native.js (1741B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2020 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 addon = require( './../src/addon.node' ); 24 25 26 // MAIN // 27 28 /** 29 * Sets the more significant 32 bits of a double-precision floating-point number. 30 * 31 * @private 32 * @param {number} x - double 33 * @param {uinteger32} high - unsigned 32-bit integer to replace the higher order word of `x` 34 * @returns {number} double having the same lower order word as `x` 35 * 36 * @example 37 * var high = 5 >>> 0; // => 0 00000000000 00000000000000000101 38 * 39 * var y = setHighWord( 3.14e201, high ); // => 0 00000000000 0000000000000000010110010011110010110101100010000010 40 * // returns 1.18350528745e-313 41 * 42 * @example 43 * var PINF = require( '@stdlib/constants/float64/pinf' ); // => 0 11111111111 00000000000000000000 00000000000000000000000000000000 44 * 45 * var high = 1072693248 >>> 0; // => 0 01111111111 00000000000000000000 46 * 47 * // Set the higher order bits of `+infinity` to return `1`: 48 * var y = setHighWord( PINF, high ); // => 0 01111111111 0000000000000000000000000000000000000000000000000000 49 * // returns 1.0 50 */ 51 function setHighWord( x, high ) { 52 return addon( x, high ); 53 } 54 55 56 // EXPORTS // 57 58 module.exports = setHighWord;