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/**
* @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.
*/
/* 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 -0.20243350835593876;
}
if ( x < 0.0 ) {
ax = -x;
} else {
ax = x;
}
if ( ax <= 1.0 ) {
s1 = -0.20243350835593876 + (x * (0.10526468069939171 + (x * (8.3705032834312 + (x * (17.644729840837403 + (x * (-18.851064805871424 + (x * (-44.6382324441787 + (x * (17.445385985570866 + (x * (21.12946554483405 + (x * -3.6719225470772936))))))))))))))); // eslint-disable-line max-len
s2 = 1.0 + (x * (6.242641248542475 + (x * (3.971343795334387 + (x * (-28.66081804998 + (x * (-20.14326346804852 + (x * (48.560921310873994 + (x * (10.826866735546016 + (x * (-22.643693341313973 + (x * 1.7211476576120028))))))))))))))); // eslint-disable-line max-len
} else {
x = 1.0 / x;
s1 = -3.6719225470772936 + (x * (21.12946554483405 + (x * (17.445385985570866 + (x * (-44.6382324441787 + (x * (-18.851064805871424 + (x * (17.644729840837403 + (x * (8.3705032834312 + (x * (0.10526468069939171 + (x * -0.20243350835593876))))))))))))))); // eslint-disable-line max-len
s2 = 1.7211476576120028 + (x * (-22.643693341313973 + (x * (10.826866735546016 + (x * (48.560921310873994 + (x * (-20.14326346804852 + (x * (-28.66081804998 + (x * (3.971343795334387 + (x * (6.242641248542475 + (x * 1.0))))))))))))))); // eslint-disable-line max-len
}
return s1 / s2;
}
// EXPORTS //
module.exports = evalrational;
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