gcc/testsuite/c-c++-common/pr109884.c

   1 /* PR c++/109884 */
   2 /* PowerPC doesn't define these as builtins, but macros expanding to
   3    *f128 builtins.  */
   4 /* { dg-do compile { target { __float128 && { { c || c++11 } && { ! powerpc*-*-* } } } } } */
   5 /* { dg-add-options __float128 } */
   6
   7 #ifdef __cplusplus
   8 template <typename T, typename U>
   9 struct is_same {
  10   static const bool value = false;
  11 };
  12
  13 template <typename T>
  14 struct is_same <T, T> {
  15   static const bool value = true;
  16 };
  17 #define HAS_TYPE(E, U) static_assert (is_same <decltype (E), U>::value, "")
  18 #else
  19 #define HAS_TYPE(E, U) _Static_assert (_Generic (E, default : 0, U : 1), "")
  20 #endif
  21
  22 void
  23 foo ()
  24 {
  25   __float128 a = 0;
  26   HAS_TYPE (__builtin_infq (), __float128);
  27   HAS_TYPE (__builtin_huge_valq (), __float128);
  28   HAS_TYPE (__builtin_nanq (""), __float128);
  29   HAS_TYPE (__builtin_nansq (""), __float128);
  30   HAS_TYPE (__builtin_fabsq (a), __float128);
  31   HAS_TYPE (__builtin_copysignq (a, a), __float128);
  32 }