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| 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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /** * @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'; /** * Convert a real-valued double-precision floating-point array in FFTPACK half-complex format to a double-precision complex floating-point array. * * @module @stdlib/fft/base/fftpack/float64/hc2c * * @example * var Float64Array = require( '@stdlib/array/float64' ); * var Complex128Array = require( '@stdlib/array/complex128' ); * var floor = require( '@stdlib/math/base/special/floor' ); * var rffti = require( '@stdlib/fft/base/fftpack/float64/rffti' ); * var rfftf = require( '@stdlib/fft/base/fftpack/float64/rfftf' ); * var hc2c = require( '@stdlib/fft/base/fftpack/float64/hc2c' ); * * var N = 4; * var w = new Float64Array( ( 2*N ) + 34 ); * rffti( N, w, 1, 0 ); * * var r = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] ); * rfftf( N, r, 1, 0, w, 1, 0 ); * // r => <Float64Array>[ 10.0, -2.0, 2.0, -2.0 ] * * var out = new Complex128Array( floor( N/2 ) + 1 ); * hc2c( N, r, 1, 0, out, 1, 0 ); * // out => <Complex128Array>[ 10.0, 0.0, -2.0, 2.0, -2.0, 0.0 ] */ // MODULES // var main = require( './main.js' ); // EXPORTS // module.exports = main; |