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| <a name="boost.normal_distribution"></a><div class="titlepage"></div> |
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| <h2><span class="refentrytitle">Class template normal_distribution</span></h2> |
| <p>boost::normal_distribution</p> |
| </div> |
| <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> |
| <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../boost_random/reference.html#header.boost.random.normal_distribution_hpp" title="Header <boost/random/normal_distribution.hpp>">boost/random/normal_distribution.hpp</a>> |
| |
| </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> RealType <span class="special">=</span> <span class="keyword">double</span><span class="special">></span> |
| <span class="keyword">class</span> <a class="link" href="normal_distribution.html" title="Class template normal_distribution">normal_distribution</a> <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="comment">// types</span> |
| <span class="keyword">typedef</span> <span class="identifier">RealType</span> <a name="boost.normal_distribution.input_type"></a><span class="identifier">input_type</span><span class="special">;</span> |
| <span class="keyword">typedef</span> <span class="identifier">RealType</span> <a name="boost.normal_distribution.result_type"></a><span class="identifier">result_type</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="normal_distribution.html#boost.normal_distributionconstruct-copy-destruct">construct/copy/destruct</a></span> |
| <a class="link" href="normal_distribution.html#id1147281-bb"><span class="identifier">normal_distribution</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">result_type</span> <span class="special">&</span> <span class="special">=</span> <span class="identifier">result_type</span><span class="special">(</span><span class="number">0</span><span class="special">)</span><span class="special">,</span> |
| <span class="keyword">const</span> <span class="identifier">result_type</span> <span class="special">&</span> <span class="special">=</span> <span class="identifier">result_type</span><span class="special">(</span><span class="number">1</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> |
| <a class="link" href="normal_distribution.html#id1147313-bb"><span class="identifier">normal_distribution</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="normal_distribution.html" title="Class template normal_distribution">normal_distribution</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="normal_distribution.html#id1147225-bb">public member functions</a></span> |
| <span class="identifier">RealType</span> <a class="link" href="normal_distribution.html#id1147229-bb"><span class="identifier">mean</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="identifier">RealType</span> <a class="link" href="normal_distribution.html#id1147241-bb"><span class="identifier">sigma</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="keyword">void</span> <a class="link" href="normal_distribution.html#id1147253-bb"><span class="identifier">reset</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Engine<span class="special">></span> <span class="identifier">result_type</span> <a class="link" href="normal_distribution.html#id1147260-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">Engine</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <span class="special">}</span><span class="special">;</span></pre></div> |
| <div class="refsect1"> |
| <a name="id2501219"></a><h2>Description</h2> |
| <p>Instantiations of class template normal_distribution model a <a class="link" href="../boost_random/reference.html#boost_random.reference.concepts.random_distribution" title="Random Distribution">random distribution</a> . Such a distribution produces random numbers <code class="computeroutput">x</code> distributed with probability density function <span class="inlinemediaobject"><img src="../images/random/form_8.png"></span>, where mean and sigma are the parameters of the distribution. </p> |
| <div class="refsect2"> |
| <a name="id2501264"></a><h3> |
| <a name="boost.normal_distributionconstruct-copy-destruct"></a><code class="computeroutput">normal_distribution</code> |
| public |
| construct/copy/destruct</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"> |
| <pre class="literallayout"><a name="id1147281-bb"></a><span class="identifier">normal_distribution</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">result_type</span> <span class="special">&</span> mean_arg <span class="special">=</span> <span class="identifier">result_type</span><span class="special">(</span><span class="number">0</span><span class="special">)</span><span class="special">,</span> |
| <span class="keyword">const</span> <span class="identifier">result_type</span> <span class="special">&</span> sigma_arg <span class="special">=</span> <span class="identifier">result_type</span><span class="special">(</span><span class="number">1</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre> |
| <p>Constructs a normal_distribution object. <code class="computeroutput">mean</code> and <code class="computeroutput">sigma</code> are the parameters for the distribution.</p> |
| <p>Requires: sigma > 0 </p> |
| </li> |
| <li class="listitem"><pre class="literallayout"><a name="id1147313-bb"></a><span class="identifier">normal_distribution</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="normal_distribution.html" title="Class template normal_distribution">normal_distribution</a> <span class="special">&</span> other<span class="special">)</span><span class="special">;</span></pre></li> |
| </ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="id2501465"></a><h3> |
| <a name="id1147225-bb"></a><code class="computeroutput">normal_distribution</code> public member functions</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="identifier">RealType</span> <a name="id1147229-bb"></a><span class="identifier">mean</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> |
| <p>Returns: The "mean" parameter of the distribution. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="identifier">RealType</span> <a name="id1147241-bb"></a><span class="identifier">sigma</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> |
| <p>Returns: The "sigma" parameter of the distribution. </p> |
| </li> |
| <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="id1147253-bb"></a><span class="identifier">reset</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li> |
| <li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Engine<span class="special">></span> <span class="identifier">result_type</span> <a name="id1147260-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">Engine</span> <span class="special">&</span> eng<span class="special">)</span><span class="special">;</span></pre></li> |
| </ol></div> |
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| <td align="right"><div class="copyright-footer">Copyright © 2000 -2005 Jens Maurer, 2009 Steven Watanabe<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 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>) |
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