org.apache.commons.rng.core.source64

Class SplitMix64

java.lang.Object

org.apache.commons.rng.core.BaseProvider

org.apache.commons.rng.core.source64.LongProvider

org.apache.commons.rng.core.source64.SplitMix64

All Implemented Interfaces:

RandomLongSource, RestorableUniformRandomProvider, UniformRandomProvider

public class SplitMix64
extends LongProvider

A fast RNG, with 64 bits of state, that can be used to initialize the state of other generators.

Since:

1.0

See Also:

Original source code

Constructor Summary

Constructors

Constructor and Description
SplitMix64(long seed) Creates a new instance.
SplitMix64(Long seed) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
protected byte[]	getStateInternal() Creates a snapshot of the RNG state.
long	next()
protected void	setStateInternal(byte[] s) Resets the RNG to the given state.

Methods inherited from class org.apache.commons.rng.core.source64.LongProvider

nextBoolean, nextInt, nextLong, resetCachedState

Methods inherited from class org.apache.commons.rng.core.BaseProvider

checkIndex, checkStateSize, composeStateInternal, extendSeed, extendSeed, fillState, fillState, restoreState, saveState, splitStateInternal, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.rng.UniformRandomProvider

doubles, doubles, doubles, doubles, ints, ints, ints, ints, longs, longs, longs, longs, nextBytes, nextBytes, nextDouble, nextDouble, nextDouble, nextFloat, nextFloat, nextFloat, nextInt, nextInt, nextLong, nextLong

Constructor Detail

SplitMix64

public SplitMix64(long seed)

Creates a new instance.

Parameters:

seed - Initial seed.

Since:

1.3

SplitMix64

public SplitMix64(Long seed)

Creates a new instance.

Parameters:

seed - Initial seed.

Method Detail

next

public long next()

Returns:

the next random value.

getStateInternal

protected byte[] getStateInternal()

Creates a snapshot of the RNG state.

Overrides:

getStateInternal in class LongProvider

Returns:

the internal state.

setStateInternal

protected void setStateInternal(byte[] s)

Resets the RNG to the given state.

Overrides:

setStateInternal in class LongProvider

Parameters:

s - State (previously obtained by a call to BaseProvider.getStateInternal()).

See Also:

BaseProvider.checkStateSize(byte[],int)