73 lines
2.9 KiB
JavaScript
73 lines
2.9 KiB
JavaScript
"use strict";
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.createRandomInt = void 0;
|
|
var _factory = require("../../utils/factory.js");
|
|
var _randomMatrix = require("./util/randomMatrix.js");
|
|
var _seededRNG = require("./util/seededRNG.js");
|
|
var _is = require("../../utils/is.js");
|
|
const name = 'randomInt';
|
|
const dependencies = ['typed', 'config', '?on'];
|
|
const createRandomInt = exports.createRandomInt = /* #__PURE__ */(0, _factory.factory)(name, dependencies, _ref => {
|
|
let {
|
|
typed,
|
|
config,
|
|
on
|
|
} = _ref;
|
|
// seeded pseudo random number generator
|
|
let rng = (0, _seededRNG.createRng)(config.randomSeed);
|
|
if (on) {
|
|
on('config', function (curr, prev) {
|
|
if (curr.randomSeed !== prev.randomSeed) {
|
|
rng = (0, _seededRNG.createRng)(curr.randomSeed);
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Return a random integer number larger or equal to `min` and smaller than `max`
|
|
* using a uniform distribution.
|
|
*
|
|
* Syntax:
|
|
*
|
|
* math.randomInt() // generate a random integer between 0 and 1
|
|
* math.randomInt(max) // generate a random integer between 0 and max
|
|
* math.randomInt(min, max) // generate a random integer between min and max
|
|
* math.randomInt(size) // generate a matrix with random integer between 0 and 1
|
|
* math.randomInt(size, max) // generate a matrix with random integer between 0 and max
|
|
* math.randomInt(size, min, max) // generate a matrix with random integer between min and max
|
|
*
|
|
* Examples:
|
|
*
|
|
* math.randomInt(100) // returns a random integer between 0 and 100
|
|
* math.randomInt(30, 40) // returns a random integer between 30 and 40
|
|
* math.randomInt([2, 3]) // returns a 2x3 matrix with random integers between 0 and 1
|
|
*
|
|
* See also:
|
|
*
|
|
* random, pickRandom
|
|
*
|
|
* @param {Array | Matrix} [size] If provided, an array or matrix with given
|
|
* size and filled with random values is returned
|
|
* @param {number} [min] Minimum boundary for the random value, included
|
|
* @param {number} [max] Maximum boundary for the random value, excluded
|
|
* @return {number | Array | Matrix} A random integer value
|
|
*/
|
|
return typed(name, {
|
|
'': () => _randomInt(0, 1),
|
|
number: max => _randomInt(0, max),
|
|
'number, number': (min, max) => _randomInt(min, max),
|
|
'Array | Matrix': size => _randomIntMatrix(size, 0, 1),
|
|
'Array | Matrix, number': (size, max) => _randomIntMatrix(size, 0, max),
|
|
'Array | Matrix, number, number': (size, min, max) => _randomIntMatrix(size, min, max)
|
|
});
|
|
function _randomIntMatrix(size, min, max) {
|
|
const res = (0, _randomMatrix.randomMatrix)(size.valueOf(), () => _randomInt(min, max));
|
|
return (0, _is.isMatrix)(size) ? size.create(res, 'number') : res;
|
|
}
|
|
function _randomInt(min, max) {
|
|
return Math.floor(min + rng() * (max - min));
|
|
}
|
|
}); |