math.rng

Class MersenneTwister64

java.lang.Object

math.rng.AbstractRng64

math.rng.MersenneTwister64

All Implemented Interfaces:

PseudoRandom, PseudoRandomStream

public class MersenneTwister64
extends AbstractRng64

64-bit Mersenne Twister. This generator has a period of 2¹⁹⁹³⁷ − 1. It is 3 to 7 times faster than Random depending on the kind of output you want. Mersenne Twister (mostly in its 32-bit incarnation) has been the de facto standard PRNG for scientific applications in the last two decades.

The recursion is similar to the 32-bit Mersenne Twister but different, so the output is totally different from the 32-bit version.

This is a port of the "mt19937-64.c" C code (2004/9/29 version).

See: The Mersenne Twister Home Page

Field Summary

Fields inherited from class math.rng.AbstractRng64

DOUBLE_NORM, FLOAT_NORM, nextGaussian, unused

Constructor Summary

Constructors

Constructor and Description
MersenneTwister64()
MersenneTwister64(long seed)
MersenneTwister64(long[] seedArray)

Method Summary

Modifier and Type	Method and Description
static PseudoRandom	getDefault()
long	nextLong()

Methods inherited from class math.rng.AbstractRng64

beta, beta, cauchy, cauchy, chiSquare, chiSquare, doubles, doubles, doubles, doubles, exponential, exponential, gamma, gamma, getAlgorithm, getSeed, ints, ints, ints, ints, logNormal, logNormal, longs, longs, longs, longs, next, nextBoolean, nextBytes, nextDouble, nextDouble, nextDoubles, nextFloat, nextFloat, nextGaussian, nextGaussian, nextInt, nextInt, nextInt, nextLong, nextLong, nextLongs, normal, normal, saveSeed, saveSeed, studentT, studentT, weibull, weibull

Methods inherited from class java.lang.Object

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

Constructor Detail

MersenneTwister64

public MersenneTwister64()

MersenneTwister64

public MersenneTwister64(long seed)

MersenneTwister64

public MersenneTwister64(long[] seedArray)

Method Detail

nextLong

public final long nextLong()

Specified by:

nextLong in interface PseudoRandom

Specified by:

nextLong in class AbstractRng64

getDefault

public static PseudoRandom getDefault()