rand_uint32.js (1227B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2018 The Stdlib Authors. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 'use strict'; 20 21 // MODULES // 22 23 var UINT32_MAX = require( '@stdlib/constants/uint32/max' ); 24 var floor = require( '@stdlib/math/base/special/floor' ); 25 26 27 // VARIABLES // 28 29 var MAX = UINT32_MAX - 1; 30 31 32 // MAIN // 33 34 /** 35 * Returns a pseudorandom integer on the interval \\([1, 2^{32}-1)\\). 36 * 37 * @private 38 * @returns {PositiveInteger} pseudorandom integer 39 * 40 * @example 41 * var v = randuint32(); 42 * // returns <number> 43 */ 44 function randuint32() { 45 var v = floor( 1.0 + (MAX*Math.random()) ); // eslint-disable-line stdlib/no-builtin-math 46 return v >>> 0; // asm type annotation 47 } 48 49 50 // EXPORTS // 51 52 module.exports = randuint32;