Class PcgMcgXshRs32

java.lang.Object

org.apache.commons.rng.core.BaseProvider

org.apache.commons.rng.core.source32.IntProvider

org.apache.commons.rng.core.source32.AbstractPcgMcg6432

org.apache.commons.rng.core.source32.PcgMcgXshRs32

All Implemented Interfaces:

RandomIntSource, RestorableUniformRandomProvider, UniformRandomProvider

public class PcgMcgXshRs32
extends AbstractPcgMcg6432

A Permuted Congruential Generator (PCG) that is composed of a 64-bit Multiplicative Congruential Generator (MCG) combined with the XSH-RS (xorshift; random shift) output transformation to create 32-bit output.

State size is 64 bits and the period is 2⁶².

Since:

1.3

See Also:

• PCG, A Family of Better Random Number Generators

Constructor Summary

Constructors

Constructor	Description
PcgMcgXshRs32(Long seed)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
protected int	transform(long x)	Transform the 64-bit state of the generator to a 32-bit output.

Methods inherited from class AbstractPcgMcg6432

getStateInternal, next, setStateInternal

Methods inherited from class IntProvider

nextBoolean, nextBytes, nextBytes, nextBytesFill, nextDouble, 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 UniformRandomProvider

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

Constructor Details

PcgMcgXshRs32

public PcgMcgXshRs32(Long seed)

Creates a new instance.

Parameters:

seed - Initial seed.

Method Details

transform

protected int transform(long x)

Transform the 64-bit state of the generator to a 32-bit output. The transformation function shall vary with respect to different generators.

Specified by:

transform in class AbstractPcgMcg6432

Parameters:

x - State.

Returns:

the output