Well19937a (The Adobe Experience Manager SDK 2022.11.9850.20221116T162329Z-220900)

java.lang.Object
- org.apache.commons.math.random.BitsStreamGenerator
- - org.apache.commons.math.random.AbstractWell
  - - org.apache.commons.math.random.Well19937a

All Implemented Interfaces:

java.io.Serializable, RandomGenerator
```
public class Well19937a
extends AbstractWell
```
This class implements the WELL19937a pseudo-random number generator from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto.
This generator is described in a paper by François Panneton, Pierre L'Ecuyer and Makoto Matsumoto Improved Long-Period Generators Based on Linear Recurrences Modulo 2 ACM Transactions on Mathematical Software, 32, 1 (2006). The errata for the paper are in wellrng-errata.txt.

Since:

2.2

See Also:

WELL Random number generator, Serialized Form

Constructor Summary

Constructors
Constructor	Description
`Well19937a()`	Creates a new random number generator.
`Well19937a(int seed)`	Creates a new random number generator using a single int seed.
`Well19937a(int[] seed)`	Creates a new random number generator using an int array seed.
`Well19937a(long seed)`	Creates a new random number generator using a single long seed.

Method Summary
- Methods inherited from class org.apache.commons.math.random.AbstractWell
  setSeed, setSeed, setSeed
- Methods inherited from class org.apache.commons.math.random.BitsStreamGenerator
  nextBoolean, nextBytes, nextDouble, nextFloat, nextGaussian, nextInt, nextInt, nextLong
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Well19937a
```
public Well19937a()
```
    Creates a new random number generator.
    The instance is initialized using the current time as the seed.
  - Well19937a
```
public Well19937a(int seed)
```
    Creates a new random number generator using a single int seed.
    
    Parameters:
    
    seed - the initial seed (32 bits integer)
  - Well19937a
```
public Well19937a(int[] seed)
```
    Creates a new random number generator using an int array seed.
    
    Parameters:
    
    seed - the initial seed (32 bits integers array), if null the seed of the generator will be related to the current time
  - Well19937a
```
public Well19937a(long seed)
```
    Creates a new random number generator using a single long seed.
    
    Parameters:
    
    seed - the initial seed (64 bits integer)