cannam@167: /*
cannam@167:  * Copyright (c) 2003, 2007-14 Matteo Frigo
cannam@167:  * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
cannam@167:  *
cannam@167:  * This program is free software; you can redistribute it and/or modify
cannam@167:  * it under the terms of the GNU General Public License as published by
cannam@167:  * the Free Software Foundation; either version 2 of the License, or
cannam@167:  * (at your option) any later version.
cannam@167:  *
cannam@167:  * This program is distributed in the hope that it will be useful,
cannam@167:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@167:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@167:  * GNU General Public License for more details.
cannam@167:  *
cannam@167:  * You should have received a copy of the GNU General Public License
cannam@167:  * along with this program; if not, write to the Free Software
cannam@167:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
cannam@167:  *
cannam@167:  */
cannam@167: 
cannam@167: #include "kernel/ifftw.h"
cannam@167: 
cannam@167: /* decompose complex pointer into real and imaginary parts.
cannam@167:    Flip real and imaginary if there the sign does not match
cannam@167:    FFTW's idea of what the sign should be */
cannam@167: 
cannam@167: void X(extract_reim)(int sign, R *c, R **r, R **i)
cannam@167: {
cannam@167:      if (sign == FFT_SIGN) {
cannam@167:           *r = c + 0;
cannam@167:           *i = c + 1;
cannam@167:      } else {
cannam@167:           *r = c + 1;
cannam@167:           *i = c + 0;
cannam@167:      }
cannam@167: }