polyval_cd.js (1338B)
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 /* This is a generated file. Do not edit directly. */ 20 'use strict'; 21 22 // MAIN // 23 24 /** 25 * Evaluates a polynomial. 26 * 27 * ## Notes 28 * 29 * - The implementation uses [Horner's rule][horners-method] for efficient computation. 30 * 31 * [horners-method]: https://en.wikipedia.org/wiki/Horner%27s_method 32 * 33 * 34 * @private 35 * @param {number} x - value at which to evaluate the polynomial 36 * @returns {number} evaluated polynomial 37 */ 38 function evalpoly( x ) { 39 if ( x === 0.0 ) { 40 return 4.0; 41 } 42 return 4.0 + (x * (0.051002805623644606 + (x * (0.00031744202477503275 + (x * (0.0000012321035568588342 + (x * (3.067809975818878e-9 + (x * 4.077460400618806e-12))))))))); // eslint-disable-line max-len 43 } 44 45 46 // EXPORTS // 47 48 module.exports = evalpoly;