org.apache.commons.numbers.gamma

Class LogBeta

java.lang.Object

org.apache.commons.numbers.gamma.LogBeta

public final class LogBeta
extends Object

Computes \( log_e \Beta(p, q) \).

This class is immutable.

Method Summary

Modifier and Type	Method and Description
static double	value(double p, double q) Returns the value of log B(p, q) for 0 ≤ x ≤ 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 ≤ x ≤ 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(Beta(p, q)), NaN if p <= 0 or q <= 0.