cannam@95: /*
cannam@95:  * Copyright (c) 2003, 2007-11 Matteo Frigo
cannam@95:  * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
cannam@95:  *
cannam@95:  * This program is free software; you can redistribute it and/or modify
cannam@95:  * it under the terms of the GNU General Public License as published by
cannam@95:  * the Free Software Foundation; either version 2 of the License, or
cannam@95:  * (at your option) any later version.
cannam@95:  *
cannam@95:  * This program is distributed in the hope that it will be useful,
cannam@95:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@95:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@95:  * GNU General Public License for more details.
cannam@95:  *
cannam@95:  * You should have received a copy of the GNU General Public License
cannam@95:  * along with this program; if not, write to the Free Software
cannam@95:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
cannam@95:  *
cannam@95:  */
cannam@95: 
cannam@95: #include "ifftw.h"
cannam@95: 
cannam@95: #if HAVE_SSE2
cannam@95: /* this file must be compiled with -msse/-msse2 or equivalent, and it will
cannam@95:    fail at runtime on a machine that does not support sse/sse2 */
cannam@95: #include "simd-sse2.h"
cannam@95: 
cannam@95: /* This will produce -0.0f (or -0.0d) even on broken
cannam@95:    compilers that do not distinguish +0.0 from -0.0.
cannam@95:    I bet some are still around. */
cannam@95: const union uvec X(sse2_pm) = {
cannam@95: #ifdef FFTW_SINGLE
cannam@95:      { 0x00000000, 0x80000000, 0x00000000, 0x80000000 }
cannam@95: #else
cannam@95:      { 0x00000000, 0x00000000, 0x00000000, 0x80000000 }
cannam@95: #endif
cannam@95: };
cannam@95: 
cannam@95: /* paranoia because of past compiler bugs */
cannam@95: void X(check_alignment_of_sse2_pm)(void)
cannam@95: {
cannam@95:      CK(ALIGNED(&X(sse2_pm)));
cannam@95: }
cannam@95: #endif