Chris@42: /*
Chris@42:  * Copyright (c) 2003, 2007-14 Matteo Frigo
Chris@42:  * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
Chris@42:  *
Chris@42:  * This program is free software; you can redistribute it and/or modify
Chris@42:  * it under the terms of the GNU General Public License as published by
Chris@42:  * the Free Software Foundation; either version 2 of the License, or
Chris@42:  * (at your option) any later version.
Chris@42:  *
Chris@42:  * This program is distributed in the hope that it will be useful,
Chris@42:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@42:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@42:  * GNU General Public License for more details.
Chris@42:  *
Chris@42:  * You should have received a copy of the GNU General Public License
Chris@42:  * along with this program; if not, write to the Free Software
Chris@42:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Chris@42:  *
Chris@42:  */
Chris@42: 
Chris@42: #include "rdft.h"
Chris@42: 
Chris@42: /* Deal with annoyance because the tensor (is,os) applies to
Chris@42:    (r,rio/iio) for R2HC and vice-versa for HC2R.  We originally had
Chris@42:    (is,os) always apply to (r,rio/iio), but this causes other
Chris@42:    headaches with the tensor functions. */
Chris@42: void X(rdft2_strides)(rdft_kind kind, const iodim *d, INT *rs, INT *cs)
Chris@42: {
Chris@42:      if (kind == R2HC) {
Chris@42: 	  *rs = d->is;
Chris@42: 	  *cs = d->os;
Chris@42:      }
Chris@42:      else {
Chris@42: 	  A(kind == HC2R);
Chris@42: 	  *rs = d->os;
Chris@42: 	  *cs = d->is;
Chris@42:      }
Chris@42: }