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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 23x 23x 23x 23x 23x 6x 6x 17x 17x 17x 23x 2x 2x 2x 2x 2x | /**
* @license Apache-2.0
*
* Copyright (c) 2024 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 plane rotation.
*
* @param {PositiveInteger} N - number of indexed elements
* @param {Float64Array} x - first input array
* @param {integer} strideX - `x` stride length
* @param {Float64Array} y - second input array
* @param {integer} strideY - `y` stride length
* @param {number} c - cosine of the angle of rotation
* @param {number} s - sine of the angle of rotation
* @returns {Float64Array} `y`
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
*
* var x = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0 ] );
* var y = new Float64Array( [ 6.0, 7.0, 8.0, 9.0, 10.0 ] );
*
* drot( x.length, x, 1, y, 1, 0.8, 0.6 );
* // x => <Float64Array>[ ~4.4, ~5.8, 7.2, 8.6, 10.0 ]
* // y => <Float64Array>[ ~4.2, 4.4, 4.6, 4.8, 5.0 ]
*/
function drot( N, x, strideX, y, strideY, c, s ) {
var ix;
var iy;
if ( N <= 0 ) {
return y;
}
ix = stride2offset( N, strideX );
iy = stride2offset( N, strideY );
return ndarray( N, x, strideX, ix, y, strideY, iy, c, s );
}
// EXPORTS //
module.exports = drot;
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