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<a href="a17052.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">// <experimental/random> -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 2015-2018 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// any later version.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</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"> 20</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file experimental/random</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This is a TS C++ Library header.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#ifndef _GLIBCXX_EXPERIMENTAL_RANDOM</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#define _GLIBCXX_EXPERIMENTAL_RANDOM 1</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <<a class="code" href="a17052.html">random</a>></span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <<a class="code" href="a00995.html">experimental/bits/lfts_config.h</a>></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"> 35</span> <span class="keyword">namespace </span><a class="code" href="a01538.html">std</a> {</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">namespace </span>experimental {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">inline</span> <span class="keyword">namespace </span>fundamentals_v2 {</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#define __cpp_lib_experimental_randint 201511</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">inline</span> <a class="code" href="a06268.html">std::default_random_engine</a>&</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  _S_randint_engine()</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">static</span> thread_local default_random_engine __eng{random_device{}()};</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">return</span> __eng;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// 13.2.2.1, Function template randint</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _IntType></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">inline</span> _IntType</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  randint(_IntType __a, _IntType __b)</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  static_assert(is_integral<_IntType>::value && <span class="keyword">sizeof</span>(_IntType) > 1,</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="stringliteral">"argument must be an integer type"</span>);</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">using</span> _Dist = <a class="code" href="a07936.html">std::uniform_int_distribution<_IntType></a>;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// This relies on the fact our uniform_int_distribution is stateless,</span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// otherwise we'd need a static thread_local _Dist and pass it</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">// _Dist::param_type{__a, __b}.</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> _Dist(__a, __b)(_S_randint_engine());</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  reseed()</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  {</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  _S_randint_engine().<a class="code" href="a06268.html#aa0c9986cf366682ff3311bca8021ee19">seed</a>(random_device{}());</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> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  reseed(<a class="code" href="a06268.html#ae47aa1543eb8eef0d874551586c0a8df">default_random_engine::result_type</a> __value)</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  {</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  _S_randint_engine().<a class="code" href="a06268.html#aa0c9986cf366682ff3311bca8021ee19">seed</a>(__value);</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> } <span class="comment">// namespace fundamentals_v2</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> } <span class="comment">// namespace experimental</span></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> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> } <span class="comment">// namespace std</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="a17052_html"><div class="ttname"><a href="a17052.html">random</a></div></div>
<div class="ttc" id="a00995_html"><div class="ttname"><a href="a00995.html">lfts_config.h</a></div></div>
<div class="ttc" id="a01538_html"><div class="ttname"><a href="a01538.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std.</div></div>
<div class="ttc" id="a06268_html_aa0c9986cf366682ff3311bca8021ee19"><div class="ttname"><a href="a06268.html#aa0c9986cf366682ff3311bca8021ee19">std::linear_congruential_engine::seed</a></div><div class="ttdeci">void seed(result_type __s=default_seed)</div><div class="ttdoc">Reseeds the linear_congruential_engine random number generator engine sequence to the seed __s.</div><div class="ttdef"><b>Definition:</b> <a href="a17055_source.html#l00117">bits/random.tcc:117</a></div></div>
<div class="ttc" id="a06268_html_ae47aa1543eb8eef0d874551586c0a8df"><div class="ttname"><a href="a06268.html#ae47aa1543eb8eef0d874551586c0a8df">std::linear_congruential_engine::result_type</a></div><div class="ttdeci">_UIntType result_type</div><div class="ttdef"><b>Definition:</b> <a href="a00452_source.html#l00232">random.h:232</a></div></div>
<div class="ttc" id="a07936_html"><div class="ttname"><a href="a07936.html">std::uniform_int_distribution</a></div><div class="ttdoc">Uniform discrete distribution for random numbers. A discrete random distribution on the range with e...</div><div class="ttdef"><b>Definition:</b> <a href="a00617_source.html#l00058">uniform_int_dist.h:58</a></div></div>
<div class="ttc" id="a06268_html"><div class="ttname"><a href="a06268.html">std::linear_congruential_engine</a></div><div class="ttdoc">A model of a linear congruential random number generator.</div><div class="ttdef"><b>Definition:</b> <a href="a00452_source.html#l00229">random.h:229</a></div></div>
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