KISSRandom (nosqlbench)

java.lang.Object

org.apache.commons.rng.core.BaseProvider

org.apache.commons.rng.core.source32.IntProvider

org.apache.commons.rng.core.source32.KISSRandom

All Implemented Interfaces:: RandomIntSource, RestorableUniformRandomProvider, UniformRandomProvider

public class KISSRandom
extends IntProvider

Port from Marsaglia's "KISS" algorithm. This version contains the correction referred to here in a reply to the original post.

Since:: 1.0
See Also:: KISS (Wikipedia)

Constructor Summary

Constructors

Constructor Description

KISSRandom(int[] seed)
Creates a new instance.

Method Summary

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, nextFloat, nextInt, nextLong

Methods inherited from class org.apache.commons.rng.core.BaseProvider

checkIndex, checkStateSize, composeStateInternal, fillState, fillState, nextInt, nextLong, restoreState, saveState, splitStateInternal, toString

Methods inherited from class java.lang.Object

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

Constructor Details
- KISSRandom
  
  public KISSRandom(int[] seed)
  
  Creates a new instance.
  
  Parameters:
  
  seed - Seed. If the length is larger than 4, only the first 4 elements will be used; if smaller, the remaining elements will be automatically set.
Method Details
- 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)
- next
  
  public int next()
  
  Returns:
  
  the next random value.