wdmsim.util
Class Distribution

java.lang.Object
  java.util.Random
      wdmsim.util.Distribution

All Implemented Interfaces:

java.io.Serializable

public class Distribution
extends java.util.Random

Extends Java Random Class in order to provide good random number sequences.

Author:

andred

See Also:

Serialized Form

Constructor Summary

Distribution()

Distribution(int seq_num, int seed_num)
Distribution setup interface.

Distribution(long seed)
Creates a new Distribution object, which is nothing more than a random number generator.

Method Summary

double

nextExponential(double b) Exponential distribution.

Methods inherited from class java.util.Random

next, nextBoolean, nextBytes, nextDouble, nextFloat, nextGaussian, nextInt, nextInt, nextLong, setSeed

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Distribution

public Distribution()

Distribution

public Distribution(long seed)

Creates a new Distribution object, which is nothing more than a random number generator.

Parameters:

seed - initial value of the internal state of the pseudo-random number generator

Distribution

public Distribution(int seq_num,
                    int seed_num)

Distribution setup interface. Generate up to 25 good seeds for up to 4 parallel sequences.

Parameters:

seq_num - 1..4 sequence number

seed_num - 1..25 seed number

Method Detail

nextExponential

public double nextExponential(double b)

Exponential distribution.

Parameters:

b -

Returns:

next value of the Exponential distribution