edu.rit.numeric
Class DoublePrng

java.lang.Object
  edu.rit.numeric.DoublePrng

Direct Known Subclasses:

ExponentialPrng, NormalPrng, UniformPrng

public abstract class DoublePrng
extends Object

Class DoublePrng is the abstract base class for a pseudorandom number generator (PRNG) that generates random numbers of type double. The generated random numbers' probability distribution is determined by the subclass.

Field Summary

protected Random

myUniformPrng The underlying uniform PRNG.

Constructor Summary

DoublePrng(Random theUniformPrng)
Construct a new double PRNG.

Method Summary

abstract double

next() Returns the next random number.

Methods inherited from class java.lang.Object

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

Field Detail

myUniformPrng

protected final Random myUniformPrng

The underlying uniform PRNG.

Constructor Detail

DoublePrng

public DoublePrng(Random theUniformPrng)

Construct a new double PRNG.

Parameters:

theUniformPrng - The underlying uniform PRNG.

Throws:

NullPointerException - (unchecked exception) Thrown if theUniformPrng is null.

Method Detail

next

public abstract double next()

Returns the next random number.

Returns:

Random number.