Package io.github.olyutorskii.aletojio.rng.xorsft

Class Xoshiro256pp

java.lang.Object

io.github.olyutorskii.aletojio.rng.xorsft.Xoshiro256pp

All Implemented Interfaces:

RndInt64

public class Xoshiro256pp
extends Object
implements RndInt64

xoshiro256++ Pseudo Random Generator.

Warning: The default seed value will give a very biased result.

See Also:

• Xorshift (Wikipedia)
• xoshiro / xoroshiro generators and the PRNG shootout

Constructor Summary

Constructors

Constructor	Description
Xoshiro256pp()	Constructor.

Method Summary

Modifier and Type	Method	Description
long	nextInt64()	Return next random number as 64bit long with random sign-bit.
void	setSeed(long s0Arg, long s1Arg, long s2Arg, long s3Arg)	Set seed.

Methods inherited from class java.lang.Object

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

Constructor Details

Xoshiro256pp

public Xoshiro256pp()

Constructor.

Warning: The default seed value will give a very biased result.

Method Details

nextInt64

public long nextInt64()

Return next random number as 64bit long with random sign-bit.

Specified by:

nextInt64 in interface RndInt64

Returns:

random number

setSeed

public void setSeed(long s0Arg,
 long s1Arg,
 long s2Arg,
 long s3Arg)
             throws IllegalArgumentException

Set seed.

At least one seed must be non-zero.

Parameters:

s0Arg - seed0

s1Arg - seed1

s2Arg - seed2

s3Arg - seed3

Throws:

IllegalArgumentException - At least one seed must be non-zero