Press n or j to go to the next uncovered block, b, p or k for the previous block.
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* @license Apache-2.0
*
* Copyright (c) 2024 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.
*/
/* This is a generated file. Do not edit directly. */
'use strict';
// MAIN //
/**
* Evaluates a rational function (i.e., the ratio of two polynomials described by the coefficients stored in \\(P\\) and \\(Q\\)).
*
* ## Notes
*
* - Coefficients should be sorted in ascending degree.
* - The implementation uses [Horner's rule][horners-method] for efficient computation.
*
* [horners-method]: https://en.wikipedia.org/wiki/Horner%27s_method
*
* @private
* @param {number} x - value at which to evaluate the rational function
* @returns {number} evaluated rational function
*/
function evalrational( x ) {
var ax;
var s1;
var s2;
if ( x === 0.0 ) {
return 1.0;
}
if ( x < 0.0 ) {
ax = -x;
} else {
ax = x;
}
if ( ax <= 1.0 ) {
s1 = 1.0 + (x * (0.4942148268014971 + (x * (0.20744822764843598 + (x * (0.04763678004571372 + (x * (0.010421379756176158 + (x * (0.0011913514700658638 + (x * (0.00016011952247675185 + (x * 0.0))))))))))))); // eslint-disable-line max-len
s2 = 1.0 + (x * (0.0714304917030273 + (x * (-0.23459179571824335 + (x * (0.035823639860549865 + (x * (0.011813978522206043 + (x * (-0.004456419138517973 + (x * (0.0005396055804933034 + (x * -0.000023158187332412014))))))))))))); // eslint-disable-line max-len
} else {
x = 1.0 / x;
s1 = 0.0 + (x * (0.00016011952247675185 + (x * (0.0011913514700658638 + (x * (0.010421379756176158 + (x * (0.04763678004571372 + (x * (0.20744822764843598 + (x * (0.4942148268014971 + (x * 1.0))))))))))))); // eslint-disable-line max-len
s2 = -0.000023158187332412014 + (x * (0.0005396055804933034 + (x * (-0.004456419138517973 + (x * (0.011813978522206043 + (x * (0.035823639860549865 + (x * (-0.23459179571824335 + (x * (0.0714304917030273 + (x * 1.0))))))))))))); // eslint-disable-line max-len
}
return s1 / s2;
}
// EXPORTS //
module.exports = evalrational;
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