hypot1b.js (1170B)
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 abs = require( './../../../../../base/special/labs' ); 24 25 26 // MAIN // 27 28 /** 29 * Computes the hypotenuse using the alpha max plus beta min algorithm, where `alpha = 1` and `beta = 1/2`. 30 * 31 * @private 32 * @param {integer32} x - integer 33 * @param {integer32} y - integer 34 * @returns {number} hypotenuse 35 * 36 * @example 37 * var h = hypot( 5.0, 12.0 ); 38 * // returns <number> 39 */ 40 function hypot( x, y ) { 41 x = abs( x ); 42 y = abs( y ); 43 if ( x > y ) { 44 return x + (y>>>1); 45 } 46 return (x>>>1) + y; 47 } 48 49 50 // EXPORTS // 51 52 module.exports = hypot;