3 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Brian Gough
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 #include "complex_internal.h"
23 FUNCTION(gsl_fft_real,unpack) (const BASE real_coefficient[],
24 BASE complex_coefficient[],
25 const size_t stride, const size_t n)
31 GSL_ERROR ("length n must be positive integer", GSL_EDOM);
34 for (i = 0; i < n; i++)
36 REAL(complex_coefficient,stride,i) = real_coefficient[i * stride];
37 IMAG(complex_coefficient,stride,i) = 0.0;