/*
* Copyright (c) 2003, 2007-11 Matteo Frigo
* Copyright (c) 2003, 2007-11 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "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;
}
}