| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // type_traits |
| |
| // make_signed |
| |
| #include <type_traits> |
| |
| #include "test_macros.h" |
| |
| enum Enum {zero, one_}; |
| |
| #if TEST_STD_VER >= 11 |
| enum BigEnum : unsigned long long // MSVC's ABI doesn't follow the Standard |
| #else |
| enum BigEnum |
| #endif |
| { |
| bigzero, |
| big = 0xFFFFFFFFFFFFFFFFULL |
| }; |
| |
| #if !defined(_LIBCPP_HAS_NO_INT128) && !defined(_LIBCPP_HAS_NO_STRONG_ENUMS) |
| enum HugeEnum : __uint128_t |
| { |
| hugezero |
| }; |
| #endif |
| |
| template <class T, class U> |
| void test_make_signed() |
| { |
| static_assert((std::is_same<typename std::make_signed<T>::type, U>::value), ""); |
| #if TEST_STD_VER > 11 |
| static_assert((std::is_same<std::make_signed_t<T>, U>::value), ""); |
| #endif |
| } |
| |
| int main() |
| { |
| test_make_signed< signed char, signed char >(); |
| test_make_signed< unsigned char, signed char >(); |
| test_make_signed< char, signed char >(); |
| test_make_signed< short, signed short >(); |
| test_make_signed< unsigned short, signed short >(); |
| test_make_signed< int, signed int >(); |
| test_make_signed< unsigned int, signed int >(); |
| test_make_signed< long, signed long >(); |
| test_make_signed< unsigned long, long >(); |
| test_make_signed< long long, signed long long >(); |
| test_make_signed< unsigned long long, signed long long >(); |
| test_make_signed< wchar_t, std::conditional<sizeof(wchar_t) == 4, int, short>::type >(); |
| test_make_signed< const wchar_t, std::conditional<sizeof(wchar_t) == 4, const int, const short>::type >(); |
| test_make_signed< const Enum, std::conditional<sizeof(Enum) == sizeof(int), const int, const signed char>::type >(); |
| test_make_signed< BigEnum, std::conditional<sizeof(long) == 4, long long, long>::type >(); |
| #ifndef _LIBCPP_HAS_NO_INT128 |
| test_make_signed< __int128_t, __int128_t >(); |
| test_make_signed< __uint128_t, __int128_t >(); |
| # ifndef _LIBCPP_HAS_NO_STRONG_ENUMS |
| test_make_signed< HugeEnum, __int128_t >(); |
| # endif |
| #endif |
| } |