index.js (1103B)
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 * Natural logarithm of `1/2`. 23 * 24 * @module @stdlib/constants/float64/ln-half 25 * @type {number} 26 * 27 * @example 28 * var LN_HALF = require( '@stdlib/constants/float64/ln-half' ); 29 * // returns -0.6931471805599453 30 */ 31 32 33 // MAIN // 34 35 /** 36 * Natural logarithm of `1/2`. 37 * 38 * ```tex 39 * \ln (1/2) 40 * ``` 41 * 42 * @constant 43 * @type {number} 44 * @default -0.6931471805599453 45 */ 46 var LN_HALF = -0.69314718055994530941723212145817656807550013436025525412; 47 48 49 // EXPORTS // 50 51 module.exports = LN_HALF;