cannam@127: /*
cannam@127:  * Copyright (c) 2003, 2007-14 Matteo Frigo
cannam@127:  * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
cannam@127:  *
cannam@127:  * This program is free software; you can redistribute it and/or modify
cannam@127:  * it under the terms of the GNU General Public License as published by
cannam@127:  * the Free Software Foundation; either version 2 of the License, or
cannam@127:  * (at your option) any later version.
cannam@127:  *
cannam@127:  * This program is distributed in the hope that it will be useful,
cannam@127:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@127:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@127:  * GNU General Public License for more details.
cannam@127:  *
cannam@127:  * You should have received a copy of the GNU General Public License
cannam@127:  * along with this program; if not, write to the Free Software
cannam@127:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
cannam@127:  *
cannam@127:  */
cannam@127: 
cannam@127: #include "rdft.h"
cannam@127: 
cannam@127: /* Deal with annoyance because the tensor (is,os) applies to
cannam@127:    (r,rio/iio) for R2HC and vice-versa for HC2R.  We originally had
cannam@127:    (is,os) always apply to (r,rio/iio), but this causes other
cannam@127:    headaches with the tensor functions. */
cannam@127: void X(rdft2_strides)(rdft_kind kind, const iodim *d, INT *rs, INT *cs)
cannam@127: {
cannam@127:      if (kind == R2HC) {
cannam@127: 	  *rs = d->is;
cannam@127: 	  *cs = d->os;
cannam@127:      }
cannam@127:      else {
cannam@127: 	  A(kind == HC2R);
cannam@127: 	  *rs = d->os;
cannam@127: 	  *cs = d->is;
cannam@127:      }
cannam@127: }