| <html> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> |
| <title>Class template lognormal_distribution</title> |
| <link rel="stylesheet" href="../../../doc/src/boostbook.css" type="text/css"> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> |
| <link rel="home" href="../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> |
| <link rel="up" href="../boost_random/reference.html#header.boost.random.lognormal_distribution_hpp" title="Header <boost/random/lognormal_distribution.hpp>"> |
| <link rel="prev" href="random/linear_feedback_shift.html" title="Class template linear_feedback_shift"> |
| <link rel="next" href="random/mersenne_twister.html" title="Class template mersenne_twister"> |
| </head> |
| <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> |
| <table cellpadding="2" width="100%"><tr> |
| <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../boost.png"></td> |
| <td align="center"><a href="../../../index.html">Home</a></td> |
| <td align="center"><a href="../../../libs/libraries.htm">Libraries</a></td> |
| <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> |
| <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> |
| <td align="center"><a href="../../../more/index.htm">More</a></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="random/linear_feedback_shift.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost_random/reference.html#header.boost.random.lognormal_distribution_hpp"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="random/mersenne_twister.html"><img src="../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| <div class="refentry"> |
| <a name="boost.lognormal_distribution"></a><div class="titlepage"></div> |
| <div class="refnamediv"> |
| <h2><span class="refentrytitle">Class template lognormal_distribution</span></h2> |
| <p>boost::lognormal_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.lognormal_distribution_hpp" title="Header <boost/random/lognormal_distribution.hpp>">boost/random/lognormal_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="lognormal_distribution.html" title="Class template lognormal_distribution">lognormal_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> <a class="link" href="normal_distribution.html" title="Class template normal_distribution">normal_distribution</a><span class="special"><</span> <span class="identifier">RealType</span> <span class="special">></span><span class="special">::</span><span class="identifier">input_type</span> <a name="boost.lognormal_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.lognormal_distribution.result_type"></a><span class="identifier">result_type</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="lognormal_distribution.html#boost.lognormal_distributionconstruct-copy-destruct">construct/copy/destruct</a></span> |
| <a class="link" href="lognormal_distribution.html#id1146563-bb"><span class="identifier">lognormal_distribution</span></a><span class="special">(</span><span class="identifier">result_type</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="identifier">result_type</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> |
| |
| <span class="comment">// <a class="link" href="lognormal_distribution.html#id1146516-bb">public member functions</a></span> |
| <span class="identifier">RealType</span> <a class="link" href="lognormal_distribution.html#id1146520-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="lognormal_distribution.html#id1146528-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="lognormal_distribution.html#id1146535-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="lognormal_distribution.html#id1146543-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="id2497091"></a><h2>Description</h2> |
| <p>Instantiations of class template lognormal_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 with <span class="inlinemediaobject"><img src="../images/random/form_5.png"></span> for x > 0, where <span class="inlinemediaobject"><img src="../images/random/form_6.png"></span> and <span class="inlinemediaobject"><img src="../images/random/form_7.png"></span>. </p> |
| <div class="refsect2"> |
| <a name="id2497173"></a><h3> |
| <a name="boost.lognormal_distributionconstruct-copy-destruct"></a><code class="computeroutput">lognormal_distribution</code> |
| public |
| construct/copy/destruct</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> |
| <pre class="literallayout"><a name="id1146563-bb"></a><span class="identifier">lognormal_distribution</span><span class="special">(</span><span class="identifier">result_type</span> mean_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="identifier">result_type</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 lognormal_distribution. <code class="computeroutput">mean</code> and <code class="computeroutput">sigma</code> are the mean and standard deviation of the lognormal distribution. </p> |
| </li></ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="id2497300"></a><h3> |
| <a name="id1146516-bb"></a><code class="computeroutput">lognormal_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="id1146520-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></li> |
| <li class="listitem"><pre class="literallayout"><span class="identifier">RealType</span> <a name="id1146528-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></li> |
| <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="id1146535-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="id1146543-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> |
| </div> |
| </div> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <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>) |
| </p> |
| </div></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="random/linear_feedback_shift.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost_random/reference.html#header.boost.random.lognormal_distribution_hpp"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="random/mersenne_twister.html"><img src="../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| </body> |
| </html> |
