/** * @license Apache-2.0 * * Copyright (c) 2020 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 Float32Array = require( '@stdlib/array/float32' ); var addon = require( './../src/addon.node' ); // MAIN // /** * Copies values from one complex single-precision floating-point vector to another complex single-precision floating-point vector. * * @param {PositiveInteger} N - number of values to copy * @param {Complex64Array} x - input array * @param {integer} strideX - `x` stride length * @param {NonNegativeInteger} offsetX - starting `x` index * @param {Complex64Array} y - destination array * @param {integer} strideY - `y` stride length * @param {NonNegativeInteger} offsetY - starting `y` index * @returns {Complex64Array} `y` * * @example * var Complex64Array = require( '@stdlib/array/complex64' ); * var real = require( '@stdlib/complex/real' ); * var imag = require( '@stdlib/complex/imag' ); * * var x = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ] ); * var y = new Complex64Array( [ 7.0, 8.0, 9.0, 10.0, 11.0, 12.0 ] ); * * ccopy( x.length, x, 1, 0, y, 1, 0 ); * * var z = y.get( 0 ); * // returns * * var re = real( z ); * // returns 1.0 * * var im = imag( z ); * // returns 2.0 */ function ccopy( N, x, strideX, offsetX, y, strideY, offsetY ) { var viewX; var viewY; if ( strideX < 0 ) { offsetX += (N-1) * strideX; } if ( strideY < 0 ) { offsetY += (N-1) * strideY; } viewX = new Float32Array( x.buffer, x.byteOffset+(x.BYTES_PER_ELEMENT*offsetX), 2*(x.length-offsetX) ); // eslint-disable-line max-len viewY = new Float32Array( y.buffer, y.byteOffset+(y.BYTES_PER_ELEMENT*offsetY), 2*(y.length-offsetY) ); // eslint-disable-line max-len addon( N, viewX, strideX, viewY, strideY ); return y; } // EXPORTS // module.exports = ccopy;