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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 reinterpret = require( '@stdlib/strided/base/reinterpret-complex128' );
var resolveTrans = require( '@stdlib/blas/base/transpose-operation-resolve-enum' );
var format = require( '@stdlib/string/format' );
var addon = require( './../src/addon.node' );
// MAIN //
/**
* Performs one of the matrix-vector operations `y = α*A*x + β*y`, `y = α*A^T*x + β*y`, or `y = α*A^H*x + β*y`, using alternative indexing semantics and where `α` and `β` are scalars, `x` and `y` are vectors, and `A` is an `M` by `N` matrix.
*
* @param {string} trans - specifies whether `A` should be transposed, conjugate-transposed, or not transposed
* @param {NonNegativeInteger} M - number of rows in the matrix `A`
* @param {NonNegativeInteger} N - number of columns in the matrix `A`
* @param {Complex128} alpha - scalar constant
* @param {Complex128Array} A - input matrix
* @param {integer} strideA1 - stride of the first dimension of `A`
* @param {integer} strideA2 - stride of the second dimension of `A`
* @param {NonNegativeInteger} offsetA - starting index for `A`
* @param {Complex128Array} x - first input vector
* @param {integer} strideX - `x` stride length
* @param {NonNegativeInteger} offsetX - starting index for `x`
* @param {Complex128} beta - scalar constant
* @param {Complex128Array} y - second input vector
* @param {integer} strideY - `y` stride length
* @param {NonNegativeInteger} offsetY - starting index for `y`
* @throws {RangeError} tenth argument must be non-zero
* @throws {RangeError} fourteenth argument must be non-zero
* @returns {Complex128Array} `y`
*
* @example
* var Complex128Array = require( '@stdlib/array/complex128' );
* var Complex128 = require( '@stdlib/complex/float64/ctor' );
*
* var A = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0 ] );
* var x = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ] );
* var y = new Complex128Array( [ 1.0, 2.0, 3.0, 4.0 ] );
*
* zgemv( 'no-transpose', 2, 3, new Complex128( 1.0, 0.0 ), A, 3, 1, 0, x, 1, 0, new Complex128( 1.0, 0.0 ), y, 1, 0 );
* // y => <Complex128Array>
*/
function zgemv( trans, M, N, alpha, A, strideA1, strideA2, offsetA, x, strideX, offsetX, beta, y, strideY, offsetY ) { // eslint-disable-line max-params, max-len
var viewA;
var viewX;
var viewY;
if ( M < 0 ) {
throw new RangeError( format( 'invalid argument. Second argument must be a nonnegative integer. Value: `%d`.', M ) );
}
if ( N < 0 ) {
throw new RangeError( format( 'invalid argument. Third argument must be a nonnegative integer. Value: `%d`.', N ) );
}
if ( strideX === 0 ) {
throw new RangeError( format( 'invalid argument. Tenth argument must be non-zero. Value: `%d`.', strideX ) );
}
if ( strideY === 0 ) {
throw new RangeError( format( 'invalid argument. Fourteenth argument must be non-zero. Value: `%d`.', strideY ) );
}
viewA = reinterpret( A, 0 );
viewX = reinterpret( x, 0 );
viewY = reinterpret( y, 0 );
addon.ndarray( resolveTrans( trans ), M, N, alpha, viewA, strideA1, strideA2, offsetA, viewX, strideX, offsetX, beta, viewY, strideY, offsetY ); // eslint-disable-line max-len
return y;
}
// EXPORTS //
module.exports = zgemv;
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