gcc/testsuite/gcc.dg/dfp/c23-float-dfp-5.c

   1 /* Test DEC_NAN defined in <float.h> with DFP support.  */
   2 /* { dg-options "-std=c23" } */
   3
   4 #include <float.h>
   5
   6 #ifndef DEC_NAN
   7 # error "DEC_NAN not defined"
   8 #endif
   9
  10 volatile _Decimal32 d = DEC_NAN;
  11
  12 extern void abort (void);
  13 extern void exit (int);
  14
  15 int
  16 main (void)
  17 {
  18   (void) _Generic (DEC_NAN, _Decimal32 : 0);
  19   if (!__builtin_isnan (DEC_NAN))
  20     abort ();
  21   if (!__builtin_isnan (d))
  22     abort ();
  23   exit (0);
  24 }