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* @license Apache-2.0
*
* Copyright (c) 2021 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';
// MAIN //
/**
* Applies a unary function to a double-precision complex floating-point strided input array and assigns results to a double-precision complex floating-point strided output array.
*
* @param {NonNegativeInteger} N - number of indexed elements
* @param {Complex128Array} x - input array
* @param {integer} strideX - `x` stride length
* @param {NonNegativeInteger} offsetX - starting `x` index
* @param {Complex128Array} y - destination array
* @param {integer} strideY - `y` stride length
* @param {NonNegativeInteger} offsetY - starting `y` index
* @param {Function} fcn - unary function to apply
* @returns {Complex128Array} `y`
*
* @example
* var Complex128Array = require( '@stdlib/array/complex128' );
* var real = require( '@stdlib/complex/float64/real' );
* var imag = require( '@stdlib/complex/float64/imag' );
* var Complex128 = require( '@stdlib/complex/float64/ctor' );
*
* function scale( x ) {
* var re = real( x );
* var im = imag( x );
* return new Complex128( re*10.0, im*10.0 );
* }
*
* var x = new Complex128Array( [ 1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0 ] );
* var y = new Complex128Array( x.length );
*
* zmap( x.length, x, 1, 0, y, 1, 0, scale );
*
* var v = y.get( 0 );
* // returns <Complex128>[ 10.0, 10.0 ]
*/
function zmap( N, x, strideX, offsetX, y, strideY, offsetY, fcn ) {
var ix;
var iy;
var i;
if ( N <= 0 ) {
return y;
}
ix = offsetX;
iy = offsetY;
for ( i = 0; i < N; i++ ) {
y.set( fcn( x.get( ix ) ), iy );
ix += strideX;
iy += strideY;
}
return y;
}
// EXPORTS //
module.exports = zmap;
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