io.virtdata.libimpl

Class RandomBypassAdapter

java.lang.Object

org.apache.commons.math3.random.AbstractRandomGenerator

io.virtdata.libimpl.RandomBypassAdapter

All Implemented Interfaces:

org.apache.commons.math3.random.RandomGenerator

public class RandomBypassAdapter
extends org.apache.commons.math3.random.AbstractRandomGenerator

This is just a way to make apache commons math distributions work with an externally mediated RNG source (precooked hash outputs). It's ugly, and it will be rewritten. It is _NOT_ threadsafe. At least it is contained here in its wicked collusion with the sampling adapter. This is a loopback that is used ONLY as state for side-effects, so it shouldn't be used for anything except as an API work-around for the sampling adapter to use distributions from apache commons math with repeatable outputs for a given samplerFunction. Basically, it allows manual control of the RNG input to a distribution function.

Constructor Summary

Constructors

Constructor and Description
RandomBypassAdapter()

Method Summary

Modifier and Type	Method and Description
double	nextDouble()
double	nextGaussian()
void	setSeed(long seed) This is expected to be set with a hashed value before being accessed.

Methods inherited from class org.apache.commons.math3.random.AbstractRandomGenerator

clear, nextBoolean, nextBytes, nextFloat, nextInt, nextInt, nextLong, setSeed, setSeed

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomBypassAdapter

public RandomBypassAdapter()

Method Detail

setSeed

public void setSeed(long seed)

This is expected to be set with a hashed value before being accessed.

Specified by:

setSeed in interface org.apache.commons.math3.random.RandomGenerator

Specified by:

setSeed in class org.apache.commons.math3.random.AbstractRandomGenerator

Parameters:

seed - - The hashed input

nextDouble

public double nextDouble()

Specified by:

nextDouble in interface org.apache.commons.math3.random.RandomGenerator

Specified by:

nextDouble in class org.apache.commons.math3.random.AbstractRandomGenerator

nextGaussian

public double nextGaussian()

Specified by:

nextGaussian in interface org.apache.commons.math3.random.RandomGenerator

Overrides:

nextGaussian in class org.apache.commons.math3.random.AbstractRandomGenerator