com.numericalmethod.suanshu.stats.random.univariate.normal

Class NormalRng

java.lang.Object

com.numericalmethod.suanshu.stats.random.univariate.normal.NormalRng

All Implemented Interfaces:

RandomNumberGenerator, java.io.Serializable

public class NormalRng
extends java.lang.Object
implements RandomNumberGenerator

This is a random number generator that generates random deviates according to the Normal distribution.

See Also:

Wikipedia: Normal distribution, Serialized Form

Constructor Summary

Constructors

Constructor and Description
NormalRng(double mean, double sigma) Construct a random number generator to sample from the Normal distribution.
NormalRng(double mean, double sigma, RandomStandardNormalNumberGenerator rnorm) Construct a random number generator to sample from the Normal distribution.

Method Summary

Modifier and Type	Method and Description
double	nextDouble() Get the next random double.
void	seed(long... seeds) Seed the random number generator to produce repeatable sequences.

Methods inherited from class java.lang.Object

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

Constructor Detail

NormalRng

public NormalRng(double mean,
                 double sigma,
                 RandomStandardNormalNumberGenerator rnorm)

Construct a random number generator to sample from the Normal distribution.

Parameters:

mean - the mean

sigma - the standard deviation

rnorm - a standard random normal number generator

NormalRng

public NormalRng(double mean,
                 double sigma)

Construct a random number generator to sample from the Normal distribution.

Parameters:

mean - the mean

sigma - the standard deviation

Method Detail

seed

public void seed(long... seeds)

Description copied from interface: RandomNumberGenerator

Seed the random number generator to produce repeatable sequences.

Specified by:

seed in interface RandomNumberGenerator

Parameters:

seeds - the seeds

nextDouble

public double nextDouble()

Description copied from interface: RandomNumberGenerator

Get the next random double.

Specified by:

nextDouble in interface RandomNumberGenerator

Returns:

the next random number