href="group__debug.html#gaa8437ef3bf135231e2916e64dde1c94e">seedQuESTDefault</a>(){</div>
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  <span class="comment">// init MT random number generator with three keys -- time and pid</span></div>
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  <span class="comment">// for the MPI version, it is ok that all procs will get the same seed as random numbers will only be </span></div>
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  <span class="comment">// used by the master process</span></div>
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  </div>
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> key[2];</div>
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  <a class="code" href="QuEST__common_8c.html#a2b323b65cd6512720e6aa27c182fcea0">getQuESTDefaultSeedKey</a>(key);</div>
<div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>  <span class="comment">// this seed will be used to generate the same random number on all procs,</span></div>
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  <span class="comment">// therefore we want to make sure all procs receive the same key</span></div>
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  MPI_Bcast(key, 2, MPI_UNSIGNED_LONG, 0, MPI_COMM_WORLD);</div>
<div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  <a class="code" href="mt19937ar_8c.html#ac1283f9b1ed571332f5ffe53545ffc16">init_by_array</a>(key, 2);</div>
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span> }</div>
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  </div>
<div class="line"><a name="l01338"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a4f243eb101c8e63f16cfd50300364cb7"> 1338</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="l01339"></a><span class="lineno"> 1339</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="l01340"></a><span class="lineno"> 1340</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="l01341"></a><span class="lineno"> 1341</span>  <span class="keywordtype">long</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> oddParityInd;</div>
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  </div>
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__gpu_8cu.html#a5cb8662afc6c644a46f7339c89bfd226">extractBit</a>(qb1, chunkStartInd) != <a class="code" href="QuEST__gpu_8cu.html#a5cb8662afc6c644a46f7339c89bfd226">extractBit</a>(qb2, chunkStartInd))</div>
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  <span class="keywordflow">return</span> chunkStartInd;</div>
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  </div>
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  oddParityInd = <a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(chunkStartInd, qb1);</div>
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  <span class="keywordflow">if</span> (oddParityInd >= chunkStartInd && oddParityInd < chunkEndInd)</div>
<div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  <span class="keywordflow">return</span> oddParityInd;</div>
<div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  </div>
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  oddParityInd = <a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(chunkStartInd, qb2);</div>
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  <span class="keywordflow">if</span> (oddParityInd >= chunkStartInd && oddParityInd < chunkEndInd)</div>
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  <span class="keywordflow">return</span> oddParityInd;</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="keywordflow">return</span> -1;</div>
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span> }</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#ab7478fcaf6357ab202d72853b672e375"> 1358</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="l01359"></a><span class="lineno"> 1359</span>  </div>
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  <span class="comment">// perform locally if possible </span></div>
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>  <span class="keywordtype">int</span> qbBig = (qb1 > qb2)? qb1 : qb2;</div>
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</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="l01363"></a><span class="lineno"> 1363</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="l01364"></a><span class="lineno"> 1364</span>  </div>
<div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  <span class="comment">// do nothing if this node contains no amplitudes to swap</span></div>
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</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="l01367"></a><span class="lineno"> 1367</span>  <span class="keywordflow">if</span> (oddParityGlobalInd == -1)</div>
<div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  <span class="keywordflow">return</span>;</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="comment">// determine and swap amps with pair node</span></div>
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  <span class="keywordtype">int</span> pairRank = <a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(oddParityGlobalInd, qb1), qb2) / qureg.<a class="code" href="structQureg.html#ab0ea0358482b62f43fdd781469607d97">numAmpsPerChunk</a>;</div>
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ae01c3eb75fd32de1a7e1dbc7a33a21e3">exchangeStateVectors</a>(qureg, pairRank);</div>
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  <a class="code" href="QuEST__cpu_8c.html#abe74a5a9db8340e37b80fbc77338894d">statevec_swapQubitAmpsDistributed</a>(qureg, pairRank, qb1, qb2);</div>
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span> }</div>
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  </div>
<div class="line"><a name="l01385"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a49af21aad0ad254c64a10cb6d39e4a64"> 1385</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a49af21aad0ad254c64a10cb6d39e4a64">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="keyword">const</span> <span class="keywordtype">int</span> q1, <span class="keyword">const</span> <span class="keywordtype">int</span> q2, <a class="code" href="structComplexMatrix4.html">ComplexMatrix4</a> u) {</div>
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</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="l01387"></a><span class="lineno"> 1387</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="l01388"></a><span class="lineno"> 1388</span>  </div>
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  <span class="keywordflow">if</span> (q1FitsInNode && q2FitsInNode) { </div>
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  <a class="code" href="QuEST__cpu_8c.html#aa7f5f0bf7fa945d46eb51e79e00a8dfd">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, q1, q2, u);</div>
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  </div>
<div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (q1FitsInNode) {</div>
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  <span class="keywordtype">int</span> qSwap = (q1 > 0)? q1-1 : q1+1;</div>
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  </div>
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>  <span class="comment">// ensure ctrl == qSwap, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#a216d03e71c5a0a48089aee3401df4298">maskContainsBit</a>(ctrlMask, qSwap))</div>
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(ctrlMask, q2), qSwap);</div>
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  </div>
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, qSwap);</div>
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  <a class="code" href="QuEST__cpu_8c.html#aa7f5f0bf7fa945d46eb51e79e00a8dfd">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, q1, qSwap, u);</div>
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, qSwap);</div>
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  </div>
<div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (q2FitsInNode) {</div>
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  <span class="keywordtype">int</span> qSwap = (q2 > 0)? q2-1 : q2+1;</div>
<div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  </div>
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>  <span class="comment">// ensure ctrl == qSwap, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#a216d03e71c5a0a48089aee3401df4298">maskContainsBit</a>(ctrlMask, qSwap))</div>
<div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(ctrlMask, q1), qSwap);</div>
<div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>  </div>
<div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, qSwap);</div>
<div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  <a class="code" href="QuEST__cpu_8c.html#aa7f5f0bf7fa945d46eb51e79e00a8dfd">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, qSwap, q2, u);</div>
<div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, qSwap);</div>
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>  </div>
<div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>  <span class="comment">// we know with certainty that both q1 and q2 >= 2</span></div>
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  <span class="keywordtype">int</span> swap1 = 0;</div>
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  <span class="keywordtype">int</span> swap2 = 1;</div>
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  </div>
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  <span class="comment">// if ctrl == swap1 or swap2, ensure ctrlMask updates under the swap</span></div>
<div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#a216d03e71c5a0a48089aee3401df4298">maskContainsBit</a>(ctrlMask, swap1))</div>
<div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(ctrlMask, swap1), q1);</div>
<div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#a216d03e71c5a0a48089aee3401df4298">maskContainsBit</a>(ctrlMask, swap2))</div>
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(ctrlMask, swap2), q2);</div>
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  </div>
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, swap1);</div>
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, swap2);</div>
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>  <a class="code" href="QuEST__cpu_8c.html#aa7f5f0bf7fa945d46eb51e79e00a8dfd">statevec_multiControlledTwoQubitUnitaryLocal</a>(qureg, ctrlMask, swap1, swap2, u);</div>
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q1, swap1);</div>
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  <a class="code" href="QuEST__cpu__distributed_8c.html#ab7478fcaf6357ab202d72853b672e375">statevec_swapQubitAmps</a>(qureg, q2, swap2);</div>
<div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  }</div>
<div class="line"><a name="l01431"></a><span class="lineno"> 1431</span> }</div>
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  </div>
<div class="line"><a name="l01441"></a><span class="lineno"><a class="line" href="QuEST__cpu__distributed_8c.html#a47dcab9a0e6b07ddde264ed924add26c"> 1441</a></span> <span class="keywordtype">void</span> <a class="code" href="QuEST__cpu__distributed_8c.html#a47dcab9a0e6b07ddde264ed924add26c">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="keyword">const</span> <span class="keywordtype">int</span> numTargs, <a class="code" href="structComplexMatrixN.html">ComplexMatrixN</a> u) {</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">// bit mask of target qubits (for quick collision checking)</span></div>
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</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#abd1285091450c7c2806cc26c71eb5df2">getQubitBitMask</a>(targs, numTargs);</div>
<div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  </div>
<div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  <span class="comment">// find lowest qubit available for swapping (isn't in targs)</span></div>
<div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>  <span class="keywordtype">int</span> freeQb=0;</div>
<div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  <span class="keywordflow">while</span> (<a class="code" href="QuEST__cpu__internal_8h.html#a216d03e71c5a0a48089aee3401df4298">maskContainsBit</a>(targMask, freeQb))</div>
<div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>  freeQb++;</div>
<div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>  </div>
<div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>  <span class="comment">// assign indices of where each target will be swapped to (else itself)</span></div>
<div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>  <span class="keywordtype">int</span> swapTargs[numTargs];</div>
<div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t<numTargs; t++) {</div>
<div class="line"><a name="l01454"></a><span class="lineno"> 1454</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="l01455"></a><span class="lineno"> 1455</span>  swapTargs[t] = targs[t];</div>
<div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>  <span class="comment">// mark swap</span></div>
<div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>  swapTargs[t] = freeQb;</div>
<div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>  </div>
<div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>  <span class="comment">// update ctrlMask if swapped-out qubit was a control</span></div>
<div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>  <span class="keywordflow">if</span> (<a class="code" href="QuEST__cpu__internal_8h.html#a216d03e71c5a0a48089aee3401df4298">maskContainsBit</a>(ctrlMask, swapTargs[t]))</div>
<div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  ctrlMask = <a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(<a class="code" href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a>(ctrlMask, swapTargs[t]), targs[t]); <span class="comment">// swap targ and ctrl</span></div>
<div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>  </div>
<div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>  <span class="comment">// locate next available on-chunk qubit</span></div>
<div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  freeQb++;</div>
<div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  <span class="keywordflow">while</span> (<a class="code" href="QuEST__cpu__internal_8h.html#a216d03e71c5a0a48089aee3401df4298">maskContainsBit</a>(targMask, freeQb))</div>
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  freeQb++;</div>
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  }</div>
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  }</div>
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>  </div>
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  <span class="comment">// perform swaps as necessary </span></div>
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t<numTargs; t++)</div>
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  <span class="keywordflow">if</span> (swapTargs[t] != targs[t])</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, targs[t], swapTargs[t]);</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="comment">// all target qubits have now been swapped into local memory</span></div>
<div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  <a class="code" href="QuEST__cpu_8c.html#acc5726bc7f899d5fd85454ffcc64f60c">statevec_multiControlledMultiQubitUnitaryLocal</a>(qureg, ctrlMask, swapTargs, numTargs, u);</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">// undo swaps </span></div>
<div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t=0; t<numTargs; t++)</div>
<div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>  <span class="keywordflow">if</span> (swapTargs[t] != targs[t])</div>
<div class="line"><a name="l01482"></a><span class="lineno"> 1482</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="l01483"></a><span class="lineno"> 1483</span> }</div>
</div><!-- fragment --></div><!-- contents -->
<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#l00172">QuEST_cpu_distributed.c:172</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_abdb6e0ee1e407755e1b944086cedd90e"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#abdb6e0ee1e407755e1b944086cedd90e">statevec_pauliX</a></div><div class="ttdeci">void statevec_pauliX(Qureg qureg, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01036">QuEST_cpu_distributed.c:1036</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#l00208">QuEST_cpu_distributed.c:208</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#l00162">QuEST_cpu_distributed.c:162</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a2ebf115d3bdd88f4b290b5218a5399d3"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a2ebf115d3bdd88f4b290b5218a5399d3">compressPairVectorForSingleQubitDepolarise</a></div><div class="ttdeci">void compressPairVectorForSingleQubitDepolarise(Qureg qureg, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00545">QuEST_cpu_distributed.c:545</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a24f9ade18290c82bbb2c4a706b3d5999"><div class="ttname"><a href="QuEST__cpu_8c.html#a24f9ade18290c82bbb2c4a706b3d5999">statevec_hadamardLocal</a></div><div class="ttdeci">void statevec_hadamardLocal(Qureg qureg, const int targetQubit)</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_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#l00258">QuEST_cpu_distributed.c:258</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#l00441">QuEST_cpu_distributed.c:441</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#l00922">QuEST_cpu.c:922</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a9e647339720bf82b30c6331fad544ec5"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a9e647339720bf82b30c6331fad544ec5">statevec_controlledPauliYConj</a></div><div class="ttdeci">void statevec_controlledPauliYConj(Qureg qureg, const int controlQubit, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01175">QuEST_cpu_distributed.c:1175</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ac497197e66d7024fc6bf7ace120b3de5"><div class="ttname"><a href="QuEST__cpu_8c.html#ac497197e66d7024fc6bf7ace120b3de5">densmatr_mixTwoQubitDepolarisingDistributed</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingDistributed(Qureg qureg, const int targetQubit, const int qubit2, qreal delta, qreal gamma)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00540">QuEST_cpu.c:540</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#l00201">QuEST.h:201</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a97f17a0969e16f9ce9b55abd46bd732a"><div class="ttname"><a href="QuEST__cpu_8c.html#a97f17a0969e16f9ce9b55abd46bd732a">statevec_controlledNotDistributed</a></div><div class="ttdeci">void statevec_controlledNotDistributed(Qureg qureg, const 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#l02612">QuEST_cpu.c:2612</a></div></div>
<div class="ttc" id="aQuEST__cpu__internal_8h_html_a216d03e71c5a0a48089aee3401df4298"><div class="ttname"><a href="QuEST__cpu__internal_8h.html#a216d03e71c5a0a48089aee3401df4298">maskContainsBit</a></div><div class="ttdeci">static int maskContainsBit(long long int mask, 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_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#l01254">QuEST_cpu_distributed.c:1254</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#l00181">QuEST.h:181</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#l03222">QuEST_cpu.c:3222</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_aa7f5f0bf7fa945d46eb51e79e00a8dfd"><div class="ttname"><a href="QuEST__cpu_8c.html#aa7f5f0bf7fa945d46eb51e79e00a8dfd">statevec_multiControlledTwoQubitUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledTwoQubitUnitaryLocal(Qureg qureg, long long int ctrlMask, const int q1, const int q2, ComplexMatrix4 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01715">QuEST_cpu.c:1715</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_af82f6c9317f51a2048ddd3eb24c2959c"><div class="ttname"><a href="QuEST__cpu_8c.html#af82f6c9317f51a2048ddd3eb24c2959c">densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3</a></div><div class="ttdeci">void densmatr_mixTwoQubitDepolarisingQ1LocalQ2DistributedPart3(Qureg qureg, const int targetQubit, const int qubit2, qreal delta, qreal gamma)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00631">QuEST_cpu.c:631</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a47b467a5445c7f15d1a8b0b2ec0ef2de"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a47b467a5445c7f15d1a8b0b2ec0ef2de">statevec_controlledCompactUnitary</a></div><div class="ttdeci">void statevec_controlledCompactUnitary(Qureg qureg, const int controlQubit, const int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00922">QuEST_cpu_distributed.c:922</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#l00176">QuEST.h:176</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#l00415">QuEST_cpu_distributed.c:415</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#l03496">QuEST_cpu.c:3496</a></div></div>
<div class="ttc" id="aQuEST__common_8c_html_a2b323b65cd6512720e6aa27c182fcea0"><div class="ttname"><a href="QuEST__common_8c.html#a2b323b65cd6512720e6aa27c182fcea0">getQuESTDefaultSeedKey</a></div><div class="ttdeci">void getQuESTDefaultSeedKey(unsigned long int *key)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__common_8c_source.html#l00181">QuEST_common.c:181</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#l03340">QuEST_cpu.c:3340</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a72b26b971531dbdc64de20501f368545"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a72b26b971531dbdc64de20501f368545">densmatr_mixDamping</a></div><div class="ttdeci">void densmatr_mixDamping(Qureg qureg, const int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00727">QuEST_cpu_distributed.c:727</a></div></div>
<div class="ttc" id="aQuEST__gpu_8cu_html_a5cb8662afc6c644a46f7339c89bfd226"><div class="ttname"><a href="QuEST__gpu_8cu.html#a5cb8662afc6c644a46f7339c89bfd226">extractBit</a></div><div class="ttdeci">__forceinline__ __device__ int extractBit(int locationOfBitFromRight, 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="aQuEST__cpu_8c_html_afa06d0143cea46f1e425c61ac6f6f9a2"><div class="ttname"><a href="QuEST__cpu_8c.html#afa06d0143cea46f1e425c61ac6f6f9a2">statevec_findProbabilityOfZeroLocal</a></div><div class="ttdeci">qreal statevec_findProbabilityOfZeroLocal(Qureg qureg, const 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#l03166">QuEST_cpu.c:3166</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#l00860">QuEST_cpu.c:860</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a708246b16236c492094c2633da0c08ff"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a708246b16236c492094c2633da0c08ff">statevec_controlledPauliY</a></div><div class="ttdeci">void statevec_controlledPauliY(Qureg qureg, const int controlQubit, const 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="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#l00125">QuEST.h:125</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#l00199">QuEST.h:199</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#l00136">QuEST.h:136</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#l02522">QuEST_cpu.c:2522</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#l00314">QuEST_cpu_distributed.c:314</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_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#l00371">QuEST_cpu_distributed.c:371</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_a4bea7ed7967083cbabd8a8e5acdd48c0"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a4bea7ed7967083cbabd8a8e5acdd48c0">statevec_unitary</a></div><div class="ttdeci">void statevec_unitary(Qureg qureg, const int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00883">QuEST_cpu_distributed.c:883</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#l00511">QuEST_cpu_distributed.c:511</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_aee97816cfabeea7874cd837a8d105412"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#aee97816cfabeea7874cd837a8d105412">statevec_pauliYConj</a></div><div class="ttdeci">void statevec_pauliYConj(Qureg qureg, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01117">QuEST_cpu_distributed.c:1117</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#l01358">QuEST_cpu_distributed.c:1358</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a13a7c39357ba9a30339d7a6171aeda8d"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a13a7c39357ba9a30339d7a6171aeda8d">compressPairVectorForTwoQubitDepolarise</a></div><div class="ttdeci">void compressPairVectorForTwoQubitDepolarise(Qureg qureg, const int targetQubit, const int qubit2)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00611">QuEST_cpu_distributed.c:611</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a11c9685e4ad1f44cfd6243e0c4435893"><div class="ttname"><a href="QuEST__cpu_8c.html#a11c9685e4ad1f44cfd6243e0c4435893">statevec_controlledNotLocal</a></div><div class="ttdeci">void statevec_controlledNotLocal(Qureg qureg, const int controlQubit, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02550">QuEST_cpu.c:2550</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#l00303">QuEST_cpu_distributed.c:303</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a47dcab9a0e6b07ddde264ed924add26c"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a47dcab9a0e6b07ddde264ed924add26c">statevec_multiControlledMultiQubitUnitary</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitUnitary(Qureg qureg, long long int ctrlMask, int *targs, const 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#l01441">QuEST_cpu_distributed.c:1441</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#l01291">QuEST_cpu_distributed.c:1291</a></div></div>
<div class="ttc" id="aQuEST__common_8c_html_abd1285091450c7c2806cc26c71eb5df2"><div class="ttname"><a href="QuEST__common_8c.html#abd1285091450c7c2806cc26c71eb5df2">getQubitBitMask</a></div><div class="ttdeci">long long int getQubitBitMask(int *qubits, const int numQubits)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__common_8c_source.html#l00043">QuEST_common.c:43</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="ttdoc">Set all amplitudes in one chunk to 0.</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03461">QuEST_cpu.c:3461</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#l00174">QuEST.h:174</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a7cc805451304b8ad4429c7107f90ab3b"><div class="ttname"><a href="QuEST__cpu_8c.html#a7cc805451304b8ad4429c7107f90ab3b">densmatr_mixDampingLocal</a></div><div class="ttdeci">void densmatr_mixDampingLocal(Qureg qureg, const int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00174">QuEST_cpu.c:174</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#l00117">QuEST.h:117</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ae757d3b816aa7ba7bea13334a9b77441"><div class="ttname"><a href="QuEST__cpu_8c.html#ae757d3b816aa7ba7bea13334a9b77441">statevec_multiControlledUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledUnitaryLocal(Qureg qureg, const 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#l02140">QuEST_cpu.c:2140</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="aQuEST__cpu_8c_html_a0e5527c6e144fab8062ea5296e8bdf2a"><div class="ttname"><a href="QuEST__cpu_8c.html#a0e5527c6e144fab8062ea5296e8bdf2a">statevec_controlledCompactUnitaryLocal</a></div><div class="ttdeci">void statevec_controlledCompactUnitaryLocal(Qureg qureg, const int controlQubit, const int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02069">QuEST_cpu.c:2069</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#l00170">QuEST.h:170</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#l00385">QuEST_cpu.c:385</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#l00283">QuEST_cpu_distributed.c:283</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_acc485aea8dccf1678f80fa9c5df6724a"><div class="ttname"><a href="QuEST__cpu_8c.html#acc485aea8dccf1678f80fa9c5df6724a">densmatr_mixDepolarisingDistributed</a></div><div class="ttdeci">void densmatr_mixDepolarisingDistributed(Qureg qureg, const int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00224">QuEST_cpu.c:224</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ab14681cbcc8f530333a9570328886b32"><div class="ttname"><a href="QuEST__cpu_8c.html#ab14681cbcc8f530333a9570328886b32">statevec_controlledUnitaryDistributed</a></div><div class="ttdeci">void statevec_controlledUnitaryDistributed(Qureg qureg, const 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#l02347">QuEST_cpu.c:2347</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#l00202">QuEST.h:202</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#l01969">QuEST_cpu.c:1969</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_aa5865e66a6e0993ae17d400c9ee0eb43"><div class="ttname"><a href="QuEST__cpu_8c.html#aa5865e66a6e0993ae17d400c9ee0eb43">statevec_compactUnitaryLocal</a></div><div class="ttdeci">void statevec_compactUnitaryLocal(Qureg qureg, const int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01656">QuEST_cpu.c:1656</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a101e7ef38c5d654a697dafe14562dcee"><div class="ttname"><a href="QuEST__cpu_8c.html#a101e7ef38c5d654a697dafe14562dcee">densmatr_findProbabilityOfZeroLocal</a></div><div class="ttdeci">qreal densmatr_findProbabilityOfZeroLocal(Qureg qureg, const int measureQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l03111">QuEST_cpu.c:3111</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_a3765e92c79d4c2a0df6761a0e7da2676"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a3765e92c79d4c2a0df6761a0e7da2676">densmatr_mixDepolarising</a></div><div class="ttdeci">void densmatr_mixDepolarising(Qureg qureg, const int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00700">QuEST_cpu_distributed.c:700</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#l00481">QuEST_cpu_distributed.c:481</a></div></div>
<div class="ttc" id="aQuEST__internal_8h_html_a5090b080392ab9be8fcf538161d4e5c1"><div class="ttname"><a href="QuEST__internal_8h.html#a5090b080392ab9be8fcf538161d4e5c1">densmatr_mixTwoQubitDephasing</a></div><div class="ttdeci">void densmatr_mixTwoQubitDephasing(Qureg qureg, const int qubit1, const int qubit2, qreal dephase)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00084">QuEST_cpu.c:84</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a114038296eb404b9b8a66aaad7b48800"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a114038296eb404b9b8a66aaad7b48800">statevec_controlledNot</a></div><div class="ttdeci">void statevec_controlledNot(Qureg qureg, const int controlQubit, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01063">QuEST_cpu_distributed.c:1063</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a2600999a19c817bfcf7ca14779e33b9a"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a2600999a19c817bfcf7ca14779e33b9a">statevec_controlledUnitary</a></div><div class="ttdeci">void statevec_controlledUnitary(Qureg qureg, const int controlQubit, const int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00960">QuEST_cpu_distributed.c:960</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#l01183">QuEST_cpu.c:1183</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a331b41393c22820e621628bb5e60a8b2"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a331b41393c22820e621628bb5e60a8b2">statevec_collapseToKnownProbOutcome</a></div><div class="ttdeci">void statevec_collapseToKnownProbOutcome(Qureg qureg, const int measureQubit, int outcome, qreal totalStateProb)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01301">QuEST_cpu_distributed.c:1301</a></div></div>
<div class="ttc" id="aQuEST__gpu_8cu_html_a6aea6cf9c06d05a5765ad01311531627"><div class="ttname"><a href="QuEST__gpu_8cu.html#a6aea6cf9c06d05a5765ad01311531627">flipBit</a></div><div class="ttdeci">__forceinline__ __device__ long long int flipBit(long long int number, 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_8c_html_acd82c94cfac89eacb901348ff0d06af8"><div class="ttname"><a href="QuEST__cpu_8c.html#acd82c94cfac89eacb901348ff0d06af8">statevec_collapseToKnownProbOutcomeDistributedRenorm</a></div><div class="ttdeci">void statevec_collapseToKnownProbOutcomeDistributedRenorm(Qureg qureg, const int measureQubit, const 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#l03422">QuEST_cpu.c:3422</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a1807899a1c39506427433739562670ec"><div class="ttname"><a href="QuEST__cpu_8c.html#a1807899a1c39506427433739562670ec">densmatr_mixDepolarisingLocal</a></div><div class="ttdeci">void densmatr_mixDepolarisingLocal(Qureg qureg, const int targetQubit, qreal depolLevel)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00125">QuEST_cpu.c:125</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#l00160">QuEST.h:160</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#l00957">QuEST_cpu.c:957</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#l00194">QuEST_cpu_distributed.c:194</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a842aaecd6d6cdc194c0b7c84623d2111"><div class="ttname"><a href="QuEST__cpu_8c.html#a842aaecd6d6cdc194c0b7c84623d2111">statevec_pauliXLocal</a></div><div class="ttdeci">void statevec_pauliXLocal(Qureg qureg, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02464">QuEST_cpu.c:2464</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#l00754">QuEST_cpu_distributed.c:754</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_ac0c120ac374b402c576c4b38bcda9992"><div class="ttname"><a href="QuEST__cpu_8c.html#ac0c120ac374b402c576c4b38bcda9992">statevec_controlledUnitaryLocal</a></div><div class="ttdeci">void statevec_controlledUnitaryLocal(Qureg qureg, const int controlQubit, const int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02207">QuEST_cpu.c:2207</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#l02024">QuEST_cpu.c:2024</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#l00452">QuEST_cpu_distributed.c:452</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#l00363">QuEST_cpu_distributed.c:363</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#l00179">QuEST.h:179</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a9f62ff38deae8ef012024d416d749c00"><div class="ttname"><a href="QuEST__cpu_8c.html#a9f62ff38deae8ef012024d416d749c00">statevec_unitaryLocal</a></div><div class="ttdeci">void statevec_unitaryLocal(Qureg qureg, const int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01900">QuEST_cpu.c:1900</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#l00116">QuEST.h:116</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a9226f386d010aaa85efc0e8889d341d5"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a9226f386d010aaa85efc0e8889d341d5">statevec_hadamard</a></div><div class="ttdeci">void statevec_hadamard(Qureg qureg, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01208">QuEST_cpu_distributed.c:1208</a></div></div>
<div class="ttc" id="agroup__debug_html_gaa8437ef3bf135231e2916e64dde1c94e"><div class="ttname"><a href="group__debug.html#gaa8437ef3bf135231e2916e64dde1c94e">seedQuESTDefault</a></div><div class="ttdeci">void seedQuESTDefault()</div><div class="ttdoc">Seed the Mersenne Twister used for random number generation in the QuEST environment with an example ...</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01321">QuEST_cpu_distributed.c:1321</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a73b56fbac6e464a37805fa9d9657a8f9"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a73b56fbac6e464a37805fa9d9657a8f9">statevec_pauliY</a></div><div class="ttdeci">void statevec_pauliY(Qureg qureg, const int targetQubit)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01092">QuEST_cpu_distributed.c:1092</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#l00356">QuEST_cpu_distributed.c:356</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a623e5479f5dd45e87fe2acef55620771"><div class="ttname"><a href="QuEST__cpu_8c.html#a623e5479f5dd45e87fe2acef55620771">statevec_multiControlledUnitaryDistributed</a></div><div class="ttdeci">void statevec_multiControlledUnitaryDistributed(Qureg qureg, const 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#l02413">QuEST_cpu.c:2413</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#l00179">QuEST_cpu_distributed.c:179</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a3ad35691d74b79e759c0fc53862c68b5"><div class="ttname"><a href="QuEST__cpu_8c.html#a3ad35691d74b79e759c0fc53862c68b5">statevec_controlledPauliYDistributed</a></div><div class="ttdeci">void statevec_controlledPauliYDistributed(Qureg qureg, const int controlQubit, ComplexArray stateVecIn, ComplexArray stateVecOut, const int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02793">QuEST_cpu.c:2793</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#l01338">QuEST_cpu_distributed.c:1338</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a8edf5f2066b05fb343931f45e2bec8f8"><div class="ttname"><a href="QuEST__cpu_8c.html#a8edf5f2066b05fb343931f45e2bec8f8">statevec_pauliYLocal</a></div><div class="ttdeci">void statevec_pauliYLocal(Qureg qureg, const int targetQubit, const int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02647">QuEST_cpu.c:2647</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_acc5726bc7f899d5fd85454ffcc64f60c"><div class="ttname"><a href="QuEST__cpu_8c.html#acc5726bc7f899d5fd85454ffcc64f60c">statevec_multiControlledMultiQubitUnitaryLocal</a></div><div class="ttdeci">void statevec_multiControlledMultiQubitUnitaryLocal(Qureg qureg, long long int ctrlMask, int *targs, const int numTargs, ComplexMatrixN u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l01814">QuEST_cpu.c:1814</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#l00487">QuEST_cpu.c:487</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#l00165">QuEST.h:165</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#l00166">QuEST_cpu_distributed.c:166</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#l03539">QuEST_cpu.c:3539</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ab33cdf01831c4545e51299178acf7f27"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ab33cdf01831c4545e51299178acf7f27">statevec_calcProbOfOutcome</a></div><div class="ttdeci">qreal statevec_calcProbOfOutcome(Qureg qureg, const int measureQubit, int outcome)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01263">QuEST_cpu_distributed.c:1263</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#l00325">QuEST_cpu_distributed.c:325</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a49af21aad0ad254c64a10cb6d39e4a64"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a49af21aad0ad254c64a10cb6d39e4a64">statevec_multiControlledTwoQubitUnitary</a></div><div class="ttdeci">void statevec_multiControlledTwoQubitUnitary(Qureg qureg, long long int ctrlMask, const int q1, const 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#l01385">QuEST_cpu_distributed.c:1385</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_a3528cf8d741807987d8150d59ccb1ba3"><div class="ttname"><a href="QuEST__cpu_8c.html#a3528cf8d741807987d8150d59ccb1ba3">statevec_pauliYDistributed</a></div><div class="ttdeci">void statevec_pauliYDistributed(Qureg qureg, ComplexArray stateVecIn, ComplexArray stateVecOut, int updateUpper, const 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#l02704">QuEST_cpu.c:2704</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a94ee4df9faba286ad7a5bc829ef5174d"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a94ee4df9faba286ad7a5bc829ef5174d">statevec_compactUnitary</a></div><div class="ttdeci">void statevec_compactUnitary(Qureg qureg, const int targetQubit, Complex alpha, Complex beta)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00846">QuEST_cpu_distributed.c:846</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#l00236">QuEST_cpu_distributed.c:236</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#l00261">QuEST_validation.c:261</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#l00430">QuEST_cpu_distributed.c:430</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a230eea38971f36de8f5437b1f47aaf3e"><div class="ttname"><a href="QuEST__cpu_8c.html#a230eea38971f36de8f5437b1f47aaf3e">statevec_controlledCompactUnitaryDistributed</a></div><div class="ttdeci">void statevec_controlledCompactUnitaryDistributed(Qureg qureg, const 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#l02285">QuEST_cpu.c:2285</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#l02894">QuEST_cpu.c:2894</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_a7ec46b4b96cda399095a2488ceff69b6"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#a7ec46b4b96cda399095a2488ceff69b6">statevec_multiControlledUnitary</a></div><div class="ttdeci">void statevec_multiControlledUnitary(Qureg qureg, long long int ctrlQubitsMask, long long int ctrlFlipMask, const int targetQubit, ComplexMatrix2 u)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l00999">QuEST_cpu_distributed.c:999</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a9028deac63419d71d523f73229a7bd84"><div class="ttname"><a href="QuEST__cpu_8c.html#a9028deac63419d71d523f73229a7bd84">statevec_controlledPauliYLocal</a></div><div class="ttdeci">void statevec_controlledPauliYLocal(Qureg qureg, const int controlQubit, const int targetQubit, const int conjFac)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l02740">QuEST_cpu.c:2740</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#l00198">QuEST_cpu_distributed.c:198</a></div></div>
<div class="ttc" id="aQuEST__cpu_8c_html_a28d2a35fde2952211f5898a76275d93d"><div class="ttname"><a href="QuEST__cpu_8c.html#a28d2a35fde2952211f5898a76275d93d">densmatr_mixDampingDistributed</a></div><div class="ttdeci">void densmatr_mixDampingDistributed(Qureg qureg, const int targetQubit, qreal damping)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu_8c_source.html#l00299">QuEST_cpu.c:299</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#l00227">QuEST_cpu_distributed.c:227</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#l01070">QuEST_cpu.c:1070</a></div></div>
<div class="ttc" id="aQuEST__cpu__distributed_8c_html_ad405e3fac20997043e0236b751e44270"><div class="ttname"><a href="QuEST__cpu__distributed_8c.html#ad405e3fac20997043e0236b751e44270">densmatr_calcProbOfOutcome</a></div><div class="ttdeci">qreal densmatr_calcProbOfOutcome(Qureg qureg, const int measureQubit, int outcome)</div><div class="ttdef"><b>Definition:</b> <a href="QuEST__cpu__distributed_8c_source.html#l01279">QuEST_cpu_distributed.c:1279</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#l00114">QuEST.h:114</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#l00989">QuEST_cpu.c:989</a></div></div>
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