gcc-4.9/gcc/testsuite/gcc.target/i386/fma-check.h


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#include <stdlib.h>

#include "cpuid.h"

static void fma_test (void);

static void __attribute__ ((noinline)) do_test (void)
{
  fma_test ();
}

int
main ()
{
  unsigned int eax, ebx, ecx, edx;

  if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
    return 0;

  /* Run FMA test only if host has FMA support.  */
  if (ecx & bit_FMA)
    do_test ();

  return 0;
}