Class XorShift1024StarPhi

java.lang.Object

org.apache.commons.rng.core.BaseProvider

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

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

org.apache.commons.rng.core.source64.XorShift1024StarPhi

All Implemented Interfaces:

RandomLongSource, JumpableUniformRandomProvider, RestorableUniformRandomProvider, UniformRandomProvider

public class XorShift1024StarPhi
extends XorShift1024Star

A fast RNG implementing the XorShift1024* algorithm.

Note: This supersedes XorShift1024Star. The sequences emitted by both generators are correlated.

This generator differs only in the final multiplier (a fixed-point representation of the golden ratio), which eliminates linear dependencies from one of the lowest bits.

Since:

1.3

See Also:

• Original source code
• Xorshift (Wikipedia)

Constructor Summary

Constructors

Modifier	Constructor	Description
	XorShift1024StarPhi(long[] seed)	Creates a new instance.
protected	XorShift1024StarPhi(XorShift1024StarPhi source)	Creates a copy instance.

Method Summary

Modifier and Type	Method	Description
protected XorShift1024StarPhi	copy()	Create a copy.

Methods inherited from class XorShift1024Star

getStateInternal, jump, next, setStateInternal

Methods inherited from class LongProvider

nextBoolean, nextInt, nextLong, resetCachedState

Methods inherited from class BaseProvider

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

Methods inherited from class Object

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

Methods inherited from interface JumpableUniformRandomProvider

jumps, jumps

Methods inherited from interface UniformRandomProvider

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

Constructor Details

XorShift1024StarPhi

public XorShift1024StarPhi(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. A seed containing all zeros will create a non-functional generator.

XorShift1024StarPhi

protected XorShift1024StarPhi(XorShift1024StarPhi source)

Creates a copy instance.

Parameters:

source - Source to copy.

Method Details

copy

protected XorShift1024StarPhi copy()

Create a copy.

Overrides:

copy in class XorShift1024Star

Returns:

the copy