#include #include "cpuid.h" static void xop_test (void); int main () { unsigned int eax, ebx, ecx, edx; if (!__get_cpuid (0x80000001, &eax, &ebx, &ecx, &edx)) return 0; /* Run XOP test only if host has XOP support. */ if (ecx & bit_XOP) xop_test (); exit (0); }