make_unsigned.pass.cpp revision aa87532fee72a30669efb5a673343b390284502d 
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
24template <class T, class U>
25void test_make_unsigned()
26{
27    static_assert((std::is_same<typename std::make_unsigned<T>::type, U>::value), "");
28#if _LIBCPP_STD_VER > 11
29    static_assert((std::is_same<std::make_unsigned_t<T>, U>::value), "");
30#endif
31}
32
33int main()
34{
35    test_make_unsigned<signed char, unsigned char> ();
36    test_make_unsigned<unsigned char, unsigned char> ();
37    test_make_unsigned<char, unsigned char> ();
38    test_make_unsigned<short, unsigned short> ();
39    test_make_unsigned<unsigned short, unsigned short> ();
40    test_make_unsigned<int, unsigned int> ();
41    test_make_unsigned<unsigned int, unsigned int> ();
42    test_make_unsigned<long, unsigned long> ();
43    test_make_unsigned<unsigned long, unsigned long> ();
44    test_make_unsigned<long long, unsigned long long> ();
45    test_make_unsigned<unsigned long long, unsigned long long> ();
46    test_make_unsigned<wchar_t, std::conditional<sizeof(wchar_t) == 4, unsigned int, unsigned short>::type> ();
47    test_make_unsigned<const wchar_t, std::conditional<sizeof(wchar_t) == 4, const unsigned int, const unsigned short>::type> ();
48    test_make_unsigned<const Enum, const unsigned int> ();
49    test_make_unsigned<BigEnum,
50                   std::conditional<sizeof(long) == 4, unsigned long long, unsigned long>::type> ();
51}
52