org.apache.commons.numbers.gamma

Class Gamma

java.lang.Object

org.apache.commons.numbers.gamma.Gamma

public final class Gamma
extends Object

Gamma function.

The gamma function can be seen to extend the factorial function to cover real and complex numbers, but with its argument shifted by -1. This implementation supports real numbers.

This class is immutable.

Method Summary

Modifier and Type	Method and Description
static double	value(double x) Computes the value of \( \Gamma(x) \).

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 x)

Computes the value of \( \Gamma(x) \).

Based on the NSWC Library of Mathematics Subroutines double precision implementation, DGAMMA.

Parameters:

x - Argument.

Returns:

\( \Gamma(x) \)