umontreal.iro.lecuyer.randvar
Class ChiRatioOfUniformsGen

java.lang.Object
  umontreal.iro.lecuyer.randvar.RandomVariateGen
      umontreal.iro.lecuyer.randvar.ChiGen
          umontreal.iro.lecuyer.randvar.ChiRatioOfUniformsGen

public class ChiRatioOfUniformsGen
extends ChiGen

This class implements Chi random variate generators using the ratio of uniforms method with shift.

Constructor Summary

ChiRatioOfUniformsGen(RandomStream s, ChiDist dist)
Create a new generator for the distribution dist, using stream s.

ChiRatioOfUniformsGen(RandomStream s, int nu)
Creates a chi random variate generator with ν = nu degrees of freedom, using stream s.

Method Summary

double	nextDouble() Generates a random number from the continuous distribution contained in this object.
static double	nextDouble(RandomStream s, int nu)

Methods inherited from class umontreal.iro.lecuyer.randvar.ChiGen

getNu

Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGen

getDistribution, getStream, nextArrayOfDouble, setStream, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ChiRatioOfUniformsGen

public ChiRatioOfUniformsGen(RandomStream s,
                             int nu)

Creates a chi random variate generator with ν = nu degrees of freedom, using stream s.

ChiRatioOfUniformsGen

public ChiRatioOfUniformsGen(RandomStream s,
                             ChiDist dist)

Create a new generator for the distribution dist, using stream s.

Method Detail

nextDouble

public double nextDouble()

Description copied from class: RandomVariateGen

Generates a random number from the continuous distribution contained in this object. By default, this method uses inversion by calling the inverseF method of the distribution object. Alternative generating methods are provided in subclasses.

Overrides:

nextDouble in class RandomVariateGen

Returns:

the generated value

nextDouble

public static double nextDouble(RandomStream s,
                                int nu)