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1 /*
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2 * Copyright (c) 2003, 2007-14 Matteo Frigo
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3 * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
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4 *
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5 * This program is free software; you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation; either version 2 of the License, or
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8 * (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program; if not, write to the Free Software
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17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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18 *
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19 */
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20
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21 #include "ifftw.h"
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22
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23 #if HAVE_SSE2
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24 /* this file must be compiled with -msse/-msse2 or equivalent, and it will
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25 fail at runtime on a machine that does not support sse/sse2 */
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26 #include "simd-sse2.h"
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27
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28 /* This will produce -0.0f (or -0.0d) even on broken
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29 compilers that do not distinguish +0.0 from -0.0.
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30 I bet some are still around. */
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31 const union uvec X(sse2_pm) = {
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32 #ifdef FFTW_SINGLE
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33 { 0x00000000, 0x80000000, 0x00000000, 0x80000000 }
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34 #else
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35 { 0x00000000, 0x00000000, 0x00000000, 0x80000000 }
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36 #endif
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37 };
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38
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39 /* paranoia because of past compiler bugs */
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40 void X(check_alignment_of_sse2_pm)(void)
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41 {
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42 CK(ALIGNED(&X(sse2_pm)));
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43 }
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44 #endif
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