Package org.apache.commons.numbers.gamma

Class LogBeta

java.lang.Object

org.apache.commons.numbers.gamma.LogBeta

public final class LogBeta
extends Object

Computes $lo{g}_{e}B(p,q)$.

This class is immutable.

Method Summary

Modifier and Type	Method	Description
static double	value(double p, double q)	Returns the value of $\log B(p,q)$ for $0\le x\le 1$ and $p,q>0$.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

value

public static double value(double p,
                           double q)

Returns the value of $\log B(p,q)$ for $0\le x\le 1$ and $p,q>0$. Based on the NSWC Library of Mathematics Subroutines implementation, DBETLN.

Parameters:

p - First argument.

q - Second argument.

Returns:

the value of $\log B(p,q)$, or NaN if p <= 0 or q <= 0.