org.apache.commons.rng.core.source64

Class XorShift1024Star

java.lang.Object

org.apache.commons.rng.core.BaseProvider

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

org.apache.commons.rng.core.source64.XorShift1024Star

All Implemented Interfaces:

RandomLongSource, RestorableUniformRandomProvider, UniformRandomProvider

public class XorShift1024Star
extends LongProvider

A fast RNG.

Since:

1.0

See Also:

Original source code, Xorshift (Wikipedia)

Constructor Summary

Constructors

Constructor and Description
XorShift1024Star(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, nextBytes, nextBytes, nextDouble, nextFloat, nextInt, nextLong

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

checkIndex, checkStateSize, fillState, fillState, nextInt, nextLong, restoreState, saveState, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

XorShift1024Star

public XorShift1024Star(long[] seed)

Creates a new instance.

Parameters:

seed - Initial seed. If the length is larger than 16, only the first 16 elements will be used; if smaller, the remaining elements will be automatically set.

Method Detail

getStateInternal

protected byte[] getStateInternal()

Creates a snapshot of the RNG state.

Overrides:

getStateInternal in class BaseProvider

Returns:

the internal state.

setStateInternal

protected void setStateInternal(byte[] s)

Resets the RNG to the given state.

Overrides:

setStateInternal in class BaseProvider

Parameters:

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

See Also:

BaseProvider.checkStateSize(byte[],int)

next

public long next()

Specified by:

next in interface RandomLongSource

Specified by:

next in class LongProvider

Returns:

the next random value.