Constructor
new MersenneTwister(seedopt)
- Version:
- 0.2.3
- License:
- Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura, All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. The names of its contributors may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Instantiates a new Mersenne Twister.
Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
seed |
number |
<optional> |
The initial seed value, if not provided the current timestamp will be used. |
Methods
(static) normal() → {number}
A factory method for generating random normal rolls
Returns:
- Type
- number
(static) random() → {number}
A factory method for generating random uniform rolls
Returns:
- Type
- number
int() → {number}
- Since:
- 0.1.0
Generates a random unsigned 32-bit integer.
Returns:
- Type
- number
int31() → {number}
- Since:
- 0.1.0
Generates a random unsigned 31-bit integer.
Returns:
- Type
- number
normal(mu, sigma) → {number}
A pseudo-normal distribution using the Box-Muller transform.
Parameters:
| Name | Type | Description |
|---|---|---|
mu |
number | The normal distribution mean |
sigma |
number | The normal distribution standard deviation |
Returns:
- Type
- number
random() → {number}
- Since:
- 0.2.0
Generates a random real in the interval [0;1[ with 32-bit resolution.
Same as .rnd() method - for consistency with Math.random() interface.
Returns:
- Type
- number
real() → {number}
- Since:
- 0.1.0
Generates a random real in the interval [0;1] with 32-bit resolution.
Returns:
- Type
- number
realx() → {number}
- Since:
- 0.1.0
Generates a random real in the interval ]0;1[ with 32-bit resolution.
Returns:
- Type
- number
rnd() → {number}
- Since:
- 0.1.0
Generates a random real in the interval [0;1[ with 32-bit resolution.
Returns:
- Type
- number
rndHiRes() → {number}
- Since:
- 0.1.0
Generates a random real in the interval [0;1[ with 53-bit resolution.
Returns:
- Type
- number
seed(seed)
- Since:
- 0.1.0
Initializes the state vector by using one unsigned 32-bit integer "seed", which may be zero.
Parameters:
| Name | Type | Description |
|---|---|---|
seed |
number | The seed value. |
seedArray(vector)
- Since:
- 0.1.0
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:
| Name | Type | Description |
|---|---|---|
vector |
array | The seed vector. |