SSJ
V. 2.6.

umontreal.iro.lecuyer.randvar
Class TriangularGen

java.lang.Object
  extended by umontreal.iro.lecuyer.randvar.RandomVariateGen
      extended by umontreal.iro.lecuyer.randvar.TriangularGen

public class TriangularGen
extends RandomVariateGen

This class implements random variate generators for the triangular distribution. Its density is

f (x) = 2(x - a)/[(b - a)(m - a)]          for a <= x <= m,
f (x) = 2(b - x)/[(b - a)(b - m)]          for m <= x <= b,
f (x) = 0          elsewhere,

where a <= m <= b (see, e.g.,).

The (non-static) nextDouble method simply calls inverseF on the distribution.


Constructor Summary
TriangularGen(RandomStream s, double m)
          Creates a triangular random variate generator over the interval (0, 1), with parameter m, using stream s.
TriangularGen(RandomStream s, double a, double b, double m)
          Creates a triangular random variate generator over the interval (a, b), with parameter m, using stream s.
TriangularGen(RandomStream s, TriangularDist dist)
          Creates a new generator for the triangular distribution dist and stream s.
 
Method Summary
 double getA()
          Returns the value of a for this object.
 double getB()
          Returns the value of b for this object.
 double getM()
          Returns the value of m for this object.
static double nextDouble(RandomStream s, double a, double b, double m)
          Generates a new variate from the triangular distribution with parameters a = a, b = b and m = m and stream s, using inversion.
 
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

TriangularGen

public TriangularGen(RandomStream s,
                     double a,
                     double b,
                     double m)
Creates a triangular random variate generator over the interval (a, b), with parameter m, using stream s.


TriangularGen

public TriangularGen(RandomStream s,
                     double m)
Creates a triangular random variate generator over the interval (0, 1), with parameter m, using stream s.


TriangularGen

public TriangularGen(RandomStream s,
                     TriangularDist dist)
Creates a new generator for the triangular distribution dist and stream s.

Method Detail

nextDouble

public static double nextDouble(RandomStream s,
                                double a,
                                double b,
                                double m)
Generates a new variate from the triangular distribution with parameters a = a, b = b and m = m and stream s, using inversion.


getA

public double getA()
Returns the value of a for this object.


getB

public double getB()
Returns the value of b for this object.


getM

public double getM()
Returns the value of m for this object.


SSJ
V. 2.6.

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