gcc/testsuite/gcc.dg/dfp/c23-float-dfp-6.c

   1 /* Test DEC_NAN macro.  Runtime exceptions test, to verify NaN is
   2    quiet not signaling.  (This would only actually fail for a
   3    signaling NaN in the hardware DFP case, because the software DFP
   4    support in libgcc does not integrate with hardware exceptions.)  */
   5 /* { dg-require-effective-target fenv_exceptions } */
   6 /* { dg-options "-std=c23" } */
   7
   8 #include <fenv.h>
   9 #include <float.h>
  10
  11 #ifndef DEC_NAN
  12 # error "DEC_NAN not defined"
  13 #endif
  14
  15 volatile _Decimal32 d = DEC_NAN;
  16
  17 extern void abort (void);
  18 extern void exit (int);
  19
  20 int
  21 main (void)
  22 {
  23   d += d;
  24   if (fetestexcept (FE_INVALID))
  25     abort ();
  26   exit (0);
  27 }