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 // type_traits 11 12 // make_unsigned 13 14 #include <type_traits> 15 16 enum Enum {zero, one_}; 17 18 enum BigEnum 19 { 20 bigzero, 21 big = 0xFFFFFFFFFFFFFFFFULL 22 }; 23 24 #if !defined(_LIBCPP_HAS_NO_INT128) && !defined(_LIBCPP_HAS_NO_STRONG_ENUMS) 25 enum HugeEnum : __int128_t 26 { 27 hugezero 28 }; 29 #endif 30 31 template <class T, class U> 32 void test_make_unsigned() 33 { 34 static_assert((std::is_same<typename std::make_unsigned<T>::type, U>::value), ""); 35 #if _LIBCPP_STD_VER > 11 36 static_assert((std::is_same<std::make_unsigned_t<T>, U>::value), ""); 37 #endif 38 } 39 40 int main() 41 { 42 test_make_unsigned<signed char, unsigned char> (); 43 test_make_unsigned<unsigned char, unsigned char> (); 44 test_make_unsigned<char, unsigned char> (); 45 test_make_unsigned<short, unsigned short> (); 46 test_make_unsigned<unsigned short, unsigned short> (); 47 test_make_unsigned<int, unsigned int> (); 48 test_make_unsigned<unsigned int, unsigned int> (); 49 test_make_unsigned<long, unsigned long> (); 50 test_make_unsigned<unsigned long, unsigned long> (); 51 test_make_unsigned<long long, unsigned long long> (); 52 test_make_unsigned<unsigned long long, unsigned long long> (); 53 test_make_unsigned<wchar_t, std::conditional<sizeof(wchar_t) == 4, unsigned int, unsigned short>::type> (); 54 test_make_unsigned<const wchar_t, std::conditional<sizeof(wchar_t) == 4, const unsigned int, const unsigned short>::type> (); 55 test_make_unsigned<const Enum, const unsigned int> (); 56 test_make_unsigned<BigEnum, 57 std::conditional<sizeof(long) == 4, unsigned long long, unsigned long>::type> (); 58 #ifndef _LIBCPP_HAS_NO_INT128 59 test_make_unsigned<__int128_t, __uint128_t>(); 60 test_make_unsigned<__uint128_t, __uint128_t>(); 61 # ifndef _LIBCPP_HAS_NO_STRONG_ENUMS 62 test_make_unsigned<HugeEnum, __uint128_t>(); 63 # endif 64 #endif 65 } 66
