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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // test numeric_limits
     11 
     12 // round_style
     13 
     14 #include <limits>
     15 
     16 template <class T, std::float_round_style expected>
     17 void
     18 test()
     19 {
     20     static_assert(std::numeric_limits<T>::round_style == expected, "round_style test 1");
     21     static_assert(std::numeric_limits<const T>::round_style == expected, "round_style test 2");
     22     static_assert(std::numeric_limits<volatile T>::round_style == expected, "round_style test 3");
     23     static_assert(std::numeric_limits<const volatile T>::round_style == expected, "round_style test 4");
     24 }
     25 
     26 int main()
     27 {
     28     test<bool, std::round_toward_zero>();
     29     test<char, std::round_toward_zero>();
     30     test<signed char, std::round_toward_zero>();
     31     test<unsigned char, std::round_toward_zero>();
     32     test<wchar_t, std::round_toward_zero>();
     33 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
     34     test<char16_t, std::round_toward_zero>();
     35     test<char32_t, std::round_toward_zero>();
     36 #endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
     37     test<short, std::round_toward_zero>();
     38     test<unsigned short, std::round_toward_zero>();
     39     test<int, std::round_toward_zero>();
     40     test<unsigned int, std::round_toward_zero>();
     41     test<long, std::round_toward_zero>();
     42     test<unsigned long, std::round_toward_zero>();
     43     test<long long, std::round_toward_zero>();
     44     test<unsigned long long, std::round_toward_zero>();
     45 #ifndef _LIBCPP_HAS_NO_INT128
     46     test<__int128_t, std::round_toward_zero>();
     47     test<__uint128_t, std::round_toward_zero>();
     48 #endif
     49     test<float, std::round_to_nearest>();
     50     test<double, std::round_to_nearest>();
     51     test<long double, std::round_to_nearest>();
     52 }
     53