native.js (1218B)
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 addon = require( './../src/addon.node' ); 24 25 26 // MAIN // 27 28 /** 29 * Tests if a double-precision floating-point numeric value is negative zero. 30 * 31 * @private 32 * @param {number} x - value to test 33 * @returns {boolean} boolean indicating whether the value is negative zero 34 * 35 * @example 36 * var bool = isNegativeZero( -0.0 ); 37 * // returns true 38 * 39 * @example 40 * var bool = isNegativeZero( 0.0 ); 41 * // returns false 42 */ 43 function isNegativeZero( x ) { 44 return Boolean( addon( x ) ); // TODO: import stdlib package @stdlib/boolean/ctor 45 } 46 47 48 // EXPORTS // 49 50 module.exports = isNegativeZero;