| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| |
| // digits10 |
| |
| #include <limits> |
| #include <cfloat> |
| |
| #include "test_macros.h" |
| |
| template <class T, int expected> |
| void |
| test() |
| { |
| static_assert(std::numeric_limits<T>::digits10 == expected, "digits10 test 1"); |
| static_assert(std::numeric_limits<T>::is_bounded, "digits10 test 5"); |
| static_assert(std::numeric_limits<const T>::digits10 == expected, "digits10 test 2"); |
| static_assert(std::numeric_limits<const T>::is_bounded, "digits10 test 6"); |
| static_assert(std::numeric_limits<volatile T>::digits10 == expected, "digits10 test 3"); |
| static_assert(std::numeric_limits<volatile T>::is_bounded, "digits10 test 7"); |
| static_assert(std::numeric_limits<const volatile T>::digits10 == expected, "digits10 test 4"); |
| static_assert(std::numeric_limits<const volatile T>::is_bounded, "digits10 test 8"); |
| } |
| |
| int main(int, char**) |
| { |
| test<bool, 0>(); |
| test<char, 2>(); |
| test<signed char, 2>(); |
| test<unsigned char, 2>(); |
| test<wchar_t, 5*sizeof(wchar_t)/2-1>(); // 4 -> 9 and 2 -> 4 |
| #if TEST_STD_VER > 17 && defined(__cpp_char8_t) |
| test<char8_t, 2>(); |
| #endif |
| test<char16_t, 4>(); |
| test<char32_t, 9>(); |
| test<short, 4>(); |
| test<unsigned short, 4>(); |
| test<int, 9>(); |
| test<unsigned int, 9>(); |
| test<long, sizeof(long) == 4 ? 9 : 18>(); |
| test<unsigned long, sizeof(long) == 4 ? 9 : 19>(); |
| test<long long, 18>(); |
| test<unsigned long long, 19>(); |
| #ifndef TEST_HAS_NO_INT128 |
| test<__int128_t, 38>(); |
| test<__uint128_t, 38>(); |
| #endif |
| test<float, FLT_DIG>(); |
| test<double, DBL_DIG>(); |
| test<long double, LDBL_DIG>(); |
| |
| return 0; |
| } |