| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // test numeric_limits |
| |
| // digits |
| |
| #include <limits> |
| #include <cfloat> |
| |
| #include "test_macros.h" |
| |
| template <class T, int expected> |
| void |
| test() |
| { |
| static_assert(std::numeric_limits<T>::digits == expected, "digits test 1"); |
| static_assert(std::numeric_limits<const T>::digits == expected, "digits test 2"); |
| static_assert(std::numeric_limits<volatile T>::digits == expected, "digits test 3"); |
| static_assert(std::numeric_limits<const volatile T>::digits == expected, "digits test 4"); |
| } |
| |
| int main(int, char**) |
| { |
| test<bool, 1>(); |
| test<char, std::numeric_limits<char>::is_signed ? 7 : 8>(); |
| test<signed char, 7>(); |
| test<unsigned char, 8>(); |
| test<wchar_t, std::numeric_limits<wchar_t>::is_signed ? sizeof(wchar_t)*8-1 : sizeof(wchar_t)*8>(); |
| #if TEST_STD_VER > 17 && defined(__cpp_char8_t) |
| test<char8_t, 8>(); |
| #endif |
| #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS |
| test<char16_t, 16>(); |
| test<char32_t, 32>(); |
| #endif // _LIBCPP_HAS_NO_UNICODE_CHARS |
| test<short, 15>(); |
| test<unsigned short, 16>(); |
| test<int, 31>(); |
| test<unsigned int, 32>(); |
| test<long, sizeof(long) == 4 ? 31 : 63>(); |
| test<unsigned long, sizeof(long) == 4 ? 32 : 64>(); |
| test<long long, 63>(); |
| test<unsigned long long, 64>(); |
| #ifndef _LIBCPP_HAS_NO_INT128 |
| test<__int128_t, 127>(); |
| test<__uint128_t, 128>(); |
| #endif |
| test<float, FLT_MANT_DIG>(); |
| test<double, DBL_MANT_DIG>(); |
| test<long double, LDBL_MANT_DIG>(); |
| |
| return 0; |
| } |