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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 numelDimension = require( '@stdlib/ndarray/base/numel-dimension' );
var getStride = require( '@stdlib/ndarray/base/stride' );
var getOffset = require( '@stdlib/ndarray/base/offset' );
var getData = require( '@stdlib/ndarray/base/data-buffer' );
var strided = require( '@stdlib/blas/ext/base/cfill-equal' ).ndarray;
var ndarraylike2scalar = require( '@stdlib/ndarray/base/ndarraylike2scalar' );
// MAIN //
/**
* Replaces elements in a one-dimensional single-precision complex floating-point ndarray equal to a provided search element with a specified scalar constant.
*
* ## Notes
*
* - The function expects the following ndarrays:
*
* - a one-dimensional input ndarray.
* - a zero-dimensional ndarray containing the search element.
* - a zero-dimensional ndarray containing the scalar constant.
*
* - When comparing elements, the function checks for equality of real and imaginary components using the strict equality operator `===`. As a consequence, `NaN` components are considered distinct (i.e., as `NaN === NaN` always evaluates to `false`, elements having one or more `NaN` components are never replaced), and `-0` and `+0` are considered the same.
*
* @param {ArrayLikeObject<Object>} arrays - array-like object containing ndarrays
* @returns {ndarray} input ndarray
*
* @example
* var Complex64Vector = require( '@stdlib/ndarray/vector/complex64' );
* var scalar2ndarray = require( '@stdlib/ndarray/from-scalar' );
* var Complex64 = require( '@stdlib/complex/float32/ctor' );
*
* var x = new Complex64Vector( [ 0.0, 0.0, -2.0, 3.0, 0.0, 0.0, 4.0, -6.0 ] );
*
* var searchElement = scalar2ndarray( new Complex64( 0.0, 0.0 ), {
* 'dtype': 'complex64'
* });
*
* var alpha = scalar2ndarray( new Complex64( 5.0, 5.0 ), {
* 'dtype': 'complex64'
* });
*
* var out = cfillEqual( [ x, searchElement, alpha ] );
* // returns <ndarray>[ <Complex64>[ 5.0, 5.0 ], <Complex64>[ -2.0, 3.0 ], <Complex64>[ 5.0, 5.0 ], <Complex64>[ 4.0, -6.0 ] ]
*/
function cfillEqual( arrays ) {
var searchElement;
var alpha;
var x;
x = arrays[ 0 ];
searchElement = ndarraylike2scalar( arrays[ 1 ] );
alpha = ndarraylike2scalar( arrays[ 2 ] );
strided( numelDimension( x, 0 ), searchElement, alpha, getData( x ), getStride( x, 0 ), getOffset( x ) ); // eslint-disable-line max-len
return x;
}
// EXPORTS //
module.exports = cfillEqual;
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