it.unimi.dsi.util

Class XorGensRandomGenerator

java.lang.Object

org.apache.commons.math3.random.AbstractRandomGenerator

it.unimi.dsi.util.XorGensRandomGenerator

All Implemented Interfaces:

RandomGenerator

public class XorGensRandomGenerator
extends AbstractRandomGenerator

A fast, top-quality 64-bit pseudorandom number generator described in “Some long-period random number generators using shift and xors”, ANZIAM Journal 48, C188−C202, 2007.

Constructor Summary

Constructors

Constructor and Description
XorGensRandomGenerator() Creates a new generator, initializing its seed with Util.randomSeed().
XorGensRandomGenerator(long seed) Creates a new generator using a given seed.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	nextBoolean()
void	nextBytes(byte[] bytes)
double	nextDouble()
float	nextFloat()
int	nextInt()
int	nextInt(int n)
long	nextLong()
long	nextLong(long n)
void	setSeed(long seed)

Methods inherited from class org.apache.commons.math3.random.AbstractRandomGenerator

clear, nextGaussian, setSeed, setSeed

Methods inherited from class java.lang.Object

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

Constructor Detail

XorGensRandomGenerator

public XorGensRandomGenerator()

Creates a new generator, initializing its seed with Util.randomSeed().

XorGensRandomGenerator

public XorGensRandomGenerator(long seed)

Creates a new generator using a given seed.

Parameters:

seed - a nonzero seed for the generator (if zero, the generator will be seeded with -1).

Method Detail

setSeed

public void setSeed(long seed)

Specified by:

setSeed in interface RandomGenerator

Specified by:

setSeed in class AbstractRandomGenerator

nextLong

public long nextLong()

Specified by:

nextLong in interface RandomGenerator

Overrides:

nextLong in class AbstractRandomGenerator

nextInt

public int nextInt()

Specified by:

nextInt in interface RandomGenerator

Overrides:

nextInt in class AbstractRandomGenerator

nextInt

public int nextInt(int n)

Specified by:

nextInt in interface RandomGenerator

Overrides:

nextInt in class AbstractRandomGenerator

nextLong

public long nextLong(long n)

nextDouble

public double nextDouble()

Specified by:

nextDouble in interface RandomGenerator

Specified by:

nextDouble in class AbstractRandomGenerator

nextFloat

public float nextFloat()

Specified by:

nextFloat in interface RandomGenerator

Overrides:

nextFloat in class AbstractRandomGenerator

nextBoolean

public boolean nextBoolean()

Specified by:

nextBoolean in interface RandomGenerator

Overrides:

nextBoolean in class AbstractRandomGenerator

nextBytes

public void nextBytes(byte[] bytes)

Specified by:

nextBytes in interface RandomGenerator

Overrides:

nextBytes in class AbstractRandomGenerator