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* @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 stride2offset = require( '@stdlib/strided/base/stride2offset' );
var ndarray = require( './ndarray.js' );
// MAIN //
/**
* Applies a vector of real plane rotations to elements of real vectors `X` and `Y`.
*
* @param {NonNegativeInteger} N - number of plane rotations to apply
* @param {Float64Array} X - first input vector
* @param {integer} strideX - `X` stride length
* @param {Float64Array} Y - second input vector
* @param {integer} strideY - `Y` stride length
* @param {Float64Array} C - vector of cosines of plane rotations
* @param {Float64Array} S - vector of sines of plane rotations
* @param {integer} strideCS - `CS` stride length
* @returns {Float64Array} `Y`
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
*
* var X = new Float64Array( [ 1.0, 1.0 ] );
* var Y = new Float64Array( [ 1.0, 1.0 ] );
* var C = new Float64Array( [ 1.0, 1.0 ] );
* var S = new Float64Array( [ 0.0, 0.0 ] );
*
* dlartv( 2, X, 1, Y, 1, C, S, 1 );
* // X => <Float64Array>[ 1.0, 1.0 ]
* // Y => <Float64Array>[ 1.0, 1.0 ]
*/
function dlartv( N, X, strideX, Y, strideY, C, S, strideCS ) {
var ocs = stride2offset( N, strideCS );
var ox = stride2offset( N, strideX );
var oy = stride2offset( N, strideY );
return ndarray( N, X, strideX, ox, Y, strideY, oy, C, strideCS, ocs, S, strideCS, ocs );
}
// EXPORTS //
module.exports = dlartv;
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