It is also possible to enable F16C instructions on 32-bit Visual Studio builds,
so also check for the compiler's ability to build F16C code on Visual Studio
32-bit instead of just bailing out.
# if !defined(__amd64__) && !defined(__x86_64__)
# error "F16C intrinsics are only available on x86_64"
# endif
-#elif defined (_MSC_VER) && !defined (_M_X64) && !defined (_M_AMD64)
-# error "F16C intrinsics not supported on x86 MSVC builds"
#endif
-#if defined(__SSE__) || (_M_X64 > 0)
+#if defined(__SSE__) || defined(_MSC_VER)
# include <immintrin.h>
#else
# error "No F16C intrinsics available"