<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://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 1.8.3"/> <title>libstdc++: std::poisson_distribution< _IntType > 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="navtree.js"></script> <script type="text/javascript"> $(document).ready(initResizable); $(window).load(resizeHeight); </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 style="padding-left: 0.5em;"> <div id="projectname">libstdc++ </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.3 --> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> $(document).ready(function(){initNavTree('a00880.html','');}); </script> <div id="doc-content"> <div class="header"> <div class="summary"> <a href="#nested-classes">Classes</a> | <a href="#pub-types">Public Types</a> | <a href="#pub-methods">Public Member Functions</a> | <a href="#friends">Friends</a> | <a href="a03184.html">List of all members</a> </div> <div class="headertitle"> <div class="title">std::poisson_distribution< _IntType > Class Template Reference<div class="ingroups"><a class="el" href="a01690.html">Poisson Distributions</a></div></div> </div> </div><!--header--> <div class="contents"> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a> Classes</h2></td></tr> <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="a00881.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:a4c3d7ee8432d89d43749cb2c0aa7a588"><td class="memItemLeft" align="right" valign="top">typedef _IntType </td><td class="memItemRight" valign="bottom"><a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a></td></tr> <tr class="separator:a4c3d7ee8432d89d43749cb2c0aa7a588"><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:a750b39e44f386dc05574eb60a4044189"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a750b39e44f386dc05574eb60a4044189"></a>  </td><td class="memItemRight" valign="bottom"><b>poisson_distribution</b> (double __mean=1.0)</td></tr> <tr class="separator:a750b39e44f386dc05574eb60a4044189"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ae13d9eba8cae94119a0b0a003072fbc2"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae13d9eba8cae94119a0b0a003072fbc2"></a>  </td><td class="memItemRight" valign="bottom"><b>poisson_distribution</b> (const <a class="el" href="a00881.html">param_type</a> &__p)</td></tr> <tr class="separator:ae13d9eba8cae94119a0b0a003072fbc2"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:af52804ef9c9e4242cedcd6782169cd78"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00880.html#af52804ef9c9e4242cedcd6782169cd78">max</a> () const </td></tr> <tr class="separator:af52804ef9c9e4242cedcd6782169cd78"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a239484069ed9b20e5d6949c2c42db989"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="a00880.html#a239484069ed9b20e5d6949c2c42db989">mean</a> () const </td></tr> <tr class="separator:a239484069ed9b20e5d6949c2c42db989"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a5faf76eff45d2171d40deaa8ab3c807e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00880.html#a5faf76eff45d2171d40deaa8ab3c807e">min</a> () const </td></tr> <tr class="separator:a5faf76eff45d2171d40deaa8ab3c807e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a4ca984da5920a260845933c37d20cc2e"><td class="memTemplParams" colspan="2">template<typename _UniformRandomNumberGenerator > </td></tr> <tr class="memitem:a4ca984da5920a260845933c37d20cc2e"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00880.html#a4ca984da5920a260845933c37d20cc2e">operator()</a> (_UniformRandomNumberGenerator &__urng)</td></tr> <tr class="separator:a4ca984da5920a260845933c37d20cc2e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a09b00c6571fa3099f12918955723f41d"><td class="memTemplParams" colspan="2">template<typename _UniformRandomNumberGenerator > </td></tr> <tr class="memitem:a09b00c6571fa3099f12918955723f41d"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00880.html#a09b00c6571fa3099f12918955723f41d">operator()</a> (_UniformRandomNumberGenerator &__urng, const <a class="el" href="a00881.html">param_type</a> &__p)</td></tr> <tr class="separator:a09b00c6571fa3099f12918955723f41d"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:af9de79858d221c5e490045740dda9954"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00881.html">param_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00880.html#af9de79858d221c5e490045740dda9954">param</a> () const </td></tr> <tr class="separator:af9de79858d221c5e490045740dda9954"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ac0233f87c798faa09a5cbeb91969bd8c"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00880.html#ac0233f87c798faa09a5cbeb91969bd8c">param</a> (const <a class="el" href="a00881.html">param_type</a> &__param)</td></tr> <tr class="separator:ac0233f87c798faa09a5cbeb91969bd8c"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a22ecafd7d767621e777f6e8e556ff453"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00880.html#a22ecafd7d767621e777f6e8e556ff453">reset</a> ()</td></tr> <tr class="separator:a22ecafd7d767621e777f6e8e556ff453"><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:a9264a0eb6efd5ac01a57ed452e6f6d9a"><td class="memTemplParams" colspan="2">template<typename _IntType1 , typename _CharT , typename _Traits > </td></tr> <tr class="memitem:a9264a0eb6efd5ac01a57ed452e6f6d9a"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a00432.html">std::basic_ostream</a>< _CharT, <br class="typebreak"/> _Traits > & </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00880.html#a9264a0eb6efd5ac01a57ed452e6f6d9a">operator<<</a> (<a class="el" href="a00432.html">std::basic_ostream</a>< _CharT, _Traits > &__os, const <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType1 > &__x)</td></tr> <tr class="separator:a9264a0eb6efd5ac01a57ed452e6f6d9a"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a97a69ac6a7f5db9c986887cac931ce85"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00880.html#a97a69ac6a7f5db9c986887cac931ce85">operator==</a> (const <a class="el" href="a00880.html">poisson_distribution</a> &__d1, const <a class="el" href="a00880.html">poisson_distribution</a> &__d2)</td></tr> <tr class="separator:a97a69ac6a7f5db9c986887cac931ce85"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ada1ead00f77a845a7dad6a50e38abe2e"><td class="memTemplParams" colspan="2">template<typename _IntType1 , typename _CharT , typename _Traits > </td></tr> <tr class="memitem:ada1ead00f77a845a7dad6a50e38abe2e"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a00431.html">std::basic_istream</a>< _CharT, <br class="typebreak"/> _Traits > & </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00880.html#ada1ead00f77a845a7dad6a50e38abe2e">operator>></a> (<a class="el" href="a00431.html">std::basic_istream</a>< _CharT, _Traits > &__is, <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType1 > &__x)</td></tr> <tr class="separator:ada1ead00f77a845a7dad6a50e38abe2e"><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 _IntType = int><br/> class std::poisson_distribution< _IntType ></h3> <p>A discrete Poisson random number distribution. </p> <p>The formula for the Poisson probability density function is <img class="formulaInl" alt="$p(i|\mu) = \frac{\mu^i}{i!} e^{-\mu}$" src="form_19.png"/> where <img class="formulaInl" alt="$\mu$" src="form_20.png"/> is the parameter of the distribution. </p> <p>Definition at line <a class="el" href="a01395_source.html#l03957">3957</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> </div><h2 class="groupheader">Member Typedef Documentation</h2> <a class="anchor" id="a4c3d7ee8432d89d43749cb2c0aa7a588"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <table class="memname"> <tr> <td class="memname">typedef _IntType <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::<a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a></td> </tr> </table> </div><div class="memdoc"> <p>The type of the range of the distribution. </p> <p>Definition at line <a class="el" href="a01395_source.html#l03960">3960</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> </div> </div> <h2 class="groupheader">Member Function Documentation</h2> <a class="anchor" id="af52804ef9c9e4242cedcd6782169cd78"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a> <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::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>Definition at line <a class="el" href="a01395_source.html#l04051">4051</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> <p>References <a class="el" href="a01279_source.html#l00313">std::numeric_limits< _Tp >::max()</a>.</p> </div> </div> <a class="anchor" id="a239484069ed9b20e5d6949c2c42db989"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">double <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::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 distribution parameter <code>mean</code>. </p> <p>Definition at line <a class="el" href="a01395_source.html#l04022">4022</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> </div> </div> <a class="anchor" id="a5faf76eff45d2171d40deaa8ab3c807e"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a> <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::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>Definition at line <a class="el" href="a01395_source.html#l04044">4044</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> </div> </div> <a class="anchor" id="a4ca984da5920a260845933c37d20cc2e"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </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="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a> <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::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>Definition at line <a class="el" href="a01395_source.html#l04059">4059</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> <p>References <a class="el" href="a01395_source.html#l04059">std::poisson_distribution< _IntType >::operator()()</a>, and <a class="el" href="a01395_source.html#l04029">std::poisson_distribution< _IntType >::param()</a>.</p> <p>Referenced by <a class="el" href="a01395_source.html#l04059">std::poisson_distribution< _IntType >::operator()()</a>.</p> </div> </div> <a class="anchor" id="a09b00c6571fa3099f12918955723f41d"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType > </div> <div class="memtemplate"> template<typename _UniformRandomNumberGenerator > </div> <table class="memname"> <tr> <td class="memname"><a class="el" href="a00880.html">poisson_distribution</a>< _IntType >::<a class="el" href="a00880.html#a4c3d7ee8432d89d43749cb2c0aa7a588">result_type</a> <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::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="a00881.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>A rejection algorithm when mean >= 12 and a simple method based upon the multiplication of uniform random variates otherwise. NB: The former is available only if _GLIBCXX_USE_C99_MATH_TR1 is defined.</p> <p>Reference: Devroye, L. Non-Uniform Random Variates Generation. Springer-Verlag, New York, 1986, Ch. X, Sects. 3.3 & 3.4 (+ Errata!). </p> <p>Definition at line <a class="el" href="a01396_source.html#l01228">1228</a> of file <a class="el" href="a01396_source.html">random.tcc</a>.</p> <p>References <a class="el" href="a01049_source.html#l00596">std::abs()</a>, <a class="el" href="a01279_source.html#l00325">std::numeric_limits< _Tp >::epsilon()</a>, <a class="el" href="a01049_source.html#l00784">std::log()</a>, and <a class="el" href="a01279_source.html#l00313">std::numeric_limits< _Tp >::max()</a>.</p> </div> </div> <a class="anchor" id="af9de79858d221c5e490045740dda9954"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a00881.html">param_type</a> <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::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>Definition at line <a class="el" href="a01395_source.html#l04029">4029</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> <p>Referenced by <a class="el" href="a01395_source.html#l04059">std::poisson_distribution< _IntType >::operator()()</a>.</p> </div> </div> <a class="anchor" id="ac0233f87c798faa09a5cbeb91969bd8c"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">void <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::param </td> <td>(</td> <td class="paramtype">const <a class="el" href="a00881.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>Definition at line <a class="el" href="a01395_source.html#l04037">4037</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> </div> </div> <a class="anchor" id="a22ecafd7d767621e777f6e8e556ff453"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">void <a class="el" href="a00880.html">std::poisson_distribution</a>< _IntType >::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>Definition at line <a class="el" href="a01395_source.html#l04015">4015</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> <p>References <a class="el" href="a01395_source.html#l02039">std::normal_distribution< _RealType >::reset()</a>.</p> </div> </div> <h2 class="groupheader">Friends And Related Function Documentation</h2> <a class="anchor" id="a9264a0eb6efd5ac01a57ed452e6f6d9a"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <div class="memtemplate"> template<typename _IntType1 , typename _CharT , typename _Traits > </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a00432.html">std::basic_ostream</a><_CharT, _Traits>& operator<< </td> <td>(</td> <td class="paramtype"><a class="el" href="a00432.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="a00880.html">std::poisson_distribution</a>< _IntType1 > & </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 poisson_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 poisson_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 class="anchor" id="a97a69ac6a7f5db9c986887cac931ce85"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </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="a00880.html">poisson_distribution</a>< _IntType > & </td> <td class="paramname"><em>__d1</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="a00880.html">poisson_distribution</a>< _IntType > & </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 Poisson distributions have the same parameters and the sequences that would be generated are equal. </p> <p>Definition at line <a class="el" href="a01395_source.html#l04073">4073</a> of file <a class="el" href="a01395_source.html">random.h</a>.</p> </div> </div> <a class="anchor" id="ada1ead00f77a845a7dad6a50e38abe2e"></a> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _IntType = int> </div> <div class="memtemplate"> template<typename _IntType1 , typename _CharT , typename _Traits > </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a00431.html">std::basic_istream</a><_CharT, _Traits>& operator>> </td> <td>(</td> <td class="paramtype"><a class="el" href="a00431.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="a00880.html">std::poisson_distribution</a>< _IntType1 > & </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 poisson_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 poisson_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="a01395_source.html">random.h</a></li> <li><a class="el" href="a01396_source.html">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="a01604.html">std</a></li><li class="navelem"><a class="el" href="a00880.html">poisson_distribution</a></li> <li class="footer">Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.3 </li> </ul> </div> </body> </html>