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26 <div class="refentry">
27 <a name="boost.random.student_t_distribution.param_type"></a><div class="titlepage"></div>
28 <div class="refnamediv">
29 <h2><span class="refentrytitle">Class param_type</span></h2>
30 <p>boost::random::student_t_distribution::param_type</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.student_t_distribution_hpp" title="Header &lt;boost/random/student_t_distribution.hpp&gt;">boost/random/student_t_distribution.hpp</a>&gt;
34
35 </span>
36
37 <span class="keyword">class</span> <a class="link" href="param_type.html" title="Class param_type">param_type</a> <span class="special">{</span>
38 <span class="keyword">public</span><span class="special">:</span>
39   <span class="comment">// types</span>
40   <span class="keyword">typedef</span> <a class="link" href="../student_t_distribution.html" title="Class template student_t_distribution">student_t_distribution</a> <a name="boost.random.student_t_distribution.param_type.distribution_type"></a><span class="identifier">distribution_type</span><span class="special">;</span>
41
42   <span class="comment">// <a class="link" href="param_type.html#boost.random.student_t_distribution.param_typeconstruct-copy-destruct">construct/copy/destruct</a></span>
43   <span class="keyword">explicit</span> <a class="link" href="param_type.html#idp711119312-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="number">0</span><span class="special">)</span><span class="special">;</span>
44
45   <span class="comment">// <a class="link" href="param_type.html#idp711117008-bb">public member functions</a></span>
46   <span class="identifier">RealType</span> <a class="link" href="param_type.html#idp711117568-bb"><span class="identifier">n</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
47
48   <span class="comment">// <a class="link" href="param_type.html#idp711122448-bb">friend functions</a></span>
49   <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> 
50     <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> 
51     <a class="link" href="param_type.html#idp711123008-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="param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
52   <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> 
53     <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> 
54     <a class="link" href="param_type.html#idp711128880-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> <span class="keyword">const</span> <a class="link" href="param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
55   <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="param_type.html#idp711134752-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="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="param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
56   <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="param_type.html#idp711138336-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="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="param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
57 <span class="special">}</span><span class="special">;</span></pre></div>
58 <div class="refsect1">
59 <a name="idp508085040"></a><h2>Description</h2>
60 <div class="refsect2">
61 <a name="idp508085456"></a><h3>
62 <a name="boost.random.student_t_distribution.param_typeconstruct-copy-destruct"></a><code class="computeroutput">param_type</code> 
63         public
64        construct/copy/destruct</h3>
65 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
66 <pre class="literallayout"><span class="keyword">explicit</span> <a name="idp711119312-bb"></a><span class="identifier">param_type</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="number">0</span><span class="special">)</span><span class="special">;</span></pre>
67 <p>Constructs a <code class="computeroutput"><code class="computeroutput"><a class="link" href="param_type.html" title="Class param_type">param_type</a></code></code> with "n" degrees of freedom.</p>
68 <p>Requires: n &gt; 0 </p>
69 </li></ol></div>
70 </div>
71 <div class="refsect2">
72 <a name="idp508097360"></a><h3>
73 <a name="idp711117008-bb"></a><code class="computeroutput">param_type</code> public member functions</h3>
74 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
75 <pre class="literallayout"><span class="identifier">RealType</span> <a name="idp711117568-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>
76 <p>Returns the number of degrees of freedom of the distribution. </p>
77 </li></ol></div>
78 </div>
79 <div class="refsect2">
80 <a name="idp508104688"></a><h3>
81 <a name="idp711122448-bb"></a><code class="computeroutput">param_type</code> friend functions</h3>
82 <div class="orderedlist"><ol class="orderedlist" type="1">
83 <li class="listitem">
84 <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> 
85   <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> 
86   <a name="idp711123008-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> 
87              <span class="keyword">const</span> <a class="link" href="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>
88 <p>Writes a <code class="computeroutput"><code class="computeroutput"><a class="link" href="param_type.html" title="Class param_type">param_type</a></code></code> to a <code class="computeroutput">std::ostream</code>. </p>
89 </li>
90 <li class="listitem">
91 <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> 
92   <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> 
93   <a name="idp711128880-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> 
94              <span class="keyword">const</span> <a class="link" href="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>
95 <p>Reads a <code class="computeroutput"><code class="computeroutput"><a class="link" href="param_type.html" title="Class param_type">param_type</a></code></code> from a <code class="computeroutput">std::istream</code>. </p>
96 </li>
97 <li class="listitem">
98 <pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp711134752-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span> lhs<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
99 <p>Returns true if the two sets of parameters are the same. </p>
100 </li>
101 <li class="listitem">
102 <pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp711138336-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span> lhs<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
103 <p>Returns true if the two sets of parameters are the different. </p>
104 </li>
105 </ol></div>
106 </div>
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