mirror of
https://github.com/XRPLF/rippled.git
synced 2025-11-22 03:55:53 +00:00
276 lines
38 KiB
HTML
276 lines
38 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
|
|
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
|
|
<meta name="generator" content="Doxygen 1.8.17"/>
|
|
<meta name="viewport" content="width=device-width, initial-scale=1"/>
|
|
<title>rippled: random.h Source File</title>
|
|
<link href="tabs.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="jquery.js"></script>
|
|
<script type="text/javascript" src="dynsections.js"></script>
|
|
<link href="search/search.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="search/searchdata.js"></script>
|
|
<script type="text/javascript" src="search/search.js"></script>
|
|
<link href="doxygen.css" rel="stylesheet" type="text/css" />
|
|
</head>
|
|
<body>
|
|
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
|
|
<div id="titlearea">
|
|
<table cellspacing="0" cellpadding="0">
|
|
<tbody>
|
|
<tr style="height: 56px;">
|
|
<td id="projectalign" style="padding-left: 0.5em;">
|
|
<div id="projectname">rippled
|
|
</div>
|
|
</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</div>
|
|
<!-- end header part -->
|
|
<!-- Generated by Doxygen 1.8.17 -->
|
|
<script type="text/javascript">
|
|
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
|
|
var searchBox = new SearchBox("searchBox", "search",false,'Search');
|
|
/* @license-end */
|
|
</script>
|
|
<script type="text/javascript" src="menudata.js"></script>
|
|
<script type="text/javascript" src="menu.js"></script>
|
|
<script type="text/javascript">
|
|
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
|
|
$(function() {
|
|
initMenu('',true,false,'search.php','Search');
|
|
$(document).ready(function() { init_search(); });
|
|
});
|
|
/* @license-end */</script>
|
|
<div id="main-nav"></div>
|
|
<!-- window showing the filter options -->
|
|
<div id="MSearchSelectWindow"
|
|
onmouseover="return searchBox.OnSearchSelectShow()"
|
|
onmouseout="return searchBox.OnSearchSelectHide()"
|
|
onkeydown="return searchBox.OnSearchSelectKey(event)">
|
|
</div>
|
|
|
|
<!-- iframe showing the search results (closed by default) -->
|
|
<div id="MSearchResultsWindow">
|
|
<iframe src="javascript:void(0)" frameborder="0"
|
|
name="MSearchResults" id="MSearchResults">
|
|
</iframe>
|
|
</div>
|
|
|
|
<div id="nav-path" class="navpath">
|
|
<ul>
|
|
<li class="navelem"><a class="el" href="dir_df9c78dcf3f59a33b12284f95992a64b.html">ripple</a></li><li class="navelem"><a class="el" href="dir_5f536ab1985a8dcd28bcfd618bc58e92.html">basics</a></li> </ul>
|
|
</div>
|
|
</div><!-- top -->
|
|
<div class="header">
|
|
<div class="headertitle">
|
|
<div class="title">ripple/basics/random.h</div> </div>
|
|
</div><!--header-->
|
|
<div class="contents">
|
|
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//------------------------------------------------------------------------------</span></div>
|
|
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/*</span></div>
|
|
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
|
|
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright (c) 2012, 2013 Ripple Labs Inc.</span></div>
|
|
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span> </div>
|
|
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
|
|
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
|
|
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
|
|
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span> </div>
|
|
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
|
|
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
|
|
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
|
|
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
|
|
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
|
|
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
|
|
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
|
|
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">*/</span></div>
|
|
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">//==============================================================================</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="preprocessor">#ifndef RIPPLE_BASICS_RANDOM_H_INCLUDED</span></div>
|
|
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#define RIPPLE_BASICS_RANDOM_H_INCLUDED</span></div>
|
|
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
|
|
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <ripple/beast/xor_shift_engine.h></span></div>
|
|
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cassert.html">cassert</a>></span></div>
|
|
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstddef.html">cstddef</a>></span></div>
|
|
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a>></span></div>
|
|
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstring.html">cstring</a>></span></div>
|
|
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/limits.html">limits</a>></span></div>
|
|
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/mutex.html">mutex</a>></span></div>
|
|
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/random.html">random</a>></span></div>
|
|
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a>></span></div>
|
|
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
|
|
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</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="preprocessor">#ifndef __INTELLISENSE__</span></div>
|
|
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> static_assert(</div>
|
|
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_integral.html">std::is_integral<beast::xor_shift_engine::result_type>::value</a> &&</div>
|
|
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_unsigned.html">std::is_unsigned<beast::xor_shift_engine::result_type>::value</a>,</div>
|
|
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="stringliteral">"The Ripple default PRNG engine must return an unsigned integral type."</span>);</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> static_assert(</div>
|
|
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits<beast::xor_shift_engine::result_type>::max</a>() >=</div>
|
|
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits<std::uint64_t>::max</a>(),</div>
|
|
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="stringliteral">"The Ripple default PRNG engine return must be at least 64 bits wide."</span>);</div>
|
|
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#endif</span></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> <span class="keyword">namespace </span>detail {</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">// Determines if a type can be called like an Engine</span></div>
|
|
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">template</span> <<span class="keyword">class</span> Engine, <span class="keyword">class</span> Result = <span class="keyword">typename</span> Engine::result_type></div>
|
|
<div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="namespaceripple_1_1detail.html#afc38aa9ea5bbed77a9d15119fe3ad676"> 51</a></span> <span class="keyword">using</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_invocable.html">is_engine</a> = <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_invocable.html">std::is_invocable_r<Result, Engine></a>;</div>
|
|
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> } <span class="comment">// namespace detail</span></div>
|
|
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
|
|
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">inline</span> <a class="code" href="classbeast_1_1detail_1_1xor__shift__engine.html">beast::xor_shift_engine</a>&</div>
|
|
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="namespaceripple.html#a8439f02fc1834046d791febb643887cb"> 65</a></span> <a class="code" href="namespaceripple.html#a8439f02fc1834046d791febb643887cb">default_prng</a>()</div>
|
|
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> {</div>
|
|
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// This is used to seed the thread-specific PRNGs on demand</span></div>
|
|
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">static</span> <a class="code" href="classbeast_1_1detail_1_1xor__shift__engine.html">beast::xor_shift_engine</a> seeder = [] {</div>
|
|
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/numeric/random/random_device.html">std::random_device</a> rng;</div>
|
|
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/numeric/random/uniform_int_distribution.html">std::uniform_int_distribution<std::uint64_t></a> distribution{1};</div>
|
|
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> <a class="code" href="namespacebeast.html#a3a89b040ab5ccff1b2ce7692464c6a48">beast::xor_shift_engine</a>(distribution(rng));</div>
|
|
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }();</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">// This protects the seeder</span></div>
|
|
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">static</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/mutex.html">std::mutex</a> m;</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>  <span class="comment">// The thread-specific PRNGs:</span></div>
|
|
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  thread_local <a class="code" href="classbeast_1_1detail_1_1xor__shift__engine.html">beast::xor_shift_engine</a> engine = [] {</div>
|
|
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> seed;</div>
|
|
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  {</div>
|
|
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a> lk(m);</div>
|
|
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/numeric/random/uniform_int_distribution.html">std::uniform_int_distribution<std::uint64_t></a> distribution{1};</div>
|
|
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  seed = distribution(seeder);</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> <a class="code" href="classbeast_1_1detail_1_1xor__shift__engine.html">beast::xor_shift_engine</a>{seed};</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"> 88</span>  <span class="keywordflow">return</span> engine;</div>
|
|
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> }</div>
|
|
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  </div>
|
|
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">template</span> <<span class="keyword">class</span> Engine, <span class="keyword">class</span> Integral></div>
|
|
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a><</div>
|
|
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_integral.html">std::is_integral<Integral>::value</a> && detail::is_engine<Engine>::value,</div>
|
|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  Integral></div>
|
|
<div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc"> 115</a></span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(Engine& engine, Integral min, Integral max)</div>
|
|
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> {</div>
|
|
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  assert(max > min);</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>  <span class="comment">// This should have no state and constructing it should</span></div>
|
|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">// be very cheap. If that turns out not to be the case</span></div>
|
|
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// it could be hand-optimized.</span></div>
|
|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">return</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/numeric/random/uniform_int_distribution.html">std::uniform_int_distribution<Integral></a>(min, max)(engine);</div>
|
|
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> }</div>
|
|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  </div>
|
|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">template</span> <<span class="keyword">class</span> Integral></div>
|
|
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t<std::is_integral<Integral>::value</a>, Integral></div>
|
|
<div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="namespaceripple.html#aa5fb5ef9fc6555a627bdbde17a59cd2a"> 127</a></span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(Integral min, Integral max)</div>
|
|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> {</div>
|
|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(<a class="code" href="namespaceripple.html#a8439f02fc1834046d791febb643887cb">default_prng</a>(), min, max);</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>  </div>
|
|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="keyword">template</span> <<span class="keyword">class</span> Engine, <span class="keyword">class</span> Integral></div>
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a><</div>
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_integral.html">std::is_integral<Integral>::value</a> && detail::is_engine<Engine>::value,</div>
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  Integral></div>
|
|
<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="namespaceripple.html#ad6b8a6e25e2640e9f1323ba7ef907753"> 136</a></span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(Engine& engine, Integral max)</div>
|
|
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> {</div>
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(engine, Integral(0), max);</div>
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> }</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> <span class="keyword">template</span> <<span class="keyword">class</span> Integral></div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t<std::is_integral<Integral>::value</a>, Integral></div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="namespaceripple.html#a89a958ee44d4968d8a302b666f035dee"> 143</a></span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(Integral max)</div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> {</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(<a class="code" href="namespaceripple.html#a8439f02fc1834046d791febb643887cb">default_prng</a>(), max);</div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</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="keyword">template</span> <<span class="keyword">class</span> Integral, <span class="keyword">class</span> Engine></div>
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a><</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_integral.html">std::is_integral<Integral>::value</a> && detail::is_engine<Engine>::value,</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  Integral></div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="namespaceripple.html#a864072ee03b60d93515463c1d61ac87f"> 152</a></span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(Engine& engine)</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>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(engine, <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits<Integral>::max</a>());</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> }</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> <span class="keyword">template</span> <<span class="keyword">class</span> Integral = <span class="keywordtype">int</span>></div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t<std::is_integral<Integral>::value</a>, Integral></div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"><a class="line" href="namespaceripple.html#a789891ca96899d7d6e82ae9b5fdf7dea"> 159</a></span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>()</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> {</div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(<a class="code" href="namespaceripple.html#a8439f02fc1834046d791febb643887cb">default_prng</a>(), <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits<Integral>::max</a>());</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> }</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="keyword">template</span> <<span class="keyword">class</span> Byte, <span class="keyword">class</span> Engine></div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a><</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  (<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same<Byte, unsigned char>::value</a> ||</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same<Byte, std::uint8_t>::value</a>) &&</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  detail::is_engine<Engine>::value,</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  Byte></div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"><a class="line" href="namespaceripple.html#a49379951733bfc8bc00ea5d33c94eaa6"> 173</a></span> <a class="code" href="namespaceripple.html#a49379951733bfc8bc00ea5d33c94eaa6">rand_byte</a>(Engine& engine)</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> {</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>Byte<span class="keyword">></span>(rand_int<Engine, std::uint32_t>(</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  engine,</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits<Byte>::min</a>(),</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits<Byte>::max</a>()));</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> }</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  </div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">template</span> <<span class="keyword">class</span> Byte = std::u<span class="keywordtype">int</span>8_t></div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a><</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  (<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same<Byte, unsigned char>::value</a> ||</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same<Byte, std::uint8_t>::value</a>),</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  Byte></div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="namespaceripple.html#aa6ae7a62d7bb87fc818b4e568bda26c7"> 186</a></span> <a class="code" href="namespaceripple.html#a49379951733bfc8bc00ea5d33c94eaa6">rand_byte</a>()</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> {</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">return</span> rand_byte<Byte>(<a class="code" href="namespaceripple.html#a8439f02fc1834046d791febb643887cb">default_prng</a>());</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> }</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">template</span> <<span class="keyword">class</span> Engine></div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span></div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"><a class="line" href="namespaceripple.html#a37fc7093cfe63d4e2cab63d40aa813dd"> 196</a></span> <a class="code" href="namespaceripple.html#a37fc7093cfe63d4e2cab63d40aa813dd">rand_bool</a>(Engine& engine)</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> {</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">rand_int</a>(engine, 1) == 1;</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> }</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  </div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span></div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"><a class="line" href="namespaceripple.html#ad7f6ed671155855d566c0adb954b188b"> 202</a></span> <a class="code" href="namespaceripple.html#a37fc7093cfe63d4e2cab63d40aa813dd">rand_bool</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>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a37fc7093cfe63d4e2cab63d40aa813dd">rand_bool</a>(<a class="code" href="namespaceripple.html#a8439f02fc1834046d791febb643887cb">default_prng</a>());</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> }</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> } <span class="comment">// namespace ripple</span></div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  </div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="preprocessor">#endif // RIPPLE_BASICS_RANDOM_H_INCLUDED</span></div>
|
|
</div><!-- fragment --></div><!-- contents -->
|
|
<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="anamespacebeast_html_a3a89b040ab5ccff1b2ce7692464c6a48"><div class="ttname"><a href="namespacebeast.html#a3a89b040ab5ccff1b2ce7692464c6a48">beast::xor_shift_engine</a></div><div class="ttdeci">detail::xor_shift_engine<> xor_shift_engine</div><div class="ttdoc">XOR-shift Generator.</div><div class="ttdef"><b>Definition:</b> <a href="xor__shift__engine_8h_source.html#l00114">xor_shift_engine.h:114</a></div></div>
|
|
<div class="ttc" id="ais_unsigned_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/is_unsigned.html">std::is_unsigned</a></div></div>
|
|
<div class="ttc" id="auniform_int_distribution_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/random/uniform_int_distribution.html">std::uniform_int_distribution</a></div></div>
|
|
<div class="ttc" id="acstring_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cstring.html">cstring</a></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="alock_guard_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/thread/lock_guard.html">std::lock_guard</a></div><div class="ttdoc">STL class.</div></div>
|
|
<div class="ttc" id="anamespaceripple_html_a71a6227fec78db0b06595d62c06b25dc"><div class="ttname"><a href="namespaceripple.html#a71a6227fec78db0b06595d62c06b25dc">ripple::rand_int</a></div><div class="ttdeci">std::enable_if_t< std::is_integral< Integral >::value &&detail::is_engine< Engine >::value, Integral > rand_int(Engine &engine, Integral min, Integral max)</div><div class="ttdoc">Return a uniformly distributed random integer.</div><div class="ttdef"><b>Definition:</b> <a href="ripple_2basics_2random_8h_source.html#l00115">ripple/basics/random.h:115</a></div></div>
|
|
<div class="ttc" id="arandom_device_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/random/random_device.html">std::random_device</a></div></div>
|
|
<div class="ttc" id="aenable_if_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a></div></div>
|
|
<div class="ttc" id="acstddef_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cstddef.html">cstddef</a></div></div>
|
|
<div class="ttc" id="anamespaceripple_html_a49379951733bfc8bc00ea5d33c94eaa6"><div class="ttname"><a href="namespaceripple.html#a49379951733bfc8bc00ea5d33c94eaa6">ripple::rand_byte</a></div><div class="ttdeci">std::enable_if_t<(std::is_same< Byte, unsigned char >::value||std::is_same< Byte, std::uint8_t >::value) &&detail::is_engine< Engine >::value, Byte > rand_byte(Engine &engine)</div><div class="ttdoc">Return a random byte.</div><div class="ttdef"><b>Definition:</b> <a href="ripple_2basics_2random_8h_source.html#l00173">ripple/basics/random.h:173</a></div></div>
|
|
<div class="ttc" id="anamespaceripple_html_a8439f02fc1834046d791febb643887cb"><div class="ttname"><a href="namespaceripple.html#a8439f02fc1834046d791febb643887cb">ripple::default_prng</a></div><div class="ttdeci">beast::xor_shift_engine & default_prng()</div><div class="ttdoc">Return the default random engine.</div><div class="ttdef"><b>Definition:</b> <a href="ripple_2basics_2random_8h_source.html#l00065">ripple/basics/random.h:65</a></div></div>
|
|
<div class="ttc" id="acstdint_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a></div></div>
|
|
<div class="ttc" id="ais_invocable_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/is_invocable.html">std::is_invocable_r</a></div></div>
|
|
<div class="ttc" id="ainteger_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a></div></div>
|
|
<div class="ttc" id="ais_integral_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/is_integral.html">std::is_integral</a></div></div>
|
|
<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</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="RCLCensorshipDetector_8h_source.html#l00029">RCLCensorshipDetector.h:29</a></div></div>
|
|
<div class="ttc" id="alimits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/limits.html">limits</a></div></div>
|
|
<div class="ttc" id="acassert_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cassert.html">cassert</a></div></div>
|
|
<div class="ttc" id="amutex_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/mutex.html">mutex</a></div></div>
|
|
<div class="ttc" id="aclassbeast_1_1detail_1_1xor__shift__engine_html"><div class="ttname"><a href="classbeast_1_1detail_1_1xor__shift__engine.html">beast::detail::xor_shift_engine</a></div><div class="ttdef"><b>Definition:</b> <a href="xor__shift__engine_8h_source.html#l00032">xor_shift_engine.h:32</a></div></div>
|
|
<div class="ttc" id="anamespaceripple_html_a37fc7093cfe63d4e2cab63d40aa813dd"><div class="ttname"><a href="namespaceripple.html#a37fc7093cfe63d4e2cab63d40aa813dd">ripple::rand_bool</a></div><div class="ttdeci">bool rand_bool(Engine &engine)</div><div class="ttdoc">Return a random boolean value.</div><div class="ttdef"><b>Definition:</b> <a href="ripple_2basics_2random_8h_source.html#l00196">ripple/basics/random.h:196</a></div></div>
|
|
<div class="ttc" id="anumeric_limits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits</a></div></div>
|
|
<div class="ttc" id="atype_traits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a></div></div>
|
|
<!-- start footer part -->
|
|
<hr class="footer"/><address class="footer"><small>
|
|
Generated by  <a href="http://www.doxygen.org/index.html">
|
|
<img class="footer" src="doxygen.png" alt="doxygen"/>
|
|
</a> 1.8.17
|
|
</small></address>
|
|
</body>
|
|
</html>
|