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 // min() 13 14 #include <limits> 15 #include <climits> 16 #include <cwchar> 17 #include <cfloat> 18 #include <cassert> 19 20 #include "test_macros.h" 21 22 template <class T> 23 void 24 test(T expected) 25 { 26 assert(std::numeric_limits<T>::min() == expected); 27 assert(std::numeric_limits<T>::is_bounded || !std::numeric_limits<T>::is_signed); 28 assert(std::numeric_limits<const T>::min() == expected); 29 assert(std::numeric_limits<const T>::is_bounded || !std::numeric_limits<const T>::is_signed); 30 assert(std::numeric_limits<volatile T>::min() == expected); 31 assert(std::numeric_limits<volatile T>::is_bounded || !std::numeric_limits<volatile T>::is_signed); 32 assert(std::numeric_limits<const volatile T>::min() == expected); 33 assert(std::numeric_limits<const volatile T>::is_bounded || !std::numeric_limits<const volatile T>::is_signed); 34 } 35 36 int main() 37 { 38 test<bool>(false); 39 test<char>(CHAR_MIN); 40 test<signed char>(SCHAR_MIN); 41 test<unsigned char>(0); 42 test<wchar_t>(WCHAR_MIN); 43 #if TEST_STD_VER > 17 && defined(__cpp_char8_t) 44 test<char8_t>(0); 45 #endif 46 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 47 test<char16_t>(0); 48 test<char32_t>(0); 49 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS 50 test<short>(SHRT_MIN); 51 test<unsigned short>(0); 52 test<int>(INT_MIN); 53 test<unsigned int>(0); 54 test<long>(LONG_MIN); 55 test<unsigned long>(0); 56 test<long long>(LLONG_MIN); 57 test<unsigned long long>(0); 58 #ifndef _LIBCPP_HAS_NO_INT128 59 test<__int128_t>(-__int128_t(__uint128_t(-1)/2) - 1); 60 test<__uint128_t>(0); 61 #endif 62 test<float>(FLT_MIN); 63 test<double>(DBL_MIN); 64 test<long double>(LDBL_MIN); 65 } 66
