Class LogNormal

java.lang.Object

eduni.distributions.Generator

eduni.distributions.Normal

eduni.distributions.LogNormal

All Implemented Interfaces:

ContinuousGenerator, Seedable

public class LogNormal
extends Normal

A random number generator based on the lognormal distribution.

Version:

1.0, 2 October 2002

Author:

F.Mallet from Costas Simatos's original

Field Summary

Fields inherited from class Normal

mean, std_dev

Fields inherited from class Generator

distrib

Constructor Summary

Constructors

Constructor	Description
LogNormal(double mean, double variance)	the seed is automatically provided by the SeedGenerator
LogNormal(double mean, double variance, long seed)	The constructor with which a specific seed is set for the random number generator

Method Summary

Modifier and Type	Method	Description
double	sample()	Generate a new random number.

Methods inherited from class Generator

getSeed, reseed, setSeed

Methods inherited from class Object

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

Methods inherited from interface Seedable

getSeed, reseed, setSeed

Constructor Details

LogNormal

public LogNormal(double mean,
 double variance)

the seed is automatically provided by the SeedGenerator

Parameters:

mean - The mean of the distribution

variance - The variance of the distribution

LogNormal

public LogNormal(double mean,
 double variance,
 long seed)

The constructor with which a specific seed is set for the random number generator

Parameters:

mean - The mean of the distribution

variance - The variance of the distribution

seed - The initial seed for the generator, two instances with the same seed will generate the same sequence of numbers

Method Details

sample

public double sample()

Generate a new random number.

Specified by:

sample in interface ContinuousGenerator

Overrides:

sample in class Normal

Returns:

The next random number in the sequence