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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 copysignf = require( '@stdlib/math/base/special/copysignf' );
var sincosf = require( '@stdlib/math/base/special/sincosf' ).assign;
var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
var isInfinitef = require( '@stdlib/math/base/assert/is-infinitef' );
var expf = require( '@stdlib/math/base/special/expf' );
var f32 = require( '@stdlib/number/float64/base/to-float32' );
var PINF = require( '@stdlib/constants/float32/pinf' );
var NINF = require( '@stdlib/constants/float32/ninf' );
// VARIABLES //
var WORKSPACE = [ 0.0, 0.0 ];
// MAIN //
/**
* Evaluates the exponential function for 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( 0.0, 0.0, new Float32Array( 2 ), 1, 0 );
* // returns <Float32Array>[ 1.0, 0.0 ]
*/
function assign( re, im, out, strideOut, offsetOut ) {
var e;
if ( isnanf( re ) ) {
out[ offsetOut ] = NaN;
out[ offsetOut+strideOut ] = ( im === 0.0 ) ? im : NaN;
return out;
}
if ( isInfinitef( im ) ) {
if ( re === PINF ) {
out[ offsetOut ] = NINF;
out[ offsetOut+strideOut ] = NaN;
return out;
}
if ( re === NINF ) {
out[ offsetOut ] = -0.0;
out[ offsetOut+strideOut ] = copysignf( 0.0, im );
return out;
}
out[ offsetOut ] = NaN;
out[ offsetOut+strideOut ] = NaN;
return out;
}
e = expf( re );
if ( im === 0.0 ) {
out[ offsetOut ] = e;
out[ offsetOut+strideOut ] = im;
return out;
}
sincosf( im, WORKSPACE, 1, 0 );
out[ offsetOut ] = f32( WORKSPACE[ 1 ] * e );
out[ offsetOut+strideOut ] = f32( WORKSPACE[ 0 ] * e );
return out;
}
// EXPORTS //
module.exports = assign;
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