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   5 <title>Class template chi_squared_distribution</title>
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  26 <div class="refentry">
  27 <a name="boost.random.chi_squared_distribution"></a><div class="titlepage"></div>
  28 <div class="refnamediv">
  29 <h2><span class="refentrytitle">Class template chi_squared_distribution</span></h2>
  30 <p>boost::random::chi_squared_distribution</p>
  31 </div>
  32 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  33 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../boost_random/reference.html#header.boost.random.chi_squared_distribution_hpp" title="Header &lt;boost/random/chi_squared_distribution.hpp&gt;">boost/random/chi_squared_distribution.hpp</a>&gt;
  34
  35 </span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> RealType <span class="special">=</span> <span class="keyword">double</span><span class="special">&gt;</span>
  36 <span class="keyword">class</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">{</span>
  37 <span class="keyword">public</span><span class="special">:</span>
  38   <span class="comment">// types</span>
  39   <span class="keyword">typedef</span> <span class="identifier">RealType</span> <a name="boost.random.chi_squared_distribution.result_type"></a><span class="identifier">result_type</span><span class="special">;</span>
  40   <span class="keyword">typedef</span> <span class="identifier">RealType</span> <a name="boost.random.chi_squared_distribution.input_type"></a><span class="identifier">input_type</span><span class="special">;</span>
  41
  42   <span class="comment">// member classes/structs/unions</span>
  43
  44   <span class="keyword">class</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">{</span>
  45   <span class="keyword">public</span><span class="special">:</span>
  46     <span class="comment">// types</span>
  47     <span class="keyword">typedef</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <a class="link" href="chi_squared_distribution/param_type.html#boost.random.chi_squared_distribution.param_type.distribution_type"><span class="identifier">distribution_type</span></a><span class="special">;</span>
  48
  49     <span class="comment">// <a class="link" href="chi_squared_distribution/param_type.html#boost.random.chi_squared_distribution.param_typeconstruct-copy-destruct">construct/copy/destruct</a></span>
  50     <span class="keyword">explicit</span> <a class="link" href="chi_squared_distribution/param_type.html#idp708458256-bb"><span class="identifier">param_type</span></a><span class="special">(</span><span class="identifier">RealType</span> <span class="special">=</span> <span class="number">1</span><span class="special">)</span><span class="special">;</span>
  51
  52     <span class="comment">// <a class="link" href="chi_squared_distribution/param_type.html#idp708455536-bb">public member functions</a></span>
  53     <span class="identifier">RealType</span> <a class="link" href="chi_squared_distribution/param_type.html#idp708456096-bb"><span class="identifier">n</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  54
  55     <span class="comment">// <a class="link" href="chi_squared_distribution/param_type.html#idp708461728-bb">friend functions</a></span>
  56     <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span>
  57       <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
  58       <a class="link" href="chi_squared_distribution/param_type.html#idp708462288-bb"><span class="keyword">operator</span><span class="special">&lt;&lt;</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  59     <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span>
  60       <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
  61       <a class="link" href="chi_squared_distribution/param_type.html#idp708467312-bb"><span class="keyword">operator</span><span class="special">&gt;&gt;</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  62     <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="chi_squared_distribution/param_type.html#idp708472176-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  63     <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="chi_squared_distribution/param_type.html#idp708475744-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  64   <span class="special">}</span><span class="special">;</span>
  65
  66   <span class="comment">// <a class="link" href="chi_squared_distribution.html#boost.random.chi_squared_distributionconstruct-copy-destruct">construct/copy/destruct</a></span>
  67   <span class="keyword">explicit</span> <a class="link" href="chi_squared_distribution.html#idp708500144-bb"><span class="identifier">chi_squared_distribution</span></a><span class="special">(</span><span class="identifier">RealType</span> <span class="special">=</span> <span class="number">1</span><span class="special">)</span><span class="special">;</span>
  68   <span class="keyword">explicit</span> <a class="link" href="chi_squared_distribution.html#idp708503744-bb"><span class="identifier">chi_squared_distribution</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  69
  70   <span class="comment">// <a class="link" href="chi_squared_distribution.html#idp708481168-bb">public member functions</a></span>
  71   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> URNG<span class="special">&gt;</span> <span class="identifier">RealType</span> <a class="link" href="chi_squared_distribution.html#idp708481728-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">URNG</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  72   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> URNG<span class="special">&gt;</span>
  73     <span class="identifier">RealType</span> <a class="link" href="chi_squared_distribution.html#idp708484592-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">URNG</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  74   <span class="identifier">RealType</span> <a class="link" href="chi_squared_distribution.html#idp708489344-bb"><span class="identifier">n</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  75   <span class="identifier">RealType</span> <a class="link" href="chi_squared_distribution.html#idp708491344-bb"><span class="identifier">min</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  76   <span class="identifier">RealType</span> <a class="link" href="chi_squared_distribution.html#idp708492928-bb"><span class="identifier">max</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  77   <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <a class="link" href="chi_squared_distribution.html#idp708494512-bb"><span class="identifier">param</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  78   <span class="keyword">void</span> <a class="link" href="chi_squared_distribution.html#idp708496208-bb"><span class="identifier">param</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  79   <span class="keyword">void</span> <a class="link" href="chi_squared_distribution.html#idp708498624-bb"><span class="identifier">reset</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  80
  81   <span class="comment">// <a class="link" href="chi_squared_distribution.html#idp708506752-bb">friend functions</a></span>
  82   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span>
  83     <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
  84     <a class="link" href="chi_squared_distribution.html#idp708507312-bb"><span class="keyword">operator</span><span class="special">&lt;&lt;</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span>
  85                <span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  86   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span>
  87     <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
  88     <a class="link" href="chi_squared_distribution.html#idp708512352-bb"><span class="keyword">operator</span><span class="special">&gt;&gt;</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span>
  89                <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  90   <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="chi_squared_distribution.html#idp708517232-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span><span class="special">,</span>
  91                          <span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  92   <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="chi_squared_distribution.html#idp708520896-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span><span class="special">,</span>
  93                          <span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  94 <span class="special">}</span><span class="special">;</span></pre></div>
  95 <div class="refsect1">
  96 <a name="idp491317088"></a><h2>Description</h2>
  97 <p>The chi squared distribution is a real valued distribution with one parameter, <code class="computeroutput">n</code>. The distribution produces values &gt; 0.</p>
  98 <p>The distribution function is <span class="inlinemediaobject"><img src="../../images/random//form_3.png"></span>. </p>
  99 <div class="refsect2">
 100 <a name="idp491321392"></a><h3>
 101 <a name="boost.random.chi_squared_distributionconstruct-copy-destruct"></a><code class="computeroutput">chi_squared_distribution</code>
 102         public
 103        construct/copy/destruct</h3>
 104 <div class="orderedlist"><ol class="orderedlist" type="1">
 105 <li class="listitem">
 106 <pre class="literallayout"><span class="keyword">explicit</span> <a name="idp708500144-bb"></a><span class="identifier">chi_squared_distribution</span><span class="special">(</span><span class="identifier">RealType</span> n <span class="special">=</span> <span class="number">1</span><span class="special">)</span><span class="special">;</span></pre>
 107 <p>Construct a <code class="computeroutput"><code class="computeroutput"><a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a></code></code> object. <code class="computeroutput">n</code> is the parameter of the distribution.</p>
 108 <p>Requires: t &gt;=0 &amp;&amp; 0 &lt;= p &lt;= 1 </p>
 109 </li>
 110 <li class="listitem">
 111 <pre class="literallayout"><span class="keyword">explicit</span> <a name="idp708503744-bb"></a><span class="identifier">chi_squared_distribution</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span> param<span class="special">)</span><span class="special">;</span></pre>
 112 <p>Construct an <code class="computeroutput"><code class="computeroutput"><a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a></code></code> object from the parameters. </p>
 113 </li>
 114 </ol></div>
 115 </div>
 116 <div class="refsect2">
 117 <a name="idp491341568"></a><h3>
 118 <a name="idp708481168-bb"></a><code class="computeroutput">chi_squared_distribution</code> public member functions</h3>
 119 <div class="orderedlist"><ol class="orderedlist" type="1">
 120 <li class="listitem">
 121 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> URNG<span class="special">&gt;</span> <span class="identifier">RealType</span> <a name="idp708481728-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">URNG</span> <span class="special">&amp;</span> urng<span class="special">)</span><span class="special">;</span></pre>
 122 <p>Returns a random variate distributed according to the chi squared distribution. </p>
 123 </li>
 124 <li class="listitem">
 125 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> URNG<span class="special">&gt;</span>
 126   <span class="identifier">RealType</span> <a name="idp708484592-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">URNG</span> <span class="special">&amp;</span> urng<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span> param<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 127 <p>Returns a random variate distributed according to the chi squared distribution with parameters specified by <code class="computeroutput">param</code>. </p>
 128 </li>
 129 <li class="listitem">
 130 <pre class="literallayout"><span class="identifier">RealType</span> <a name="idp708489344-bb"></a><span class="identifier">n</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 131 <p>Returns the <code class="computeroutput">n</code> parameter of the distribution. </p>
 132 </li>
 133 <li class="listitem">
 134 <pre class="literallayout"><span class="identifier">RealType</span> <a name="idp708491344-bb"></a><span class="identifier">min</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 135 <p>Returns the smallest value that the distribution can produce. </p>
 136 </li>
 137 <li class="listitem">
 138 <pre class="literallayout"><span class="identifier">RealType</span> <a name="idp708492928-bb"></a><span class="identifier">max</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 139 <p>Returns the largest value that the distribution can produce. </p>
 140 </li>
 141 <li class="listitem">
 142 <pre class="literallayout"><a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <a name="idp708494512-bb"></a><span class="identifier">param</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 143 <p>Returns the parameters of the distribution. </p>
 144 </li>
 145 <li class="listitem">
 146 <pre class="literallayout"><span class="keyword">void</span> <a name="idp708496208-bb"></a><span class="identifier">param</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span> param<span class="special">)</span><span class="special">;</span></pre>
 147 <p>Sets parameters of the distribution. </p>
 148 </li>
 149 <li class="listitem">
 150 <pre class="literallayout"><span class="keyword">void</span> <a name="idp708498624-bb"></a><span class="identifier">reset</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
 151 <p>Effects: Subsequent uses of the distribution do not depend on values produced by any engine prior to invoking reset. </p>
 152 </li>
 153 </ol></div>
 154 </div>
 155 <div class="refsect2">
 156 <a name="idp491400832"></a><h3>
 157 <a name="idp708506752-bb"></a><code class="computeroutput">chi_squared_distribution</code> friend functions</h3>
 158 <div class="orderedlist"><ol class="orderedlist" type="1">
 159 <li class="listitem">
 160 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span>
 161   <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
 162   <a name="idp708507312-bb"></a><span class="keyword">operator</span><span class="special">&lt;&lt;</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span> os<span class="special">,</span>
 163              <span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span> c2d<span class="special">)</span><span class="special">;</span></pre>
 164 <p>Writes the parameters of the distribution to a <code class="computeroutput">std::ostream</code>. </p>
 165 </li>
 166 <li class="listitem">
 167 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span>
 168   <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
 169   <a name="idp708512352-bb"></a><span class="keyword">operator</span><span class="special">&gt;&gt;</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span> is<span class="special">,</span>
 170              <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span> c2d<span class="special">)</span><span class="special">;</span></pre>
 171 <p>Reads the parameters of the distribution from a <code class="computeroutput">std::istream</code>. </p>
 172 </li>
 173 <li class="listitem">
 174 <pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp708517232-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span> lhs<span class="special">,</span>
 175                        <span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
 176 <p>Returns true if the two distributions will produce the same sequence of values, given equal generators. </p>
 177 </li>
 178 <li class="listitem">
 179 <pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp708520896-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span> lhs<span class="special">,</span>
 180                        <span class="keyword">const</span> <a class="link" href="chi_squared_distribution.html" title="Class template chi_squared_distribution">chi_squared_distribution</a> <span class="special">&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
 181 <p>Returns true if the two distributions could produce different sequences of values, given equal generators. </p>
 182 </li>
 183 </ol></div>
 184 </div>
 185 </div>
 186 </div>
 187 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 188 <td align="left"></td>
 189 <td align="right"><div class="copyright-footer">Copyright &#169; 2000-2005 Jens Maurer<br>Copyright &#169; 2009, 2010 Steven Watanabe<p>
 190         Distributed under the Boost Software License, Version 1.0. (See accompanying
 191         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 192       </p>
 193 </div></td>
 194 </tr></table>
 195 <hr>
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