quest_bind 0.3.7

Wrapper around the Quantum Exact Simulation Toolkit (QuEST)
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<div class="title">QuEST_precision.h</div>  </div>
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<a href="QuEST__precision_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<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>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor"># include &lt;math.h&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor"># ifndef QUEST_PRECISION_H</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor"># define QUEST_PRECISION_H</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160; </div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">// set default double precision if not set during compilation</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor"># ifndef QuEST_PREC</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor"># define QuEST_PREC 2</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160; </div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"> * Single precision, which uses 4 bytes per amplitude component</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor"># if QuEST_PREC==1</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">    # define qreal float</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="comment">// \cond HIDDEN_SYMBOLS   </span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">    # define MPI_QuEST_REAL MPI_FLOAT</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">    # define MPI_MAX_AMPS_IN_MSG (1LL&lt;&lt;29) // must be 2^int</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">    # define REAL_STRING_FORMAT &quot;%.8f&quot;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">    # define REAL_QASM_FORMAT &quot;%.8g&quot;</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">    # define REAL_EPS 1e-5</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor">    # define REAL_SPECIFIER &quot;%f&quot;</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">    # define absReal(X) fabs(X) // not fabsf(X) - better to return doubles where possible</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="comment">// \endcond</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"> * Double precision, which uses 8 bytes per amplitude component</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="preprocessor"># elif QuEST_PREC==2</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">    # define qreal double</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="comment">// \cond HIDDEN_SYMBOLS   </span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">    # define MPI_QuEST_REAL MPI_DOUBLE</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">    # define MPI_MAX_AMPS_IN_MSG (1LL&lt;&lt;28) // must be 2^int</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">    # define REAL_STRING_FORMAT &quot;%.14f&quot;</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="preprocessor">    # define REAL_QASM_FORMAT &quot;%.14g&quot;</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">    # define REAL_EPS 1e-13</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">    # define REAL_SPECIFIER &quot;%lf&quot;</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">    # define absReal(X) fabs(X)</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    <span class="comment">// \endcond</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment"> * Quad precision, which uses 16 bytes per amplitude component.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment"> * This is not compatible with most GPUs.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor"># elif QuEST_PREC==4</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">    # define qreal long double</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="comment">// \cond HIDDEN_SYMBOLS   </span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">    # define MPI_QuEST_REAL MPI_LONG_DOUBLE</span></div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">    # define MPI_MAX_AMPS_IN_MSG (1LL&lt;&lt;27) // must be 2^int</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">    # define REAL_STRING_FORMAT &quot;%.17Lf&quot;</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="preprocessor">    # define REAL_QASM_FORMAT &quot;%.17Lg&quot;</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">    # define REAL_EPS 1e-14</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="preprocessor">    # define REAL_SPECIFIER &quot;%Lf&quot;</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="preprocessor">    # define absReal(X) fabsl(X)</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="comment">// \endcond</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment">// the maximum number of qubit registers which can be passed to functions like applyMultiArbitraryPhaseOverrides()</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="QuEST__precision_8h.html#a6698ce2a3971003a0a0289e5980d39c5">   72</a></span>&#160;<span class="preprocessor"># define MAX_NUM_REGS_APPLY_ARBITRARY_PHASE 100</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160; </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160; </div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="preprocessor"># endif // QUEST_PRECISION_H</span></div>
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