mirror of
https://github.com/tildearrow/furnace.git
synced 2024-12-18 14:30:15 +00:00
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2003, 2007-14 Matteo Frigo
|
|
* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include "kernel/ifftw.h"
|
|
|
|
/* decompose complex pointer into real and imaginary parts.
|
|
Flip real and imaginary if there the sign does not match
|
|
FFTW's idea of what the sign should be */
|
|
|
|
void X(extract_reim)(int sign, R *c, R **r, R **i)
|
|
{
|
|
if (sign == FFT_SIGN) {
|
|
*r = c + 0;
|
|
*i = c + 1;
|
|
} else {
|
|
*r = c + 1;
|
|
*i = c + 0;
|
|
}
|
|
}
|