index.js (1318B)
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 /** 22 * Multiply a double-precision floating-point number by an integer power of two. 23 * 24 * @module @stdlib/math/base/special/ldexp 25 * 26 * @example 27 * var ldexp = require( '@stdlib/math/base/special/ldexp' ); 28 * 29 * var x = ldexp( 0.5, 3 ); // => 0.5 * 2^3 = 0.5 * 8 30 * // returns 4.0 31 * 32 * x = ldexp( 4.0, -2 ); // => 4 * 2^(-2) = 4 * (1/4) 33 * // returns 1.0 34 * 35 * x = ldexp( 0.0, 20 ); 36 * // returns 0.0 37 * 38 * x = ldexp( -0.0, 39 ); 39 * // returns -0.0 40 * 41 * x = ldexp( NaN, -101 ); 42 * // returns NaN 43 * 44 * x = ldexp( Infinity, 11 ); 45 * // returns Infinity 46 * 47 * x = ldexp( -Infinity, -118 ); 48 * // returns -Infinity 49 */ 50 51 // MODULES // 52 53 var ldexp = require( './ldexp.js' ); 54 55 56 // EXPORTS // 57 58 module.exports = ldexp;