JenkinsSmallFast32 (Apache Commons RNG Core 1.5 API)

java.lang.Object
- org.apache.commons.rng.core.BaseProvider
- - org.apache.commons.rng.core.source32.IntProvider
  - - org.apache.commons.rng.core.source32.JenkinsSmallFast32

All Implemented Interfaces:

RandomIntSource, RestorableUniformRandomProvider, UniformRandomProvider
```
public class JenkinsSmallFast32
extends IntProvider
```
Implement Bob Jenkins's small fast (JSF) 32-bit generator.
The state size is 128-bits; the shortest period is expected to be about 2⁹⁴ and it expected that about one seed will run into another seed within 2⁶⁴ values.

Since:

1.3

See Also:

A small noncryptographic PRNG

Constructor Summary

Constructors
Constructor Description

JenkinsSmallFast32(Integer seed)
Creates an instance with the given seed.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected byte[]`	`getStateInternal()`	Creates a snapshot of the RNG state.
`int`	`next()`
`protected void`	`setStateInternal(byte[] s)`	Resets the RNG to the given `state`.

Methods inherited from class org.apache.commons.rng.core.source32.IntProvider
nextBoolean, nextBytes, nextBytes, nextDouble, nextInt, nextLong, resetCachedState

Methods inherited from class org.apache.commons.rng.core.BaseProvider
checkIndex, checkStateSize, composeStateInternal, extendSeed, extendSeed, fillState, fillState, restoreState, saveState, splitStateInternal, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.commons.rng.UniformRandomProvider
doubles, doubles, doubles, doubles, ints, ints, ints, ints, longs, longs, longs, longs, nextDouble, nextDouble, nextFloat, nextFloat, nextFloat, nextInt, nextInt, nextLong, nextLong

- Constructor Detail
  - JenkinsSmallFast32
```
public JenkinsSmallFast32(Integer seed)
```
    Creates an instance with the given seed.
    
    Parameters:
    
    seed - Initial seed.
- Method Detail
  - next
```
public final int next()
```
    Returns:
    
    the next random value.
  - getStateInternal
```
protected byte[] getStateInternal()
```
    Creates a snapshot of the RNG state.
    
    Overrides:
    
    getStateInternal in class IntProvider
    
    Returns:
    
    the internal state.
  - setStateInternal
```
protected void setStateInternal(byte[] s)
```
    Resets the RNG to the given state.
    
    Overrides:
    
    setStateInternal in class IntProvider
    
    Parameters:
    
    s - State (previously obtained by a call to BaseProvider.getStateInternal()).
    
    See Also:
    
    BaseProvider.checkStateSize(byte[],int)