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author | dwinter |
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date | Tue, 04 Jan 2011 10:00:53 +0100 |
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Math - The Commons Math User Guide - Special Functions</title> <style type="text/css" media="all"> @import url("../css/maven-base.css"); @import url("../css/maven-theme.css"); @import url("../css/site.css"); </style> <link rel="stylesheet" href="../css/print.css" type="text/css" media="print" /> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /> </head> <body class="composite"> <div id="banner"> <span id="bannerLeft"> Commons Math User Guide </span> <div class="clear"> <hr/> </div> </div> <div id="breadcrumbs"> <div class="xright"> </div> <div class="clear"> <hr/> </div> </div> <div id="leftColumn"> <div id="navcolumn"> <h5>User Guide</h5> <ul> <li class="none"> <a href="../userguide/index.html">Contents</a> </li> <li class="none"> <a href="../userguide/overview.html">Overview</a> </li> <li class="none"> <a href="../userguide/stat.html">Statistics</a> </li> <li class="none"> <a href="../userguide/random.html">Data Generation</a> </li> <li class="none"> <a href="../userguide/linear.html">Linear Algebra</a> </li> <li class="none"> <a href="../userguide/analysis.html">Numerical Analysis</a> </li> <li class="none"> <strong>Special Functions</strong> </li> <li class="none"> <a href="../userguide/utilities.html">Utilities</a> </li> <li class="none"> <a href="../userguide/complex.html">Complex Numbers</a> </li> <li class="none"> <a href="../userguide/distribution.html">Distributions</a> </li> <li class="none"> <a href="../userguide/fraction.html">Fractions</a> </li> <li class="none"> <a href="../userguide/transform.html">Transform Methods</a> </li> <li class="none"> <a href="../userguide/geometry.html">3D Geometry</a> </li> <li class="none"> <a href="../userguide/optimization.html">Optimization</a> </li> <li class="none"> <a href="../userguide/ode.html">Ordinary Differential Equations</a> </li> <li class="none"> <a href="../userguide/genetics.html">Genetic Algorithms</a> </li> </ul> <a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"> <img alt="Built by Maven" src="../images/logos/maven-feather.png"></img> </a> </div> </div> <div id="bodyColumn"> <div id="contentBox"> <div class="section"><h2><a name="a5_Special_Functions"></a>5 Special Functions</h2> <div class="section"><h3><a name="a5.1_Overview"></a>5.1 Overview</h3> <p> The special functions portion of Commons-Math contains several useful functions not provided by <code>java.lang.Math</code>. These functions mostly serve as building blocks for other portions of Commons-Math but, as others may find them useful as stand-alone methods, these special functions were included as part of the Commons-Math public API. </p> </div> <div class="section"><h3><a name="a5.2_Erf_functions"></a>5.2 Erf functions</h3> <p><code>org.apache.commons.math.special.Erf</code> contains several useful functions involving the Error Function, Erf. <table class="bodyTable"><tr class="a"><th>Function</th> <th>Method</th> <th>Reference</th> </tr> <tr class="b"><td>Error Function</td> <td>erf</td> <td>See <a href="http://mathworld.wolfram.com/Erf.html" class="externalLink">Erf</a> from MathWorld</td> </tr> </table> </p> </div> <div class="section"><h3><a name="a5.3_Gamma_functions"></a>5.3 Gamma functions</h3> <p><code>org.apache.commons.math.special.Gamma</code> contains several useful functions involving the Gamma Function. <table class="bodyTable"><tr class="a"><th>Function</th> <th>Method</th> <th>Reference</th> </tr> <tr class="b"><td>Log Gamma</td> <td>logGamma</td> <td>See <a href="http://mathworld.wolfram.com/GammaFunction.html" class="externalLink">Gamma Function</a> from MathWorld</td> </tr> <tr class="a"><td>Regularized Gamma</td> <td>regularizedGammaP</td> <td>See <a href="http://mathworld.wolfram.com/RegularizedGammaFunction.html" class="externalLink">Regularized Gamma Function</a> from MathWorld</td> </tr> </table> </p> </div> <div class="section"><h3><a name="a5.4_Beta_funtions"></a>5.4 Beta funtions</h3> <p><code>org.apache.commons.math.special.Beta</code> contains several useful functions involving the Beta Function. <table class="bodyTable"><tr class="b"><th>Function</th> <th>Method</th> <th>Reference</th> </tr> <tr class="a"><td>Log Beta</td> <td>logBeta</td> <td>See <a href="http://mathworld.wolfram.com/BetaFunction.html" class="externalLink">Beta Function</a> from MathWorld</td> </tr> <tr class="b"><td>Regularized Beta</td> <td>regularizedBeta</td> <td>See <a href="http://mathworld.wolfram.com/RegularizedBetaFunction.html" class="externalLink">Regularized Beta Function</a> from MathWorld</td> </tr> </table> </p> </div> </div> </div> </div> <div class="clear"> <hr/> </div> <div id="footer"> <div class="xright">© 2003-2010 </div> <div class="clear"> <hr/> </div> </div> </body> </html>