umontreal.iro.lecuyer.randvar
Class FatigueLifeGen

java.lang.Object
  umontreal.iro.lecuyer.randvar.RandomVariateGen
      umontreal.iro.lecuyer.randvar.FatigueLifeGen

public class FatigueLifeGen
extends RandomVariateGen

This class implements random variate generators for the fatigue life distribution with location parameter μ, scale parameter β and shape parameter γ. The density function of this distribution is

f (x) = [(((x - μ)/β)^1/2 + (β/(x - μ))^1/2)/(2γ(x - μ))]φ((((x - μ)/β)^1/2 - (β/(x - μ))^1/2)/γ), x > μ

where φ is the probability density of the standard normal distribution.

Constructor Summary

FatigueLifeGen(RandomStream s, double mu, double beta, double gamma)
Creates a fatigue life random variate generator with parameters μ = mu, β = beta and γ = gamma, using stream s.

FatigueLifeGen(RandomStream s, FatigueLifeDist dist)
Creates a new generator for the distribution dist, using stream s.

Method Summary

double	getBeta() Returns the parameter β of this object.
double	getGamma() Returns the parameter γ of this object.
double	getMu() Returns the parameter μ of this object.
static double	nextDouble(RandomStream s, double mu, double beta, double gamma) Generates a variate from the fatigue life distribution with location parameter μ, scale parameter β and shape parameter γ.

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

getDistribution, getStream, nextArrayOfDouble, nextDouble, setStream, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FatigueLifeGen

public FatigueLifeGen(RandomStream s,
                      double mu,
                      double beta,
                      double gamma)

Creates a fatigue life random variate generator with parameters μ = mu, β = beta and γ = gamma, using stream s.

FatigueLifeGen

public FatigueLifeGen(RandomStream s,
                      FatigueLifeDist dist)

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

Method Detail

nextDouble

public static double nextDouble(RandomStream s,
                                double mu,
                                double beta,
                                double gamma)

Generates a variate from the fatigue life distribution with location parameter μ, scale parameter β and shape parameter γ.

getBeta

public double getBeta()

Returns the parameter β of this object.

getGamma

public double getGamma()

Returns the parameter γ of this object.

getMu

public double getMu()

Returns the parameter μ of this object.