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) 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';
// MODULES //
var internalCompreal = require( './internal_compreal.js' );
// MAIN //
/**
* Computes the complex division.
*
* ## Notes
*
* - See figure 10 of [reference][@baudin:2012].
*
* [@baudin:2012]: https://arxiv.org/abs/1210.4539
*
* @private
* @param {number} re1 - real component
* @param {number} im1 - imaginary component
* @param {number} re2 - real component
* @param {number} im2 - imaginary component
* @returns {Array<number>} result
*/
function robustInternal( re1, im1, re2, im2 ) {
var out;
var r;
var t;
out = [ 0.0, 0.0 ];
r = im2 / re2;
t = 1.0 / ( re2 + (im2*r) );
out[ 0 ] = internalCompreal( re1, im1, re2, im2, r, t );
out[ 1 ] = internalCompreal( im1, -re1, re2, im2, r, t );
return out;
}
// EXPORTS //
module.exports = robustInternal;
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