index.js (1339B)
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 * Fourth root of double-precision floating-point epsilon. 23 * 24 * @module @stdlib/constants/float64/fourth-root-eps 25 * @type {number} 26 * 27 * @example 28 * var FLOAT64_FOURTH_ROOT_EPS = require( '@stdlib/constants/float64/fourth-root-eps' ); 29 * // returns 0.0001220703125 30 */ 31 32 33 // MAIN // 34 35 /** 36 * Fourth root of double-precision floating-point epsilon. 37 * 38 * ```tex 39 * \sqrt{\sqrt{\frac{1}{2^{52}}}} 40 * ``` 41 * 42 * @constant 43 * @type {number} 44 * @default 0.0001220703125 45 * @see [IEEE 754]{@link https://en.wikipedia.org/wiki/IEEE_754-1985} 46 * @see [Machine Epsilon]{@link https://en.wikipedia.org/wiki/Machine_epsilon} 47 */ 48 var FLOAT64_FOURTH_ROOT_EPS = 0.0001220703125; 49 50 51 // EXPORTS // 52 53 module.exports = FLOAT64_FOURTH_ROOT_EPS;