Catalano.Math.Functions

Class Gamma

java.lang.Object

Catalano.Math.Functions.Gamma

public final class Gamma
extends java.lang.Object

Set of special mathematic functions.

Field Summary

Fields

Modifier and Type	Field and Description
static double	GammaMax Maximum gamma on the machine.

Method Summary

Modifier and Type	Method and Description
static double	ComplementedIncomplete(double a, double x) Complemented incomplete gamma function.
static double	Digamma(double x) Digamma function.
static double	Function(double x) Gamma function of the specified value.
static double	Incomplete(double a, double x) Incomplete gamma function.
static double	Log(double x) Natural logarithm of gamma function.
static double	LowerIncomplete(double a, double x)
static double	Stirling(double x) Gamma function as computed by Stirling's formula.

Methods inherited from class java.lang.Object

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

Field Detail

GammaMax

public static final double GammaMax

Maximum gamma on the machine.

See Also:

Constant Field Values

Method Detail

Function

public static double Function(double x)

Gamma function of the specified value.

Parameters:

x - Value.

Returns:

Result.

LowerIncomplete

public static double LowerIncomplete(double a,
                                     double x)

Stirling

public static double Stirling(double x)

Gamma function as computed by Stirling's formula.

Parameters:

x - Value.

Returns:

Result.

Digamma

public static double Digamma(double x)

Digamma function.

Parameters:

x - Value.

Returns:

Result.

ComplementedIncomplete

public static double ComplementedIncomplete(double a,
                                            double x)

Complemented incomplete gamma function.

Parameters:

a - Value.

x - Value.

Returns:

Result.

Incomplete

public static double Incomplete(double a,
                                double x)

Incomplete gamma function.

Parameters:

a - Value.

x - Value.

Returns:

Result.

Log

public static double Log(double x)

Natural logarithm of gamma function.

Parameters:

x - Value.

Returns:

Result.