Class MersenneTwister

A standalone, pure JavaScript implementation of the Mersenne Twister pseudo random number generator.

Index

Constructors

Methods

int int31 normal random real realx rnd rndHiRes seed seedArray normal random

Constructors

constructor

new MersenneTwister(seed?: number): MersenneTwister
Instantiates a new Mersenne Twister.
Parameters
- Optionalseed: number
  The initial seed value, if not provided the current timestamp will be used.
Returns MersenneTwister

Methods

int

int(): number
Generates a random unsigned 32-bit integer.

Returns number
Since
0.1.0

int31

int31(): number
Generates a random unsigned 31-bit integer.

Returns number
Since
0.1.0

normal

normal(mu: number, sigma: number): number
A pseudo-normal distribution using the Box-Muller transform.
Parameters
- mu: number
  The normal distribution mean
- sigma: number
  The normal distribution standard deviation
Returns number

random

random(): number
Generates a random real in the interval [0;1[ with 32-bit resolution.

Same as .rnd() method - for consistency with Math.random() interface.

Returns number
Since
0.2.0

real

real(): number
Generates a random real in the interval [0;1] with 32-bit resolution.

Returns number
Since
0.1.0

realx

realx(): number
Generates a random real in the interval ]0;1[ with 32-bit resolution.

Returns number
Since
0.1.0

rnd

rnd(): number
Generates a random real in the interval [0;1[ with 32-bit resolution.

Returns number
Since
0.1.0

rndHiRes

rndHiRes(): number
Generates a random real in the interval [0;1[ with 53-bit resolution.

Returns number
Since
0.1.0

seed

seed(seed: number): number
Initializes the state vector by using one unsigned 32-bit integer "seed", which may be zero.
Parameters
- seed: number
  The seed value.
Returns number
Since
0.1.0

seedArray

seedArray(vector: array): void
Initializes the state vector by using an array key[] of unsigned 32-bit integers of the specified length. If length is smaller than 624, then each array of 32-bit integers gives distinct initial state vector. This is useful if you want a larger seed space than 32-bit word.
Parameters
- vector: array
  The seed vector.
Returns void
Since
0.1.0

`Static`normal

normal(...args: any[]): number
A factory method for generating random normal rolls
Parameters
- ...args: any[]
Returns number

`Static`random

random(): number
A factory method for generating random uniform rolls

Returns number