<!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 1.8.15"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>libstdc++: std::normal_distribution< _RealType > Class Template Reference</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="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtreedata.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> /* @license 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align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="a06312.html">param_type</a></td></tr> <tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a> Public Types</h2></td></tr> <tr class="memitem:ae45488abda3f5b20d944da2da5a70001"><td class="memItemLeft" align="right" valign="top">typedef _RealType </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a></td></tr> <tr class="separator:ae45488abda3f5b20d944da2da5a70001"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a> Public Member Functions</h2></td></tr> <tr class="memitem:a658ac956ac7ba2337b60388d188d09cf"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#a658ac956ac7ba2337b60388d188d09cf">normal_distribution</a> (<a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> __mean=<a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a>(0), <a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> __stddev=<a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a>(1))</td></tr> <tr class="separator:a658ac956ac7ba2337b60388d188d09cf"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a9190b33d9dca58619a7123b7280d23ff"><td class="memItemLeft" align="right" valign="top"><a id="a9190b33d9dca58619a7123b7280d23ff"></a>  </td><td class="memItemRight" valign="bottom"><b>normal_distribution</b> (const <a class="el" href="a06312.html">param_type</a> &__p)</td></tr> <tr class="separator:a9190b33d9dca58619a7123b7280d23ff"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a9a34eb16548d9b9c0ca550fc1978425a"><td class="memTemplParams" colspan="2"><a id="a9a34eb16548d9b9c0ca550fc1978425a"></a> template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > </td></tr> <tr class="memitem:a9a34eb16548d9b9c0ca550fc1978425a"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><b>__generate</b> (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator &__urng)</td></tr> <tr class="separator:a9a34eb16548d9b9c0ca550fc1978425a"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a0acace466d66dc36f8b53bb5d9f6415b"><td class="memTemplParams" colspan="2"><a id="a0acace466d66dc36f8b53bb5d9f6415b"></a> template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > </td></tr> <tr class="memitem:a0acace466d66dc36f8b53bb5d9f6415b"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><b>__generate</b> (_ForwardIterator __f, _ForwardIterator __t, _UniformRandomNumberGenerator &__urng, const <a class="el" href="a06312.html">param_type</a> &__p)</td></tr> <tr class="separator:a0acace466d66dc36f8b53bb5d9f6415b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:aa5a06493b317be1649d3a60b028e5dad"><td class="memTemplParams" colspan="2"><a id="aa5a06493b317be1649d3a60b028e5dad"></a> template<typename _UniformRandomNumberGenerator > </td></tr> <tr class="memitem:aa5a06493b317be1649d3a60b028e5dad"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><b>__generate</b> (<a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> *__f, <a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> *__t, _UniformRandomNumberGenerator &__urng, const <a class="el" href="a06312.html">param_type</a> &__p)</td></tr> <tr class="separator:aa5a06493b317be1649d3a60b028e5dad"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ae433f04f988a93f6e835d7cf7fbbde31"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#ae433f04f988a93f6e835d7cf7fbbde31">max</a> () const</td></tr> <tr class="separator:ae433f04f988a93f6e835d7cf7fbbde31"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:abcc6e9b8ff25f5d1e076cb5f51f42231"><td class="memItemLeft" align="right" valign="top">_RealType </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#abcc6e9b8ff25f5d1e076cb5f51f42231">mean</a> () const</td></tr> <tr class="separator:abcc6e9b8ff25f5d1e076cb5f51f42231"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:aa79e79b65edcb6f45dda08b3efdff9e8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#aa79e79b65edcb6f45dda08b3efdff9e8">min</a> () const</td></tr> <tr class="separator:aa79e79b65edcb6f45dda08b3efdff9e8"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ae67f6ec56c5564a3521d734d90f35501"><td class="memTemplParams" colspan="2">template<typename _UniformRandomNumberGenerator > </td></tr> <tr class="memitem:ae67f6ec56c5564a3521d734d90f35501"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06308.html#ae67f6ec56c5564a3521d734d90f35501">operator()</a> (_UniformRandomNumberGenerator &__urng)</td></tr> <tr class="separator:ae67f6ec56c5564a3521d734d90f35501"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a159f2f44c19a01c99cb937297d03604c"><td class="memTemplParams" colspan="2">template<typename _UniformRandomNumberGenerator > </td></tr> <tr class="memitem:a159f2f44c19a01c99cb937297d03604c"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06308.html#a159f2f44c19a01c99cb937297d03604c">operator()</a> (_UniformRandomNumberGenerator &__urng, const <a class="el" href="a06312.html">param_type</a> &__p)</td></tr> <tr class="separator:a159f2f44c19a01c99cb937297d03604c"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a63085cf246a895f8b03ccb632d4fd0c7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a06312.html">param_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#a63085cf246a895f8b03ccb632d4fd0c7">param</a> () const</td></tr> <tr class="separator:a63085cf246a895f8b03ccb632d4fd0c7"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a9e150060b4fd9ea4fef8f07d8b249944"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#a9e150060b4fd9ea4fef8f07d8b249944">param</a> (const <a class="el" href="a06312.html">param_type</a> &__param)</td></tr> <tr class="separator:a9e150060b4fd9ea4fef8f07d8b249944"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a757217130ef7b0eb980500afc8bd865c"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#a757217130ef7b0eb980500afc8bd865c">reset</a> ()</td></tr> <tr class="separator:a757217130ef7b0eb980500afc8bd865c"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a43aa93573bdffbacfde869b5a11bed31"><td class="memItemLeft" align="right" valign="top">_RealType </td><td class="memItemRight" valign="bottom"><a class="el" href="a06308.html#a43aa93573bdffbacfde869b5a11bed31">stddev</a> () const</td></tr> <tr class="separator:a43aa93573bdffbacfde869b5a11bed31"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a> Friends</h2></td></tr> <tr class="memitem:abdfecf8325ed9e856625871fee2c56a3"><td class="memTemplParams" colspan="2">template<typename _RealType1 , typename _CharT , typename _Traits > </td></tr> <tr class="memitem:abdfecf8325ed9e856625871fee2c56a3"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a02460.html">std::basic_ostream</a>< _CharT, _Traits > & </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06308.html#abdfecf8325ed9e856625871fee2c56a3">operator<<</a> (<a class="el" href="a02460.html">std::basic_ostream</a>< _CharT, _Traits > &__os, const <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType1 > &__x)</td></tr> <tr class="separator:abdfecf8325ed9e856625871fee2c56a3"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:afaafdb22ede1508109622f89f50e213d"><td class="memTemplParams" colspan="2">template<typename _RealType1 > </td></tr> <tr class="memitem:afaafdb22ede1508109622f89f50e213d"><td class="memTemplItemLeft" align="right" valign="top">bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06308.html#afaafdb22ede1508109622f89f50e213d">operator==</a> (const <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType1 > &__d1, const <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType1 > &__d2)</td></tr> <tr class="separator:afaafdb22ede1508109622f89f50e213d"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ac440bfeab944ac2efe370a05088ed47c"><td class="memTemplParams" colspan="2">template<typename _RealType1 , typename _CharT , typename _Traits > </td></tr> <tr class="memitem:ac440bfeab944ac2efe370a05088ed47c"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a02456.html">std::basic_istream</a>< _CharT, _Traits > & </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a06308.html#ac440bfeab944ac2efe370a05088ed47c">operator>></a> (<a class="el" href="a02456.html">std::basic_istream</a>< _CharT, _Traits > &__is, <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType1 > &__x)</td></tr> <tr class="separator:ac440bfeab944ac2efe370a05088ed47c"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <div class="textblock"><h3>template<typename _RealType = double><br /> class std::normal_distribution< _RealType ></h3> <p>A normal continuous distribution for random numbers. </p> <p>The formula for the normal probability density function is </p><p class="formulaDsp"> <img class="formulaDsp" alt="\[ p(x|\mu,\sigma) = \frac{1}{\sigma \sqrt{2 \pi}} e^{- \frac{{x - \mu}^ {2}}{2 \sigma ^ {2}} } \]" src="form_5.png"/> </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l01925">1925</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div><h2 class="groupheader">Member Typedef Documentation</h2> <a id="ae45488abda3f5b20d944da2da5a70001"></a> <h2 class="memtitle"><span class="permalink"><a href="#ae45488abda3f5b20d944da2da5a70001">◆ </a></span>result_type</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="memname"> <tr> <td class="memname">typedef _RealType <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::<a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a></td> </tr> </table> </div><div class="memdoc"> <p>The type of the range of the distribution. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l01928">1928</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div> </div> <h2 class="groupheader">Constructor & Destructor Documentation</h2> <a id="a658ac956ac7ba2337b60388d188d09cf"></a> <h2 class="memtitle"><span class="permalink"><a href="#a658ac956ac7ba2337b60388d188d09cf">◆ </a></span>normal_distribution()</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::<a class="el" href="a06308.html">normal_distribution</a> </td> <td>(</td> <td class="paramtype"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> </td> <td class="paramname"><em>__mean</em> = <code><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a>(0)</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> </td> <td class="paramname"><em>__stddev</em> = <code><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a>(1)</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">explicit</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Constructs a normal distribution with parameters <img class="formulaInl" alt="$mean$" src="form_32.png"/> and standard deviation. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l01975">1975</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div> </div> <h2 class="groupheader">Member Function Documentation</h2> <a id="ae433f04f988a93f6e835d7cf7fbbde31"></a> <h2 class="memtitle"><span class="permalink"><a href="#ae433f04f988a93f6e835d7cf7fbbde31">◆ </a></span>max()</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::max </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Returns the least upper bound value of the distribution. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l02032">2032</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div> </div> <a id="abcc6e9b8ff25f5d1e076cb5f51f42231"></a> <h2 class="memtitle"><span class="permalink"><a href="#abcc6e9b8ff25f5d1e076cb5f51f42231">◆ </a></span>mean()</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">_RealType <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::mean </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Returns the mean of the distribution. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l01996">1996</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div> </div> <a id="aa79e79b65edcb6f45dda08b3efdff9e8"></a> <h2 class="memtitle"><span class="permalink"><a href="#aa79e79b65edcb6f45dda08b3efdff9e8">◆ </a></span>min()</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::min </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Returns the greatest lower bound value of the distribution. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l02025">2025</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div> </div> <a id="ae67f6ec56c5564a3521d734d90f35501"></a> <h2 class="memtitle"><span class="permalink"><a href="#ae67f6ec56c5564a3521d734d90f35501">◆ </a></span>operator()() <span class="overload">[1/2]</span></h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <div class="memtemplate"> template<typename _UniformRandomNumberGenerator > </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::operator() </td> <td>(</td> <td class="paramtype">_UniformRandomNumberGenerator & </td> <td class="paramname"><em>__urng</em></td><td>)</td> <td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Generating functions. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l02040">2040</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> <p class="reference">Referenced by <a class="el" href="a00452_source.html#l02040">std::normal_distribution< result_type >::operator()()</a>.</p> </div> </div> <a id="a159f2f44c19a01c99cb937297d03604c"></a> <h2 class="memtitle"><span class="permalink"><a href="#a159f2f44c19a01c99cb937297d03604c">◆ </a></span>operator()() <span class="overload">[2/2]</span></h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType > </div> <div class="memtemplate"> template<typename _UniformRandomNumberGenerator > </div> <table class="memname"> <tr> <td class="memname"><a class="el" href="a06308.html">normal_distribution</a>< _RealType >::<a class="el" href="a06308.html#ae45488abda3f5b20d944da2da5a70001">result_type</a> <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::operator() </td> <td>(</td> <td class="paramtype">_UniformRandomNumberGenerator & </td> <td class="paramname"><em>__urng</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="a06312.html">param_type</a> & </td> <td class="paramname"><em>__param</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Polar method due to Marsaglia.</p> <p>Devroye, L. Non-Uniform Random Variates Generation. Springer-Verlag, New York, 1986, Ch. V, Sect. 4.4. </p> <p class="definition">Definition at line <a class="el" href="a17055_source.html#l01786">1786</a> of file <a class="el" href="a17055_source.html">bits/random.tcc</a>.</p> </div> </div> <a id="a63085cf246a895f8b03ccb632d4fd0c7"></a> <h2 class="memtitle"><span class="permalink"><a href="#a63085cf246a895f8b03ccb632d4fd0c7">◆ </a></span>param() <span class="overload">[1/2]</span></h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a06312.html">param_type</a> <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::param </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Returns the parameter set of the distribution. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l02010">2010</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div> </div> <a id="a9e150060b4fd9ea4fef8f07d8b249944"></a> <h2 class="memtitle"><span class="permalink"><a href="#a9e150060b4fd9ea4fef8f07d8b249944">◆ </a></span>param() <span class="overload">[2/2]</span></h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">void <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::param </td> <td>(</td> <td class="paramtype">const <a class="el" href="a06312.html">param_type</a> & </td> <td class="paramname"><em>__param</em></td><td>)</td> <td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Sets the parameter set of the distribution. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">__param</td><td>The new parameter set of the distribution. </td></tr> </table> </dd> </dl> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l02018">2018</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div> </div> <a id="a757217130ef7b0eb980500afc8bd865c"></a> <h2 class="memtitle"><span class="permalink"><a href="#a757217130ef7b0eb980500afc8bd865c">◆ </a></span>reset()</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">void <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::reset </td> <td>(</td> <td class="paramname"></td><td>)</td> <td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Resets the distribution state. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l01989">1989</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> <p class="reference">Referenced by <a class="el" href="a00452_source.html#l02199">std::lognormal_distribution< _RealType >::reset()</a>, <a class="el" href="a00452_source.html#l02423">std::gamma_distribution< result_type >::reset()</a>, <a class="el" href="a00452_source.html#l03278">std::student_t_distribution< _RealType >::reset()</a>, <a class="el" href="a00452_source.html#l03734">std::binomial_distribution< _IntType >::reset()</a>, and <a class="el" href="a00452_source.html#l04393">std::poisson_distribution< _IntType >::reset()</a>.</p> </div> </div> <a id="a43aa93573bdffbacfde869b5a11bed31"></a> <h2 class="memtitle"><span class="permalink"><a href="#a43aa93573bdffbacfde869b5a11bed31">◆ </a></span>stddev()</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">_RealType <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType >::stddev </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Returns the standard deviation of the distribution. </p> <p class="definition">Definition at line <a class="el" href="a00452_source.html#l02003">2003</a> of file <a class="el" href="a00452_source.html">random.h</a>.</p> </div> </div> <h2 class="groupheader">Friends And Related Function Documentation</h2> <a id="abdfecf8325ed9e856625871fee2c56a3"></a> <h2 class="memtitle"><span class="permalink"><a href="#abdfecf8325ed9e856625871fee2c56a3">◆ </a></span>operator<<</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <div class="memtemplate"> template<typename _RealType1 , typename _CharT , typename _Traits > </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a02460.html">std::basic_ostream</a><_CharT, _Traits>& operator<< </td> <td>(</td> <td class="paramtype"><a class="el" href="a02460.html">std::basic_ostream</a>< _CharT, _Traits > & </td> <td class="paramname"><em>__os</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType1 > & </td> <td class="paramname"><em>__x</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">friend</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Inserts a normal_distribution random number distribution <code>__x</code> into the output stream <code>__os</code>. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">__os</td><td>An output stream. </td></tr> <tr><td class="paramname">__x</td><td>A normal_distribution random number distribution.</td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>The output stream with the state of <code>__x</code> inserted or in an error state. </dd></dl> </div> </div> <a id="afaafdb22ede1508109622f89f50e213d"></a> <h2 class="memtitle"><span class="permalink"><a href="#afaafdb22ede1508109622f89f50e213d">◆ </a></span>operator==</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <div class="memtemplate"> template<typename _RealType1 > </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">bool operator== </td> <td>(</td> <td class="paramtype">const <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType1 > & </td> <td class="paramname"><em>__d1</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="a06308.html">std::normal_distribution</a>< _RealType1 > & </td> <td class="paramname"><em>__d2</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">friend</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Return true if two normal distributions have the same parameters and the sequences that would be generated are equal. </p> </div> </div> <a id="ac440bfeab944ac2efe370a05088ed47c"></a> <h2 class="memtitle"><span class="permalink"><a href="#ac440bfeab944ac2efe370a05088ed47c">◆ </a></span>operator>></h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _RealType = double> </div> <div class="memtemplate"> template<typename _RealType1 , typename _CharT , typename _Traits > </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a02456.html">std::basic_istream</a><_CharT, _Traits>& operator>> </td> <td>(</td> <td class="paramtype"><a class="el" href="a02456.html">std::basic_istream</a>< _CharT, _Traits > & </td> <td class="paramname"><em>__is</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="a06308.html">std::normal_distribution</a>< _RealType1 > & </td> <td class="paramname"><em>__x</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">friend</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Extracts a normal_distribution random number distribution <code>__x</code> from the input stream <code>__is</code>. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">__is</td><td>An input stream. </td></tr> <tr><td class="paramname">__x</td><td>A normal_distribution random number generator engine.</td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>The input stream with <code>__x</code> extracted or in an error state. </dd></dl> </div> </div> <hr/>The documentation for this class was generated from the following files:<ul> <li><a class="el" href="a00452_source.html">random.h</a></li> <li><a class="el" href="a17055_source.html">bits/random.tcc</a></li> </ul> </div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="navelem"><a class="el" href="a01538.html">std</a></li><li 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