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
16enum Enum {zero, one_};
17
18enum BigEnum
19{
20    bigzero,
21    big = 0xFFFFFFFFFFFFFFFFULL
22};
23
24#if !defined(_LIBCPP_HAS_NO_INT128) && !defined(_LIBCPP_HAS_NO_STRONG_ENUMS)
25enum HugeEnum : __int128_t
26{
27    hugezero
28};
29#endif
30
31template <class T, class U>
32void 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
40int 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