suppress warnings for Mingw
#if defined( _WIN32 )
# if (defined(_M_AMD64) || defined(_M_X64)) || _M_IX86_FP == 2
+# ifndef __SSE2__
# define __SSE2__
+# endif
# elif _M_IX86_FP == 1
+# ifndef __SSE__
# define __SSE__
# endif
# endif
+#endif
#if defined( __SSE__ ) || defined( __SSE2__ )
# include <xmmintrin.h>
