com.numericalmethod.suanshu.stats.random.univariate.exp

Class Ziggurat2000Exp

java.lang.Object

com.numericalmethod.suanshu.stats.random.univariate.exp.Ziggurat2000Exp

All Implemented Interfaces:

RandomExpGenerator, RandomNumberGenerator, java.io.Serializable

public class Ziggurat2000Exp
extends java.lang.Object
implements RandomExpGenerator

This implements the ziggurat algorithm to sample from the exponential distribution.

See Also:

• "George Marsaglia, Wai Wan Tsang, "The ZigguratExp Method for Generating Random Variables," Journal of Statistical Software 5 (8), 2000."
• a C implementation of the Ziggurat algorithm
• another C implementation of the Ziggurat algorithm

, Serialized Form

Constructor Summary

Constructors

Constructor and Description
Ziggurat2000Exp()

Method Summary

Modifier and Type	Method and Description
double	nextDouble() Get the next random double.
void	seed(long... seeds) Seed the random number generator to produce repeatable sequences.

Methods inherited from class java.lang.Object

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

Constructor Detail

Ziggurat2000Exp

public Ziggurat2000Exp()

Method Detail

seed

public void seed(long... seeds)

Description copied from interface: RandomNumberGenerator

Seed the random number generator to produce repeatable sequences.

Specified by:

seed in interface RandomNumberGenerator

Parameters:

seeds - the seeds

nextDouble

public double nextDouble()

Description copied from interface: RandomNumberGenerator

Get the next random double.

Specified by:

nextDouble in interface RandomNumberGenerator

Returns:

the next random number