clang/test/C/C11/n1464.c

   1 // RUN: %clang_cc1 -verify %s
   2 // expected-no-diagnostics
   3
   4 /* WG14 N1464: ???
   5  * Creation of complex value
   6  */
   7
   8 // The paper is about the CMPLX macros, which Clang supports via the
   9 // __builtin_complex builtin function. Test the basic functionality.
  10 _Static_assert(__builtin_complex(5.0, 2.0) == 5.0 + 1.0j * 2.0, "");
  11 _Static_assert(__builtin_complex(5.0f, 2.0f) == 5.0f + 1.0j * 2.0f, "");
  12 _Static_assert(__builtin_complex(5.0L, 2.0L) == 5.0L + 1.0j * 2.0L, "");
  13
  14 // Test the edge case involving NaN or infinity.
  15 #define INF(type) (type)__builtin_inf()
  16 #define NAN(type) (type)__builtin_nan("")
  17 _Static_assert(__builtin_complex(5.0f, INF(float)) != 5.0f + 1.0j * INF(float), "");
  18 _Static_assert(__builtin_complex(5.0, INF(double)) != 5.0 + 1.0j * INF(double), "");
  19 _Static_assert(__builtin_complex(5.0L, INF(long double)) != 5.0L + 1.0j * INF(long double), "");
  20 _Static_assert(__builtin_complex(5.0f, NAN(float)) != 5.0f + 1.0j * NAN(float), "");
  21 _Static_assert(__builtin_complex(5.0, NAN(double)) != 5.0 + 1.0j * NAN(double), "");
  22 _Static_assert(__builtin_complex(5.0L, NAN(long double)) != 5.0L + 1.0j * NAN(long double), "");