org.apache.commons.math.random
Class UniformRandomGenerator

java.lang.Object
  org.apache.commons.math.random.UniformRandomGenerator

All Implemented Interfaces:

NormalizedRandomGenerator

public class UniformRandomGenerator
extends Object
implements NormalizedRandomGenerator

This class implements a normalized uniform random generator.

Since it is a normalized random generator, it generates values from a uniform distribution with mean equal to 0 and standard deviation equal to 1. Generated values fall in the range [-√3, +√3].

Since:

1.2

Version:

$Revision: 811827 $ $Date: 2009-09-06 11:32:50 -0400 (Sun, 06 Sep 2009) $

Field Summary

private RandomGenerator	generator Underlying generator.
private static long	serialVersionUID Serializable version identifier.
private static double	SQRT3 Square root of three.

Constructor Summary

UniformRandomGenerator(RandomGenerator generator)
Create a new generator.

Method Summary

double

nextNormalizedDouble() Generate a random scalar with null mean and unit standard deviation.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

Serializable version identifier.

See Also:

Constant Field Values

SQRT3

private static final double SQRT3

Square root of three.

generator

private final RandomGenerator generator

Underlying generator.

Constructor Detail

UniformRandomGenerator

public UniformRandomGenerator(RandomGenerator generator)

Create a new generator.

Parameters:

generator - underlying random generator to use

Method Detail

nextNormalizedDouble

public double nextNormalizedDouble()

Generate a random scalar with null mean and unit standard deviation.

The number generated is uniformly distributed between -&sqrt;(3) and +&sqrt;(3).

Specified by:

nextNormalizedDouble in interface NormalizedRandomGenerator

Returns:

a random scalar with null mean and unit standard deviation