Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 15x 15x 15x 15x 15x 15x 15x 4x 4x 11x 11x 11x 11x 11x 11x 11x 15x 36x 36x 36x 11x 15x 3x 3x 3x 3x 3x | /**
* @license Apache-2.0
*
* Copyright (c) 2025 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 reinterpret = require( '@stdlib/strided/base/reinterpret-complex64' );
var scale = require( '@stdlib/complex/float64/base/scale' ).strided;
// MAIN //
/**
* Scales a single-precision complex floating-point vector by a single-precision floating-point constant.
*
* @param {PositiveInteger} N - number of indexed elements
* @param {number} alpha - constant
* @param {Complex64Array} x - input array
* @param {integer} strideX - `x` stride length
* @param {NonNegativeInteger} offsetX - starting `x` index
* @returns {Complex64Array} input array
*
* @example
* var Complex64Array = require( '@stdlib/array/complex64' );
* var Complex64 = require( '@stdlib/complex/float32/ctor' );
*
* var x = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ] );
*
* csscal( 3, 2.0, x, 1, 0 );
* // x => <Complex64Array>[ 2.0, 4.0, 6.0, 8.0, 10.0, 12.0 ]
*/
function csscal( N, alpha, x, strideX, offsetX ) {
var x32;
var ix;
var sx;
var i;
if ( N <= 0 || alpha === 1.0 ) {
return x;
}
// Reinterpret the input array as a real-valued array of interleaved real and imaginary components:
x32 = reinterpret( x, 0 );
// Adjust the stride and offset accordingly:
ix = offsetX * 2;
sx = strideX * 2;
for ( i = 0; i < N; i++ ) {
scale( alpha, x32, 1, ix, x32, 1, ix );
ix += sx;
}
return x;
}
// EXPORTS //
module.exports = csscal;
|