Rng Class Reference

This class subsumes several often used random number generators. More...

#include <GlobalRng.h>

List of all members.

Static Public Member Functions
static void	seed (long s)
	Sets the seed for all random number generators to "s".
Static Public Attributes
static Bernoulli	coinToss
	Instance of class Bernoulli:.
static DiscreteUniform	discrete
	Instance of class DiscreteUniform:.
static Uniform	uni
	Instance of class Uniform:.
static Normal	gauss
	Instance of class Normal:.
static Cauchy	cauchy
	Instance of class Cauchy:.
static Geometric	geom
	Instance of class Geometric:.
static DiffGeometric	diffGeom
	Instance of class DiffGeometric:.
static Poisson	poisson
	Instance of class Poisson:.

---

Detailed Description

This class subsumes several often used random number generators.

This class instantiates the following classes at once:

• Bernoulli with name coinToss
• DiscreteUniform with name discrete
• Uniform with name uni
• Normal with name gauss
• Cauchy with name cauchy
• Geometric with name geom
• DiffGeometric with name diffGeom
• Poisson with name poisson

Additionally, the seed for all the random number generators listed above can be set by calling a single method.

Example

  #include "Rng/GlobalRng.h"

  void main()
  {
      // We need only one instance to get several
      // random number generators:
      Rng rng;

      // Set seed for all subsumed random number generators:
      rng.seed( 1234 );

      // Get random "numbers" for all subsumed random number generators:
      bool   rn1 = rng.coinToss( );
      long   rn2 = rng.discrete( );
      double rn3 = rng.uni( );
      double rn4 = rng.gauss( );
      double rn5 = rng.cauchy( );
      long   rn6 = rng.geom( );
      long   rn7 = rng.diffGeom( );

      // Output of random numbers:
      cout << "Bernoulli trial                              = " << rn1 << endl;
      cout << "Discrete distribution number                 = " << rn2 << endl;
      cout << "Uniform distribution number                  = " << rn3 << endl;
      cout << "Normal distribution number                   = " << rn4 << endl;
      cout << "Cauchy distribution number                   = " << rn5 << endl;
      cout << "Geometric distribution number                = " << rn6 << endl;
      cout << "Differential Geometric distribution number   = " << rn7 << endl;
  }

This is the way you can use the class and address the single random number generators in it.

Author:

M. Kreutz

Date:

1995-01-01

Changes:

none

Status:

stable

---

Member Function Documentation

void Rng::seed

(

long

s

)

[static]

Sets the seed for all random number generators to "s".

Sets the seed for all random number generators to "s".

Parameters:

s

the seed for the random number generators in this class

Returns:

none

Author:

M. Kreutz

Date:

1995-01-01

Changes

none

Status

stable

See also:

RandomVar::seed

---

The documentation for this class was generated from the following files:

• D:/HUYNQ/Works/Codes/Dolphin/Dolphin/Rng/GlobalRng.h
• D:/HUYNQ/Works/Codes/Dolphin/Dolphin/Rng/GlobalRng.cpp