com.numericalmethod.suanshu.analysis.function.special.gamma

Enum LogGamma.Method

java.lang.Object

java.lang.Enum<LogGamma.Method>

com.numericalmethod.suanshu.analysis.function.special.gamma.LogGamma.Method

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<LogGamma.Method>

Enclosing class:

LogGamma

public static enum LogGamma.Method
extends java.lang.Enum<LogGamma.Method>

the methods available to compute \(\log (\Gamma(z))\)

Enum Constant Summary

Enum Constants

Enum Constant and Description
LANCZOS Lanczos approximation.
LANCZOS_QUICK Quick Lanczos approximation, where all computations are done in double precision.

Method Summary

Modifier and Type	Method and Description
static LogGamma.Method	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static LogGamma.Method[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

LANCZOS

public static final LogGamma.Method LANCZOS

Lanczos approximation.

This accuracy can be made arbitrary precise. Yet, the computations can be time-consuming.

LANCZOS_QUICK

public static final LogGamma.Method LANCZOS_QUICK

Quick Lanczos approximation, where all computations are done in double precision.

Method Detail

values

public static LogGamma.Method[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (LogGamma.Method c : LogGamma.Method.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static LogGamma.Method valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null