72 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// type_traits10 11// make_signed12 13#include <type_traits>14 15#include "test_macros.h"16 17enum Enum {zero, one_};18 19#if TEST_STD_VER >= 1120enum BigEnum : unsigned long long // MSVC's ABI doesn't follow the Standard21#else22enum BigEnum23#endif24{25 bigzero,26 big = 0xFFFFFFFFFFFFFFFFULL27};28 29#if !defined(TEST_HAS_NO_INT128) && TEST_STD_VER >= 1130enum HugeEnum : __uint128_t31{32 hugezero33};34#endif35 36template <class T, class U>37void test_make_signed()38{39 ASSERT_SAME_TYPE(U, typename std::make_signed<T>::type);40#if TEST_STD_VER > 1141 ASSERT_SAME_TYPE(U, std::make_signed_t<T>);42#endif43}44 45int main(int, char**)46{47 test_make_signed< signed char, signed char >();48 test_make_signed< unsigned char, signed char >();49 test_make_signed< char, signed char >();50 test_make_signed< short, signed short >();51 test_make_signed< unsigned short, signed short >();52 test_make_signed< int, signed int >();53 test_make_signed< unsigned int, signed int >();54 test_make_signed< long, signed long >();55 test_make_signed< unsigned long, long >();56 test_make_signed< long long, signed long long >();57 test_make_signed< unsigned long long, signed long long >();58 test_make_signed< wchar_t, std::conditional<sizeof(wchar_t) == 4, int, short>::type >();59 test_make_signed< const wchar_t, std::conditional<sizeof(wchar_t) == 4, const int, const short>::type >();60 test_make_signed< const Enum, std::conditional<sizeof(Enum) == sizeof(int), const int, const signed char>::type >();61 test_make_signed< BigEnum, std::conditional<sizeof(long) == 4, long long, long>::type >();62#ifndef TEST_HAS_NO_INT12863 test_make_signed< __int128_t, __int128_t >();64 test_make_signed< __uint128_t, __int128_t >();65# if TEST_STD_VER >= 1166 test_make_signed< HugeEnum, __int128_t >();67# endif68#endif69 70 return 0;71}72