DotyHumphreySmallFastCounting32 (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.DotyHumphreySmallFastCounting32

All Implemented Interfaces:

RandomIntSource, RestorableUniformRandomProvider, UniformRandomProvider
```
public class DotyHumphreySmallFastCounting32
extends IntProvider
```
Implement the Small, Fast, Counting (SFC) 32-bit generator of Chris Doty-Humphrey. The original source is the PractRand test suite by the same author.
The state size is 128-bits; the period is a minimum of 2³² and an average of approximately 2¹²⁷.

Since:

1.3

See Also:

PractRand

Constructor Summary

Constructors
Constructor Description

DotyHumphreySmallFastCounting32(int[] 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
  - DotyHumphreySmallFastCounting32
```
public DotyHumphreySmallFastCounting32(int[] seed)
```
    Creates an instance with the given seed.
    
    Parameters:
    
    seed - Initial seed. If the length is larger than 3, only the first 3 elements will be used; if smaller, the remaining elements will be automatically set.
- 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)