SSJ
V. 2.6.

umontreal.iro.lecuyer.randvar
Class PoissonTIACGen

java.lang.Object
  extended by umontreal.iro.lecuyer.randvar.RandomVariateGen
      extended by umontreal.iro.lecuyer.randvar.RandomVariateGenInt
          extended by umontreal.iro.lecuyer.randvar.PoissonGen
              extended by umontreal.iro.lecuyer.randvar.PoissonTIACGen

public class PoissonTIACGen
extends PoissonGen

This class implements random variate generators having the Poisson distribution (see PoissonGen). Uses the tabulated inversion combined with the acceptance complement (TIAC) method of. The implementation is adapted from UNURAN.


Constructor Summary
PoissonTIACGen(RandomStream s, double lambda)
          Creates a Poisson random variate generator with parameter λ = lambda, using stream s.
PoissonTIACGen(RandomStream s, PoissonDist dist)
          Creates a new random variate generator using the Poisson distribution dist and stream s.
 
Method Summary
 int nextInt()
          Generates a random number (an integer) from the discrete distribution contained in this object.
static int nextInt(RandomStream s, double lambda)
           
 
Methods inherited from class umontreal.iro.lecuyer.randvar.PoissonGen
getLambda
 
Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGenInt
getDistribution, nextArrayOfInt
 
Methods inherited from class umontreal.iro.lecuyer.randvar.RandomVariateGen
getStream, nextArrayOfDouble, nextDouble, setStream, toString
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

PoissonTIACGen

public PoissonTIACGen(RandomStream s,
                      double lambda)
Creates a Poisson random variate generator with parameter λ = lambda, using stream s.


PoissonTIACGen

public PoissonTIACGen(RandomStream s,
                      PoissonDist dist)
Creates a new random variate generator using the Poisson distribution dist and stream s.

Method Detail

nextInt

public int nextInt()
Description copied from class: RandomVariateGenInt
Generates a random number (an integer) from the discrete 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:
nextInt in class RandomVariateGenInt
Returns:
the generated value

nextInt

public static int nextInt(RandomStream s,
                          double lambda)

SSJ
V. 2.6.

To submit a bug or ask questions, send an e-mail to Pierre L'Ecuyer.