com.newisys.random
Class MersenneTwisterFactory

java.lang.Object
  com.newisys.random.MersenneTwisterFactory

All Implemented Interfaces:

PRNGFactory

public final class MersenneTwisterFactory
extends Object
implements PRNGFactory

A factory implementation for the Mersenne Twister pseudorandom number generator.

Field Summary

static MersenneTwisterFactory

INSTANCE A singleton instance of MersenneTwisterFactory.

Constructor Summary

MersenneTwisterFactory()

Method Summary

PRNG	newInstance() Creates a new pseudorandom number generator with an arbitrarily chosen seed.
PRNG	newInstance(long seed) Creates a new pseudorandom number generator with the given seed.
PRNG	newInstance(PRNG seedSource) Creates a new pseudorandom number generator with a seed generated using the given generator.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final MersenneTwisterFactory INSTANCE

A singleton instance of MersenneTwisterFactory.

Constructor Detail

MersenneTwisterFactory

public MersenneTwisterFactory()

Method Detail

newInstance

public PRNG newInstance()

Description copied from interface: PRNGFactory

Creates a new pseudorandom number generator with an arbitrarily chosen seed. Generally, this seed will be a non-constant value, such as the current system time, so this method is not suitable for cases where reproducibility is desired.

Specified by:

newInstance in interface PRNGFactory

Returns:

a new PRNG instance

newInstance

public PRNG newInstance(long seed)

Description copied from interface: PRNGFactory

Creates a new pseudorandom number generator with the given seed. For a given factory, if two generators are created with the same seed, they will produce the same sequence of values.

Specified by:

newInstance in interface PRNGFactory

Parameters:

seed - the value used to seed the new generator

Returns:

a new PRNG instance

newInstance

public PRNG newInstance(PRNG seedSource)

Description copied from interface: PRNGFactory

Creates a new pseudorandom number generator with a seed generated using the given generator. This method is useful for creating families of independent random number generators all seeded from the same source.

Specified by:

newInstance in interface PRNGFactory

Parameters:

seedSource - the source of random data used to seed the new generator

Returns:

a new PRNG instance