gcc/testsuite/gcc.dg/torture/float128-extend-inf.c

   1 /* Test infinities convert to __float128 infinity.  Bug 77265.  */
   2 /* { dg-do run } */
   3 /* { dg-require-effective-target __float128 } */
   4 /* { dg-require-effective-target base_quadfloat_support } */
   5 /* { dg-add-options __float128 } */
   6
   7 extern void abort (void);
   8 extern void exit (int);
   9
  10 volatile float finf = __builtin_inff ();
  11 volatile double dinf = __builtin_inf ();
  12 volatile long double ldinf = __builtin_infl ();
  13 volatile float nfinf = -__builtin_inff ();
  14 volatile double ndinf = -__builtin_inf ();
  15 volatile long double nldinf = -__builtin_infl ();
  16
  17 int
  18 main (void)
  19 {
  20   volatile __float128 r;
  21   r = (__float128) finf;
  22   if (!__builtin_isinf (r) || __builtin_signbit (r) != 0)
  23     abort ();
  24   r = (__float128) dinf;
  25   if (!__builtin_isinf (r) || __builtin_signbit (r) != 0)
  26     abort ();
  27   r = (__float128) ldinf;
  28   if (!__builtin_isinf (r) || __builtin_signbit (r) != 0)
  29     abort ();
  30   r = (__float128) nfinf;
  31   if (!__builtin_isinf (r) || __builtin_signbit (r) == 0)
  32     abort ();
  33   r = (__float128) ndinf;
  34   if (!__builtin_isinf (r) || __builtin_signbit (r) == 0)
  35     abort ();
  36   r = (__float128) nldinf;
  37   if (!__builtin_isinf (r) || __builtin_signbit (r) == 0)
  38     abort ();
  39   exit (0);
  40 }