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 // digits10 13 14 #include <limits> 15 #include <cfloat> 16 17 template <class T, int expected> 18 void 19 test() 20 { 21 static_assert(std::numeric_limits<T>::digits10 == expected, "digits10 test 1"); 22 static_assert(std::numeric_limits<T>::is_bounded, "digits10 test 5"); 23 static_assert(std::numeric_limits<const T>::digits10 == expected, "digits10 test 2"); 24 static_assert(std::numeric_limits<const T>::is_bounded, "digits10 test 6"); 25 static_assert(std::numeric_limits<volatile T>::digits10 == expected, "digits10 test 3"); 26 static_assert(std::numeric_limits<volatile T>::is_bounded, "digits10 test 7"); 27 static_assert(std::numeric_limits<const volatile T>::digits10 == expected, "digits10 test 4"); 28 static_assert(std::numeric_limits<const volatile T>::is_bounded, "digits10 test 8"); 29 } 30 31 int main() 32 { 33 test<bool, 0>(); 34 test<char, 2>(); 35 test<signed char, 2>(); 36 test<unsigned char, 2>(); 37 test<wchar_t, 5*sizeof(wchar_t)/2-1>(); // 4 -> 9 and 2 -> 4 38 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 39 test<char16_t, 4>(); 40 test<char32_t, 9>(); 41 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS 42 test<short, 4>(); 43 test<unsigned short, 4>(); 44 test<int, 9>(); 45 test<unsigned int, 9>(); 46 test<long, sizeof(long) == 4 ? 9 : 18>(); 47 test<unsigned long, sizeof(long) == 4 ? 9 : 19>(); 48 test<long long, 18>(); 49 test<unsigned long long, 19>(); 50 #ifndef _LIBCPP_HAS_NO_INT128 51 test<__int128_t, 38>(); 52 test<__uint128_t, 38>(); 53 #endif 54 test<float, FLT_DIG>(); 55 test<double, DBL_DIG>(); 56 test<long double, LDBL_DIG>(); 57 } 58
