edu.rit.numeric

Class UniformPrng

java.lang.Object

edu.rit.numeric.DoublePrng

edu.rit.numeric.UniformPrng

public class UniformPrng
extends DoublePrng

Class UniformPrng provides a pseudorandom number generator (PRNG) that generates random numbers with a uniform(a,b) distribution. The probability density function is
f(x) = 1/(b − a), a ≤ x ≤ b
f(x) = 0, otherwise

Every call of the next() method results in one call of the underlying uniform PRNG's nextDouble() method.

Constructor Summary

Constructors

Constructor and Description
UniformPrng(Random theUniformPrng, double a, double b) Construct a new uniform PRNG.

Method Summary

Modifier and Type	Method and Description
double	next() Returns the next random number.

Methods inherited from class java.lang.Object

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

Constructor Detail

UniformPrng

public UniformPrng(Random theUniformPrng,
                   double a,
                   double b)

Construct a new uniform PRNG.

Parameters:

theUniformPrng - The underlying uniform PRNG.

a - Interval lower bound.

b - Interval upper bound.

Throws:

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

java.lang.IllegalArgumentException - (unchecked exception) Thrown if a ≥ b.

Method Detail

next

public double next()

Returns the next random number.

Specified by:

next in class DoublePrng

Returns:

Random number.