Chris@10: /*
Chris@10:  * Copyright (c) 2003, 2007-11 Matteo Frigo
Chris@10:  * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
Chris@10:  *
Chris@10:  * This program is free software; you can redistribute it and/or modify
Chris@10:  * it under the terms of the GNU General Public License as published by
Chris@10:  * the Free Software Foundation; either version 2 of the License, or
Chris@10:  * (at your option) any later version.
Chris@10:  *
Chris@10:  * This program is distributed in the hope that it will be useful,
Chris@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@10:  * GNU General Public License for more details.
Chris@10:  *
Chris@10:  * You should have received a copy of the GNU General Public License
Chris@10:  * along with this program; if not, write to the Free Software
Chris@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Chris@10:  *
Chris@10:  */
Chris@10: 
Chris@10: #include "ifftw.h"
Chris@10: 
Chris@10: #if HAVE_SSE2
Chris@10: /* this file must be compiled with -msse/-msse2 or equivalent, and it will
Chris@10:    fail at runtime on a machine that does not support sse/sse2 */
Chris@10: #include "simd-sse2.h"
Chris@10: 
Chris@10: /* This will produce -0.0f (or -0.0d) even on broken
Chris@10:    compilers that do not distinguish +0.0 from -0.0.
Chris@10:    I bet some are still around. */
Chris@10: const union uvec X(sse2_pm) = {
Chris@10: #ifdef FFTW_SINGLE
Chris@10:      { 0x00000000, 0x80000000, 0x00000000, 0x80000000 }
Chris@10: #else
Chris@10:      { 0x00000000, 0x00000000, 0x00000000, 0x80000000 }
Chris@10: #endif
Chris@10: };
Chris@10: 
Chris@10: /* paranoia because of past compiler bugs */
Chris@10: void X(check_alignment_of_sse2_pm)(void)
Chris@10: {
Chris@10:      CK(ALIGNED(&X(sse2_pm)));
Chris@10: }
Chris@10: #endif