gcc/testsuite/gcc.target/i386/fma-check.h

   1 #include <stdlib.h>
   2
   3 #include "cpuid.h"
   4
   5 static void fma_test (void);
   6
   7 static void __attribute__ ((noinline)) do_test (void)
   8 {
   9   fma_test ();
  10 }
  11
  12 int
  13 main ()
  14 {
  15   unsigned int eax, ebx, ecx, edx;
  16
  17   if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
  18     return 0;
  19
  20   /* Run FMA test only if host has FMA support.  */
  21   if (ecx & bit_FMA)
  22     do_test ();
  23
  24   return 0;
  25 }