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<li class="navelem"><a class="el" href="dir_120ed4da3e3217b1e7fc0b4f48568e79.html">test</a></li><li class="navelem"><a class="el" href="dir_32f81901cd335bc9b50167e5e69d3c20.html">csf</a></li> </ul>
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<div class="headertitle"><div class="title">src/test/csf/random.h</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#ifndef XRPL_TEST_CSF_RANDOM_H_INCLUDED</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#define XRPL_TEST_CSF_RANDOM_H_INCLUDED</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/random.html">random</a>&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/vector.html">vector</a>&gt;</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacexrpl.html">xrpl</a> {</div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="keyword">namespace </span>test {</div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="keyword">namespace </span>csf {</div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T, <span class="keyword">class</span> G&gt;</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;T&gt;</a></div>
<div class="foldopen" id="foldopen00022" data-start="{" data-end="}">
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"><a class="line" href="namespacexrpl_1_1test_1_1csf.html#aa4e7e599d8e78949f1f506f49123d06c"> 22</a></span><a class="code hl_function" href="namespacexrpl_1_1test_1_1csf.html#aa4e7e599d8e78949f1f506f49123d06c">random_weighted_shuffle</a>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;T&gt;</a> v, <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;double&gt;</a> w, G&amp; g)</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span>{</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using </span><a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/algorithm/swap.html">std::swap</a>;</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; v.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/container/vector/size.html">size</a>() - 1; ++i)</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> {</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// pick a random item weighted by w</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/numeric/random/discrete_distribution.html">std::discrete_distribution&lt;&gt;</a> dd(w.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/container/vector/begin.html">begin</a>() + i, w.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/container/vector/end.html">end</a>());</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">auto</span> idx = dd(g);</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/algorithm/swap.html">std::swap</a>(v[i], v[idx]);</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/algorithm/swap.html">std::swap</a>(w[i], w[idx]);</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> }</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keywordflow">return</span> v;</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span>}</div>
</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> RandomNumberDistribution, <span class="keyword">class</span> Generator&gt;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span><a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;typename RandomNumberDistribution::result_type&gt;</a></div>
<div class="foldopen" id="foldopen00047" data-start="{" data-end="}">
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"><a class="line" href="namespacexrpl_1_1test_1_1csf.html#a9eb9bf7ab996398a7e64990f4ab66427"> 47</a></span><a class="code hl_function" href="namespacexrpl_1_1test_1_1csf.html#a9eb9bf7ab996398a7e64990f4ab66427">sample</a>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> size, RandomNumberDistribution dist, Generator&amp; g)</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span>{</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;typename RandomNumberDistribution::result_type&gt;</a> res(size);</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/algorithm/generate.html">std::generate</a>(res.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/container/vector/begin.html">begin</a>(), res.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/container/vector/end.html">end</a>(), [&amp;dist, &amp;g]() { return dist(g); });</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keywordflow">return</span> res;</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div>
</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> RAIter, <span class="keyword">class</span> Generator&gt;</div>
<div class="foldopen" id="foldopen00062" data-start="{" data-end="};">
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1Selector.html"> 62</a></span><span class="keyword">class </span><a class="code hl_class" href="classxrpl_1_1test_1_1csf_1_1Selector.html">Selector</a></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span>{</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a6117b2c6c3731c0b529acc16b6aa2c8a"> 64</a></span> RAIter <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a6117b2c6c3731c0b529acc16b6aa2c8a">first_</a>, <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a0767d40a047053db66d2803268e9e077">last_</a>;</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1Selector.html#ab845d020eda84bde6e55e135dce23095"> 65</a></span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/numeric/random/discrete_distribution.html">std::discrete_distribution&lt;&gt;</a> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#ab845d020eda84bde6e55e135dce23095">dd_</a>;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a0ea6f9ddbcb225f906617c518e73af6c"> 66</a></span> Generator <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a0ea6f9ddbcb225f906617c518e73af6c">g_</a>;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="keyword">public</span>:</div>
<div class="foldopen" id="foldopen00075" data-start="{" data-end="}">
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1Selector.html#acdf7b2436cbd2457db7b155cd685a769"> 75</a></span> <a class="code hl_function" href="classxrpl_1_1test_1_1csf_1_1Selector.html#acdf7b2436cbd2457db7b155cd685a769">Selector</a>(</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> RAIter first,</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> RAIter <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/chrono/last_spec.html">last</a>,</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;double&gt;</a> <span class="keyword">const</span>&amp; w,</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> Generator&amp; g)</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> : <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a6117b2c6c3731c0b529acc16b6aa2c8a">first_</a>{first}, <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a0767d40a047053db66d2803268e9e077">last_</a>{<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/chrono/last_spec.html">last</a>}, <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#ab845d020eda84bde6e55e135dce23095">dd_</a>{w.begin(), w.end()}, <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a0ea6f9ddbcb225f906617c518e73af6c">g_</a>{g}</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">using </span>tag = <span class="keyword">typename</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/iterator/iterator_traits.html">std::iterator_traits&lt;RAIter&gt;::iterator_category</a>;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same&lt;tag, std::random_access_iterator_tag&gt;::value</a>,</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="stringliteral">&quot;Selector only supports random access iterators.&quot;</span>);</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="comment">// TODO: Allow for forward iterators</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> }</div>
</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">typename</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/iterator/iterator_traits.html">std::iterator_traits&lt;RAIter&gt;::value_type</a></div>
<div class="foldopen" id="foldopen00090" data-start="{" data-end="}">
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1Selector.html#ac2985ba92f6dc87f35d487c3ac1caed4"> 90</a></span> <a class="code hl_function" href="classxrpl_1_1test_1_1csf_1_1Selector.html#ac2985ba92f6dc87f35d487c3ac1caed4">operator()</a>()</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> {</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">auto</span> idx = <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#ab845d020eda84bde6e55e135dce23095">dd_</a>(<a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a0ea6f9ddbcb225f906617c518e73af6c">g_</a>);</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keywordflow">return</span> *(<a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1Selector.html#a6117b2c6c3731c0b529acc16b6aa2c8a">first_</a> + idx);</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> }</div>
</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span>};</div>
</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iter, <span class="keyword">typename</span> Generator&gt;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span>Selector&lt;Iter, Generator&gt;</div>
<div class="foldopen" id="foldopen00099" data-start="{" data-end="}">
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"><a class="line" href="namespacexrpl_1_1test_1_1csf.html#a3e3f7ca0650b6f67ca92d443ca44ed0c"> 99</a></span><a class="code hl_function" href="namespacexrpl_1_1test_1_1csf.html#a3e3f7ca0650b6f67ca92d443ca44ed0c">makeSelector</a>(Iter first, Iter <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/chrono/last_spec.html">last</a>, <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector&lt;double&gt;</a> <span class="keyword">const</span>&amp; w, Generator&amp; g)</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span>{</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keywordflow">return</span> <a class="code hl_class" href="classxrpl_1_1test_1_1csf_1_1Selector.html">Selector&lt;Iter, Generator&gt;</a>(first, <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/chrono/last_spec.html">last</a>, w, g);</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span>}</div>
</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span><span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="comment">// Additional distributions of interest not defined in &lt;random&gt;</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="foldopen" id="foldopen00109" data-start="{" data-end="};">
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html"> 109</a></span><span class="keyword">class </span><a class="code hl_class" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html">ConstantDistribution</a></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span>{</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#a12897591a083c51c56149a3a2c30efb1"> 111</a></span> <span class="keywordtype">double</span> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#a12897591a083c51c56149a3a2c30efb1">t_</a>;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span><span class="keyword">public</span>:</div>
<div class="foldopen" id="foldopen00114" data-start="{" data-end="}">
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#a8fc2c114b685eca9de61c9bf003e3bf3"> 114</a></span> <a class="code hl_function" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#a8fc2c114b685eca9de61c9bf003e3bf3">ConstantDistribution</a>(<span class="keywordtype">double</span> <span class="keyword">const</span>&amp; t) : <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#a12897591a083c51c56149a3a2c30efb1">t_</a>{t}</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> {</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> }</div>
</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keyword">template</span> &lt;<span class="keyword">class</span> Generator&gt;</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">inline</span> <span class="keywordtype">double</span></div>
<div class="foldopen" id="foldopen00120" data-start="{" data-end="}">
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#acb5f1b3d785371db0745931133c1ac32"> 120</a></span> <a class="code hl_function" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#acb5f1b3d785371db0745931133c1ac32">operator()</a>(Generator&amp;)</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> {</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#a12897591a083c51c56149a3a2c30efb1">t_</a>;</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> }</div>
</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span>};</div>
</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> </div>
<div class="foldopen" id="foldopen00132" data-start="{" data-end="};">
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html"> 132</a></span><span class="keyword">class </span><a class="code hl_class" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html">PowerLawDistribution</a></div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span>{</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a110757f83a9ca4b781225337e9c9fae5"> 134</a></span> <span class="keywordtype">double</span> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a110757f83a9ca4b781225337e9c9fae5">xmin_</a>;</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a708a74eaa3babe0684029bf1f27606ec"> 135</a></span> <span class="keywordtype">double</span> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a708a74eaa3babe0684029bf1f27606ec">a_</a>;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a5fc2c4d3cd7b6960a7247f1d851ee069"> 136</a></span> <span class="keywordtype">double</span> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a5fc2c4d3cd7b6960a7247f1d851ee069">inv_</a>;</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#ad41f4e89b0c27286493932e96fc4e168"> 137</a></span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/numeric/random/uniform_real_distribution.html">std::uniform_real_distribution&lt;double&gt;</a> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#ad41f4e89b0c27286493932e96fc4e168">uf_</a>{0, 1};</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> </div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a4e46aa95e1e22fece8f245b74685a623"> 140</a></span> <span class="keyword">using </span><a class="code hl_typedef" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a4e46aa95e1e22fece8f245b74685a623">result_type</a> = double;</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="foldopen" id="foldopen00142" data-start="{" data-end="}">
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a56e8a0a22d446fd5d33b769abbce613b"> 142</a></span> <a class="code hl_function" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a56e8a0a22d446fd5d33b769abbce613b">PowerLawDistribution</a>(<span class="keywordtype">double</span> xmin, <span class="keywordtype">double</span> a) : <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a110757f83a9ca4b781225337e9c9fae5">xmin_</a>{xmin}, <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a708a74eaa3babe0684029bf1f27606ec">a_</a>{a}</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> {</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a5fc2c4d3cd7b6960a7247f1d851ee069">inv_</a> = 1.0 / (1.0 - <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a708a74eaa3babe0684029bf1f27606ec">a_</a>);</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> }</div>
</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> </div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keyword">template</span> &lt;<span class="keyword">class</span> Generator&gt;</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keyword">inline</span> <span class="keywordtype">double</span></div>
<div class="foldopen" id="foldopen00149" data-start="{" data-end="}">
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"><a class="line" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a92f33317d7ce30922d59bdef7776fa73"> 149</a></span> <a class="code hl_function" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a92f33317d7ce30922d59bdef7776fa73">operator()</a>(Generator&amp; g)</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> {</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="comment">// use inverse transform of CDF to sample</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="comment">// CDF is P(X &lt;= x): 1 - (x/xmin)^(1-a)</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a110757f83a9ca4b781225337e9c9fae5">xmin_</a> * <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/numeric/math/pow.html">std::pow</a>(1 - <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#ad41f4e89b0c27286493932e96fc4e168">uf_</a>(g), <a class="code hl_variable" href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a5fc2c4d3cd7b6960a7247f1d851ee069">inv_</a>);</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> }</div>
</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span>};</div>
</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> </div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span>} <span class="comment">// namespace csf</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span>} <span class="comment">// namespace test</span></div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span>} <span class="comment">// namespace xrpl</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> </div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="abegin_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/begin.html">std::vector::begin</a></div><div class="ttdeci">T begin(T... args)</div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1ConstantDistribution_html"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html">xrpl::test::csf::ConstantDistribution</a></div><div class="ttdoc">Constant &quot;distribution&quot; that always returns the same value.</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00109">src/test/csf/random.h:110</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1ConstantDistribution_html_a12897591a083c51c56149a3a2c30efb1"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#a12897591a083c51c56149a3a2c30efb1">xrpl::test::csf::ConstantDistribution::t_</a></div><div class="ttdeci">double t_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00111">src/test/csf/random.h:111</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1ConstantDistribution_html_a8fc2c114b685eca9de61c9bf003e3bf3"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#a8fc2c114b685eca9de61c9bf003e3bf3">xrpl::test::csf::ConstantDistribution::ConstantDistribution</a></div><div class="ttdeci">ConstantDistribution(double const &amp;t)</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00114">src/test/csf/random.h:114</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1ConstantDistribution_html_acb5f1b3d785371db0745931133c1ac32"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1ConstantDistribution.html#acb5f1b3d785371db0745931133c1ac32">xrpl::test::csf::ConstantDistribution::operator()</a></div><div class="ttdeci">double operator()(Generator &amp;)</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00120">src/test/csf/random.h:120</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1PowerLawDistribution_html"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html">xrpl::test::csf::PowerLawDistribution</a></div><div class="ttdoc">Power-law distribution with PDF.</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00132">src/test/csf/random.h:133</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1PowerLawDistribution_html_a110757f83a9ca4b781225337e9c9fae5"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a110757f83a9ca4b781225337e9c9fae5">xrpl::test::csf::PowerLawDistribution::xmin_</a></div><div class="ttdeci">double xmin_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00134">src/test/csf/random.h:134</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1PowerLawDistribution_html_a4e46aa95e1e22fece8f245b74685a623"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a4e46aa95e1e22fece8f245b74685a623">xrpl::test::csf::PowerLawDistribution::result_type</a></div><div class="ttdeci">double result_type</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00140">src/test/csf/random.h:140</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1PowerLawDistribution_html_a56e8a0a22d446fd5d33b769abbce613b"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a56e8a0a22d446fd5d33b769abbce613b">xrpl::test::csf::PowerLawDistribution::PowerLawDistribution</a></div><div class="ttdeci">PowerLawDistribution(double xmin, double a)</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00142">src/test/csf/random.h:142</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1PowerLawDistribution_html_a5fc2c4d3cd7b6960a7247f1d851ee069"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a5fc2c4d3cd7b6960a7247f1d851ee069">xrpl::test::csf::PowerLawDistribution::inv_</a></div><div class="ttdeci">double inv_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00136">src/test/csf/random.h:136</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1PowerLawDistribution_html_a708a74eaa3babe0684029bf1f27606ec"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a708a74eaa3babe0684029bf1f27606ec">xrpl::test::csf::PowerLawDistribution::a_</a></div><div class="ttdeci">double a_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00135">src/test/csf/random.h:135</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1PowerLawDistribution_html_a92f33317d7ce30922d59bdef7776fa73"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#a92f33317d7ce30922d59bdef7776fa73">xrpl::test::csf::PowerLawDistribution::operator()</a></div><div class="ttdeci">double operator()(Generator &amp;g)</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00149">src/test/csf/random.h:149</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1PowerLawDistribution_html_ad41f4e89b0c27286493932e96fc4e168"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1PowerLawDistribution.html#ad41f4e89b0c27286493932e96fc4e168">xrpl::test::csf::PowerLawDistribution::uf_</a></div><div class="ttdeci">std::uniform_real_distribution&lt; double &gt; uf_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00137">src/test/csf/random.h:137</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1Selector_html"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1Selector.html">xrpl::test::csf::Selector</a></div><div class="ttdoc">Invocable that returns random samples from a range according to a discrete distribution.</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00062">src/test/csf/random.h:63</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1Selector_html_a0767d40a047053db66d2803268e9e077"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1Selector.html#a0767d40a047053db66d2803268e9e077">xrpl::test::csf::Selector::last_</a></div><div class="ttdeci">RAIter last_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00064">src/test/csf/random.h:64</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1Selector_html_a0ea6f9ddbcb225f906617c518e73af6c"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1Selector.html#a0ea6f9ddbcb225f906617c518e73af6c">xrpl::test::csf::Selector::g_</a></div><div class="ttdeci">Generator g_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00066">src/test/csf/random.h:66</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1Selector_html_a6117b2c6c3731c0b529acc16b6aa2c8a"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1Selector.html#a6117b2c6c3731c0b529acc16b6aa2c8a">xrpl::test::csf::Selector::first_</a></div><div class="ttdeci">RAIter first_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00064">src/test/csf/random.h:64</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1Selector_html_ab845d020eda84bde6e55e135dce23095"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1Selector.html#ab845d020eda84bde6e55e135dce23095">xrpl::test::csf::Selector::dd_</a></div><div class="ttdeci">std::discrete_distribution dd_</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00065">src/test/csf/random.h:65</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1Selector_html_ac2985ba92f6dc87f35d487c3ac1caed4"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1Selector.html#ac2985ba92f6dc87f35d487c3ac1caed4">xrpl::test::csf::Selector::operator()</a></div><div class="ttdeci">std::iterator_traits&lt; RAIter &gt;::value_type operator()()</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00090">src/test/csf/random.h:90</a></div></div>
<div class="ttc" id="aclassxrpl_1_1test_1_1csf_1_1Selector_html_acdf7b2436cbd2457db7b155cd685a769"><div class="ttname"><a href="classxrpl_1_1test_1_1csf_1_1Selector.html#acdf7b2436cbd2457db7b155cd685a769">xrpl::test::csf::Selector::Selector</a></div><div class="ttdeci">Selector(RAIter first, RAIter last, std::vector&lt; double &gt; const &amp;w, Generator &amp;g)</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00075">src/test/csf/random.h:75</a></div></div>
<div class="ttc" id="adiscrete_distribution_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/random/discrete_distribution.html">std::discrete_distribution</a></div></div>
<div class="ttc" id="aend_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/end.html">std::vector::end</a></div><div class="ttdeci">T end(T... args)</div></div>
<div class="ttc" id="agenerate_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/generate.html">std::generate</a></div><div class="ttdeci">T generate(T... args)</div></div>
<div class="ttc" id="ais_same_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same</a></div></div>
<div class="ttc" id="aiterator_traits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/iterator/iterator_traits.html">std::iterator_traits</a></div></div>
<div class="ttc" id="alast_spec_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/last_spec.html">std::chrono::last</a></div></div>
<div class="ttc" id="anamespacexrpl_1_1test_1_1csf_html_a3e3f7ca0650b6f67ca92d443ca44ed0c"><div class="ttname"><a href="namespacexrpl_1_1test_1_1csf.html#a3e3f7ca0650b6f67ca92d443ca44ed0c">xrpl::test::csf::makeSelector</a></div><div class="ttdeci">Selector&lt; Iter, Generator &gt; makeSelector(Iter first, Iter last, std::vector&lt; double &gt; const &amp;w, Generator &amp;g)</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00099">src/test/csf/random.h:99</a></div></div>
<div class="ttc" id="anamespacexrpl_1_1test_1_1csf_html_a9eb9bf7ab996398a7e64990f4ab66427"><div class="ttname"><a href="namespacexrpl_1_1test_1_1csf.html#a9eb9bf7ab996398a7e64990f4ab66427">xrpl::test::csf::sample</a></div><div class="ttdeci">std::vector&lt; typename RandomNumberDistribution::result_type &gt; sample(std::size_t size, RandomNumberDistribution dist, Generator &amp;g)</div><div class="ttdoc">Generate a vector of random samples.</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00047">src/test/csf/random.h:47</a></div></div>
<div class="ttc" id="anamespacexrpl_1_1test_1_1csf_html_aa4e7e599d8e78949f1f506f49123d06c"><div class="ttname"><a href="namespacexrpl_1_1test_1_1csf.html#aa4e7e599d8e78949f1f506f49123d06c">xrpl::test::csf::random_weighted_shuffle</a></div><div class="ttdeci">std::vector&lt; T &gt; random_weighted_shuffle(std::vector&lt; T &gt; v, std::vector&lt; double &gt; w, G &amp;g)</div><div class="ttdoc">Return a randomly shuffled copy of vector based on weights w.</div><div class="ttdef"><b>Definition</b> <a href="src_2test_2csf_2random_8h_source.html#l00022">src/test/csf/random.h:22</a></div></div>
<div class="ttc" id="anamespacexrpl_html"><div class="ttname"><a href="namespacexrpl.html">xrpl</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition</b> <a href="algorithm_8h_source.html#l00006">algorithm.h:6</a></div></div>
<div class="ttc" id="apow_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/math/pow.html">std::pow</a></div><div class="ttdeci">T pow(T... args)</div></div>
<div class="ttc" id="arandom_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/random.html">random</a></div></div>
<div class="ttc" id="asize_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector/size.html">std::vector::size</a></div><div class="ttdeci">T size(T... args)</div></div>
<div class="ttc" id="asize_t_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a></div></div>
<div class="ttc" id="aswap_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/swap.html">std::swap</a></div><div class="ttdeci">T swap(T... args)</div></div>
<div class="ttc" id="auniform_real_distribution_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/random/uniform_real_distribution.html">std::uniform_real_distribution</a></div></div>
<div class="ttc" id="avector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/vector.html">vector</a></div></div>
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