cz.cuni.jagrlib
Class RandomStatic

java.lang.Object
  cz.cuni.jagrlib.RandomStatic

public class RandomStatic
extends java.lang.Object

Simple static pseudo-random generators. Mostly LCG (Linear Congruential Generators).

Since:

0.24

See Also:

RandomStatic.java

Field Summary

protected static long	BITS_31
protected static long	BITS_32

Constructor Summary

RandomStatic()

Method Summary

static long	ibmRandu(long v) LCG pseudo-random generator: IBM randu.
static long	ibmRanduMax() max + 1 for: IBM randu.
static long	maple(long v) LCG pseudo-random generator from Maple.
static long	mapleMax() max + 1 for Maple.
static long	numericRecipes(long v) LCG pseudo-random generator from "Numeric Recipes in C".
static long	numericRecipesMax() max + 1 for: "Numeric Recipes in C".
static long	parkMiller(long v) LCG pseudo-random generator: minimal standard LCG.
static long	parkMillerMax() max + 1 for minimal standard LCG.

Methods inherited from class java.lang.Object

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

Field Detail

BITS_32

protected static final long BITS_32

See Also:

Constant Field Values

BITS_31

protected static final long BITS_31

See Also:

Constant Field Values

Constructor Detail

RandomStatic

public RandomStatic()

Method Detail

numericRecipes

public static final long numericRecipes(long v)

LCG pseudo-random generator from "Numeric Recipes in C".

Parameters:

v - Random seed.

Returns:

The next pseudo-random number in the sequence.

See Also:

numericRecipesMax()

numericRecipesMax

public static final long numericRecipesMax()

max + 1 for: "Numeric Recipes in C".

ibmRandu

public static final long ibmRandu(long v)

LCG pseudo-random generator: IBM randu. Bad distribution in 3D space!

Parameters:

v - Random seed.

Returns:

The next pseudo-random number in the sequence.

See Also:

ibmRanduMax()

ibmRanduMax

public static final long ibmRanduMax()

max + 1 for: IBM randu.

parkMiller

public static final long parkMiller(long v)

LCG pseudo-random generator: minimal standard LCG. Proposed in Stephen K. Park and Keith W. Miller: Random Number Generators: Good Ones Are Hard To Find, Communications of the ACM, 31(10):1192-1201, 1988.

Parameters:

v - Random seed.

Returns:

The next pseudo-random number in the sequence.

See Also:

parkMillerMax()

parkMillerMax

public static final long parkMillerMax()

max + 1 for minimal standard LCG.

maple

public static final long maple(long v)

LCG pseudo-random generator from Maple.

Parameters:

v - Random seed.

Returns:

The next pseudo-random number in the sequence.

See Also:

mapleMax()

mapleMax

public static final long mapleMax()

max + 1 for Maple.