org.jenetics.util

Class LCG64ShiftRandom.ThreadLocal

java.lang.Object

java.lang.ThreadLocal<LCG64ShiftRandom>

org.jenetics.util.LCG64ShiftRandom.ThreadLocal

Enclosing class:

LCG64ShiftRandom

public static final class LCG64ShiftRandom.ThreadLocal
extends ThreadLocal<LCG64ShiftRandom>

This class represents a thread local implementation of the LCG64ShiftRandom PRNG. It's recommended to initialize the RandomRegistry the following way:

// Register the PRNG with the default parameters. RandomRegistry.setRandom(new LCG64ShiftRandom.ThreadLocal()); // Register the PRNG with the LECUYER3 parameters. RandomRegistry.setRandom(new LCG64ShiftRandom.ThreadLocal( LCG64ShiftRandom.LECUYER3 ));

Be aware, that calls of the setSeed(long) method will throw an UnsupportedOperationException for thread local instances.

RandomRegistry.setRandom(new LCG64ShiftRandom.ThreadLocal()); // Will throw 'UnsupportedOperationException'. RandomRegistry.getRandom().setSeed(1234);

Since:

1.1

Version:

3.0 — $Date: 2014-12-28 $

Author:

Franz Wilhelmstötter

Constructor Summary

Constructors

Constructor and Description
ThreadLocal() Create a new thread local instance of the LCG64ShiftRandom PRNG with the DEFAULT parameters.
ThreadLocal(LCG64ShiftRandom.Param param) Create a new thread local instance of the LCG64ShiftRandom PRNG with the given parameters.

Method Summary

Modifier and Type	Method and Description
protected LCG64ShiftRandom	initialValue() Create a new PRNG using block splitting for guaranteeing well distributed PRN for every thread.

Methods inherited from class java.lang.ThreadLocal

get, remove, set, withInitial

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadLocal

public ThreadLocal()

Create a new thread local instance of the LCG64ShiftRandom PRNG with the DEFAULT parameters.

ThreadLocal

public ThreadLocal(LCG64ShiftRandom.Param param)

Create a new thread local instance of the LCG64ShiftRandom PRNG with the given parameters.

Parameters:

param - the LC parameters.

Throws:

NullPointerException - if the given parameters are null.

Method Detail

initialValue

protected LCG64ShiftRandom initialValue()

Create a new PRNG using block splitting for guaranteeing well distributed PRN for every thread.

Tina’s Random Number Generator Library
Chapter 2. Pseudo-random numbers for parallel Monte Carlo simulations, Page 7
Heiko Bauke
[ http://numbercrunch.de/trng/trng.pdf ].

Overrides:

initialValue in class ThreadLocal<LCG64ShiftRandom>