66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// type_traits
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// make_unsigned
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#include <type_traits>
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enum Enum {zero, one_};
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enum BigEnum
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{
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bigzero,
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big = 0xFFFFFFFFFFFFFFFFULL
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};
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#if !defined(_LIBCPP_HAS_NO_INT128) && !defined(_LIBCPP_HAS_NO_STRONG_ENUMS)
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enum HugeEnum : __int128_t
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{
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hugezero
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};
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#endif
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template <class T, class U>
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void test_make_unsigned()
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{
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static_assert((std::is_same<typename std::make_unsigned<T>::type, U>::value), "");
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#if _LIBCPP_STD_VER > 11
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static_assert((std::is_same<std::make_unsigned_t<T>, U>::value), "");
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#endif
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}
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int main()
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{
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test_make_unsigned<signed char, unsigned char> ();
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test_make_unsigned<unsigned char, unsigned char> ();
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test_make_unsigned<char, unsigned char> ();
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test_make_unsigned<short, unsigned short> ();
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test_make_unsigned<unsigned short, unsigned short> ();
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test_make_unsigned<int, unsigned int> ();
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test_make_unsigned<unsigned int, unsigned int> ();
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test_make_unsigned<long, unsigned long> ();
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test_make_unsigned<unsigned long, unsigned long> ();
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test_make_unsigned<long long, unsigned long long> ();
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test_make_unsigned<unsigned long long, unsigned long long> ();
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test_make_unsigned<wchar_t, std::conditional<sizeof(wchar_t) == 4, unsigned int, unsigned short>::type> ();
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test_make_unsigned<const wchar_t, std::conditional<sizeof(wchar_t) == 4, const unsigned int, const unsigned short>::type> ();
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test_make_unsigned<const Enum, std::conditional<sizeof(Enum) == sizeof(int), const unsigned int, const unsigned char>::type >();
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test_make_unsigned<BigEnum,
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std::conditional<sizeof(long) == 4, unsigned long long, unsigned long>::type> ();
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#ifndef _LIBCPP_HAS_NO_INT128
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test_make_unsigned<__int128_t, __uint128_t>();
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test_make_unsigned<__uint128_t, __uint128_t>();
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# ifndef _LIBCPP_HAS_NO_STRONG_ENUMS
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test_make_unsigned<HugeEnum, __uint128_t>();
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# endif
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#endif
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}
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