All files / csignumf/lib assign.js

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/**
* @license Apache-2.0
*
* Copyright (c) 2026 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 hypotf = require( '@stdlib/math/base/special/hypotf' );
var f32 = require( '@stdlib/number/float64/base/to-float32' );
 
 
// MAIN //
 
/**
* Evaluates the signum function of a single-precision complex floating-point number and assigns results to a provided output array.
*
* @param {number} re - real component
* @param {number} im - imaginary component
* @param {Collection} out - output array
* @param {integer} strideOut - stride length
* @param {NonNegativeInteger} offsetOut - starting index
* @returns {Collection} output array
*
* @example
* var Float32Array = require( '@stdlib/array/float32' );
*
* var out = assign( 3.0, -4.0, new Float32Array( 2 ), 1, 0 );
* // returns <Float32Array>[ ~0.6, ~-0.8 ]
*/
function assign( re, im, out, strideOut, offsetOut ) {
	var az;

	az = hypotf( re, im );
	if ( az === 0.0 ) {
		out[ offsetOut ] = re;
		out[ offsetOut+strideOut ] = im;
		return out;
	}
	out[ offsetOut ] = f32( re / az );
	out[ offsetOut+strideOut ] = f32( im / az );
	return out;
}
 
 
// EXPORTS //
 
module.exports = assign;