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#ifndef SIGNAL_SUPPRESS

#include <signal.h>

#endif

float fnan = 1.0f/0.0f - 1.0f/0.0f;

float x = 1.0f;

void leave ()

{

  exit (0);

}

main ()

{

#if ! defined (__vax__) && ! defined (_CRAY)

  /* Move this line earlier, for architectures (like alpha) that issue

     SIGFPE on the first comparisons. */

#ifndef SIGNAL_SUPPRESS

  /* Some machines catches a SIGFPE when a NaN is compared.

     Let this test succeed o such machines.  */

  signal (SIGFPE, leave);

#endif

  /* NaN is an IEEE unordered operand.  All these test should be false.  */

  if (fnan == fnan)

    abort ();

  if (fnan != x)

    x = 1.0;

  else

    abort ();

  if (fnan < x)

    abort ();

  if (fnan > x)

    abort ();

  if (fnan <= x)

    abort ();

  if (fnan >= x)

    abort ();

  if (fnan == x)

    abort ();

#endif

  exit (0);

}