Package jdistlib.rng

Class RandomCMWC

java.lang.Object

java.util.Random

jdistlib.rng.RandomEngine

jdistlib.rng.RandomCMWC

All Implemented Interfaces:

Serializable, RandomGenerator

public class RandomCMWC
extends RandomEngine

Implementation of CMWC4096 (Complementary-multiply-with-carry) random number generator by George Marsaglia. The period is approximately 2^131086.

Original post

Paper: Marsaglia, George. 2003. Random number generators. Journal of Modern Applied Statistical Methods, 2(1): 2-13. (link)

The 64-bit seed is expanded into the full 4096-word state using SplitMix64. The initial carry is 362436. Corrected unsigned arithmetic changes streams from older releases; serialized states from the broken implementation are rejected.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.random.RandomGenerator

RandomGenerator.ArbitrarilyJumpableGenerator, RandomGenerator.JumpableGenerator, RandomGenerator.LeapableGenerator, RandomGenerator.SplittableGenerator, RandomGenerator.StreamableGenerator

Field Summary

Fields inherited from class jdistlib.rng.RandomEngine

mSeed

Constructor Summary

Constructors

Constructor	Description
RandomCMWC()
RandomCMWC(long seed)

Method Summary

Modifier and Type	Method	Description
RandomCMWC	clone()
double	nextDouble()
float	nextFloat()
double	nextGaussian()
int	nextInt()
long	nextLong()
void	setSeed(long seed)

Methods inherited from class jdistlib.rng.RandomEngine

getSeed, next, nextInt, nextLong, random

Methods inherited from class java.util.Random

doubles, doubles, doubles, doubles, from, ints, ints, ints, ints, longs, longs, longs, longs, nextBoolean, nextBytes

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.random.RandomGenerator

isDeprecated, nextDouble, nextDouble, nextExponential, nextFloat, nextFloat, nextGaussian, nextInt, nextLong

Constructor Details

RandomCMWC

public RandomCMWC()

RandomCMWC

public RandomCMWC(long seed)

Method Details

setSeed

public void setSeed(long seed)

Overrides:

setSeed in class RandomEngine

nextInt

public int nextInt()

Specified by:

nextInt in interface RandomGenerator

Specified by:

nextInt in class RandomEngine

nextLong

public long nextLong()

Specified by:

nextLong in interface RandomGenerator

Specified by:

nextLong in class RandomEngine

nextDouble

public double nextDouble()

Specified by:

nextDouble in interface RandomGenerator

Specified by:

nextDouble in class RandomEngine

nextFloat

public float nextFloat()

Specified by:

nextFloat in interface RandomGenerator

Specified by:

nextFloat in class RandomEngine

nextGaussian

public double nextGaussian()

Specified by:

nextGaussian in interface RandomGenerator

Specified by:

nextGaussian in class RandomEngine

clone

public RandomCMWC clone()

Specified by:

clone in class RandomEngine