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<div class="title">std::chi_squared_distribution< _RealType > Class Template Reference<div class="ingroups"><a class="el" href="a01748.html">Normal Distributions</a></div></div> </div>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="a00667.html">param_type</a></td></tr>
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<tr class="memitem:add3353e1e6f35655c681fe7de51ec8c1"><td class="memItemLeft" align="right" valign="top">typedef _RealType </td><td class="memItemRight" valign="bottom"><a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a></td></tr>
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 </td><td class="memItemRight" valign="bottom"><b>chi_squared_distribution</b> (const <a class="el" href="a00667.html">param_type</a> &__p)</td></tr>
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template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > </td></tr>
<tr class="memitem:af28d8b9192647e93d73b0ff7504cb61e"><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>
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template<typename _ForwardIterator , typename _UniformRandomNumberGenerator > </td></tr>
<tr class="memitem:a99ae483d7d5e438ef4319ebeff6e7ce7"><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="a00667.html">param_type</a> &__p)</td></tr>
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template<typename _UniformRandomNumberGenerator > </td></tr>
<tr class="memitem:a9cd05fcdb1a4d8b1ac695a0d54db12c1"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><b>__generate</b> (<a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a> *__f, <a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a> *__t, _UniformRandomNumberGenerator &__urng)</td></tr>
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template<typename _UniformRandomNumberGenerator > </td></tr>
<tr class="memitem:a3c1215364fe89965be10f08506030527"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><b>__generate</b> (<a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a> *__f, <a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a> *__t, _UniformRandomNumberGenerator &__urng, const <a class="el" href="a00667.html">param_type</a> &__p)</td></tr>
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 </td><td class="memItemRight" valign="bottom"><b>_M_gd</b> (__n/2)</td></tr>
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<tr class="memitem:afa8480edb5ca6ee6cb730c49e3be72a3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00666.html#afa8480edb5ca6ee6cb730c49e3be72a3">max</a> () const </td></tr>
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_RealType </td><td class="memItemRight" valign="bottom"><b>n</b> () const </td></tr>
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<tr class="memitem:a2ddd460528095405f9ee56cf681f306a"><td class="memTemplParams" colspan="2">template<typename _UniformRandomNumberGenerator > </td></tr>
<tr class="memitem:a2ddd460528095405f9ee56cf681f306a"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00666.html#a2ddd460528095405f9ee56cf681f306a">operator()</a> (_UniformRandomNumberGenerator &__urng)</td></tr>
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template<typename _UniformRandomNumberGenerator > </td></tr>
<tr class="memitem:a43fae110de74440343f47f13ff9a0e67"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a> </td><td class="memTemplItemRight" valign="bottom"><b>operator()</b> (_UniformRandomNumberGenerator &__urng, const <a class="el" href="a00667.html">param_type</a> &__p)</td></tr>
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Public Attributes</h2></td></tr>
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 </td><td class="memItemRight" valign="bottom"><b>__pad0__</b>: _M_param(__n)</td></tr>
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Friends</h2></td></tr>
<tr class="memitem:aebe1b72f5b814d959f807aaaf5e6319e"><td class="memTemplParams" colspan="2">template<typename _RealType1 , typename _CharT , typename _Traits > </td></tr>
<tr class="memitem:aebe1b72f5b814d959f807aaaf5e6319e"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a00451.html">std::basic_ostream</a>< _CharT, <br class="typebreak"/>
_Traits > & </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00666.html#aebe1b72f5b814d959f807aaaf5e6319e">operator<<</a> (<a class="el" href="a00451.html">std::basic_ostream</a>< _CharT, _Traits > &__os, const <a class="el" href="a00666.html">std::chi_squared_distribution</a>< _RealType1 > &__x)</td></tr>
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<tr class="memitem:a691feda4d6a0dec975dbe07c838768b6"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00666.html#a691feda4d6a0dec975dbe07c838768b6">operator==</a> (const <a class="el" href="a00666.html">chi_squared_distribution</a> &__d1, const <a class="el" href="a00666.html">chi_squared_distribution</a> &__d2)</td></tr>
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<tr class="memitem:a5c7725e75b4c3fec1a13c3258ceaa6bc"><td class="memTemplParams" colspan="2">template<typename _RealType1 , typename _CharT , typename _Traits > </td></tr>
<tr class="memitem:a5c7725e75b4c3fec1a13c3258ceaa6bc"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a00450.html">std::basic_istream</a>< _CharT, <br class="typebreak"/>
_Traits > & </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a00666.html#a5c7725e75b4c3fec1a13c3258ceaa6bc">operator>></a> (<a class="el" href="a00450.html">std::basic_istream</a>< _CharT, _Traits > &__is, <a class="el" href="a00666.html">std::chi_squared_distribution</a>< _RealType1 > &__x)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template<typename _RealType = double><br/>
class std::chi_squared_distribution< _RealType ></h3>
<p>A chi_squared_distribution random number distribution. </p>
<p>The formula for the normal probability mass function is <img class="formulaInl" alt="$p(x|n) = \frac{x^{(n/2) - 1}e^{-x/2}}{\Gamma(n/2) 2^{n/2}}$" src="form_9.png"/> </p>
<p>Definition at line <a class="el" href="a01452_source.html#l02719">2719</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
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template<typename _RealType = double> </div>
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<p>The type of the range of the distribution. </p>
<p>Definition at line <a class="el" href="a01452_source.html#l02722">2722</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
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<td class="memname"><a class="el" href="a00666.html#add3353e1e6f35655c681fe7de51ec8c1">result_type</a> <a class="el" href="a00666.html">std::chi_squared_distribution</a>< _RealType >::max </td>
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<p>Returns the least upper bound value of the distribution. </p>
<p>Definition at line <a class="el" href="a01452_source.html#l02799">2799</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
<p>References <a class="el" href="a01334_source.html#l00313">std::numeric_limits< _Tp >::max()</a>.</p>
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<p>Returns the greatest lower bound value of the distribution. </p>
<p>Definition at line <a class="el" href="a01452_source.html#l02792">2792</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
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<p>Generating functions. </p>
<p>Definition at line <a class="el" href="a01452_source.html#l02807">2807</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
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<p>Returns the parameter set of the distribution. </p>
<p>Definition at line <a class="el" href="a01452_source.html#l02777">2777</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
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<p>Sets the parameter set of the distribution. </p>
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<p>Definition at line <a class="el" href="a01452_source.html#l02785">2785</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
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<p>Resets the distribution state. </p>
<p>Definition at line <a class="el" href="a01452_source.html#l02763">2763</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
<p>References <a class="el" href="a01452_source.html#l02568">std::gamma_distribution< _RealType >::reset()</a>.</p>
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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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template<typename _RealType = double> </div>
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<td class="memname"><a class="el" href="a00451.html">std::basic_ostream</a><_CharT, _Traits>& operator<< </td>
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<p>Inserts a chi_squared_distribution random number distribution <code>__x</code> into the output stream <code>__os</code>. </p>
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<tr><td class="paramname">__os</td><td>An output stream. </td></tr>
<tr><td class="paramname">__x</td><td>A chi_squared_distribution random number distribution.</td></tr>
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<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>
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<p>Return true if two Chi-squared distributions have the same parameters and the sequences that would be generated are equal. </p>
<p>Definition at line <a class="el" href="a01452_source.html#l02858">2858</a> of file <a class="el" href="a01452_source.html">random.h</a>.</p>
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template<typename _RealType = double> </div>
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<p>Extracts a chi_squared_distribution random number distribution <code>__x</code> from the input stream <code>__is</code>. </p>
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<tr><td class="paramname">__is</td><td>An input stream. </td></tr>
<tr><td class="paramname">__x</td><td>A chi_squared_distribution random number generator engine.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The input stream with <code>__x</code> extracted or in an error state. </dd></dl>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="a01452_source.html">random.h</a></li>
<li><a class="el" href="a01453_source.html">bits/random.tcc</a></li>
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