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 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | 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 3x 3x 3x 3x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 19x 4x 4x 15x 15x 15x 15x 15x 15x 15x 15x 15x 15x 15x 15x 15x 19x 34x 34x 34x 34x 15x 19x 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 muladd = require( '@stdlib/complex/float64/base/mul-add' ).strided;
var reinterpret = require( '@stdlib/strided/base/reinterpret-complex128' );
// MAIN //
/**
* Computes the dot product of two double-precision complex floating-point vectors.
*
* @param {integer} N - number of indexed elements
* @param {Complex128Array} x - first input array
* @param {integer} strideX - `x` stride length
* @param {NonNegativeInteger} offsetX - starting index for `x`
* @param {Complex128Array} y - second input array
* @param {integer} strideY - `y` stride length
* @param {NonNegativeInteger} offsetY - starting index for `y`
* @param {Complex128Array} out - output array
* @param {NonNegativeInteger} offsetOut - starting index for `out`
* @returns {Complex128Array} dot product array
*
* @example
* var Complex128Array = require( '@stdlib/array/complex128' );
*
* var x = new Complex128Array( [ 4.0, 2.0, -3.0, 5.0, -1.0, 7.0 ] );
* var y = new Complex128Array( [ 2.0, 6.0, -1.0, -4.0, 8.0, 9.0 ] );
*
* var z = zdotu( 3, x, 1, 0, y, 1, 0, new Complex128Array( 1 ), 0 );
* // returns <Complex128Array>[ -52.0, 82.0 ]
*/
function zdotu( N, x, strideX, offsetX, y, strideY, offsetY, out, offsetOut ) {
var viewOut;
var viewX;
var viewY;
var ix;
var iy;
var io;
var sx;
var sy;
var i;
if ( N <= 0 ) {
return out;
}
viewX = reinterpret( x, 0 );
viewY = reinterpret( y, 0 );
viewOut = reinterpret( out, 0 );
ix = offsetX * 2;
iy = offsetY * 2;
io = offsetOut * 2;
sx = strideX * 2;
sy = strideY * 2;
viewOut[ io ] = 0.0;
viewOut[ io + 1 ] = 0.0;
for ( i = 0; i < N; i++ ) {
muladd( viewX, 1, ix, viewY, 1, iy, viewOut, 1, io, viewOut, 1, io );
ix += sx;
iy += sy;
}
return out;
}
// EXPORTS //
module.exports = zdotu;
|