comparison src/fftw-3.3.3/simd-support/sse2-nonportable.c @ 10:37bf6b4a2645

Add FFTW3

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