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>
test_make_unsigned()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
main()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, std::conditional<sizeof(Enum) == sizeof(int), const unsigned int, const unsigned char>::type >();
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