time-to-botec

index.js (1890B)

---

 /**
 * @license Apache-2.0
 *
 * Copyright (c) 2018 The Stdlib Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
 'use strict';
 
 /**
 * Evaluate a rational function.
 *
 * @module @stdlib/math/base/tools/evalrational
 *
 * @example
 * var evalrational = require( '@stdlib/math/base/tools/evalrational' );
 *
 * // 2x^3 + 4x^2 - 5x^1 - 6x^0 => degree 4
 * var P = [ -6.0, -5.0, 4.0, 2.0 ];
 *
 * // 0.5x^1 + 3x^0 => degree 2
 * var Q = [ 3.0, 0.5, 0.0, 0.0 ]; // zero-padded
 *
 * var v = evalrational( P, Q, 6.0 ); // => ( -6*6^0 - 5*6^1 + 4*6^2 + 2*6^3 ) / ( 3*6^0 + 0.5*6^1 + 0*6^2 + 0*6^3 ) = (-6-30+144+432)/(3+3)
 * // returns 90.0
 *
 * @example
 * var evalrational = require( '@stdlib/math/base/tools/evalrational' );
 *
 * var P = [ 20.0, 8.0, 3.0 ];
 * var Q = [ 10.0, 9.0, 1.0 ];
 *
 * var rational = evalrational.factory( P, Q );
 *
 * var v = rational( 10.0 ); // => (20*10^0 + 8*10^1 + 3*10^2) / (10*10^0 + 9*10^1 + 1*10^2) = (20+80+300)/(10+90+100)
 * // returns 2.0
 *
 * v = rational( 2.0 ); // => (20*2^0 + 8*2^1 + 3*2^2) / (10*2^0 + 9*2^1 + 1*2^2) = (20+16+12)/(10+18+4)
 * // returns 1.5
 */
 
 // MODULES //
 
 var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
 var evalrational = require( './evalrational.js' );
 var factory = require( './factory.js' );
 
 
 // MAIN //
 
 setReadOnly( evalrational, 'factory', factory );
 
 
 // EXPORTS //
 
 module.exports = evalrational;