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-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // test numeric_limits
10
11 // is_signed
12
13 #include <limits>
14
15 #include "test_macros.h"
16
17 template <class T, bool expected>
18 void
test()19 test()
20 {
21 static_assert(std::numeric_limits<T>::is_signed == expected, "is_signed test 1");
22 static_assert(std::numeric_limits<const T>::is_signed == expected, "is_signed test 2");
23 static_assert(std::numeric_limits<volatile T>::is_signed == expected, "is_signed test 3");
24 static_assert(std::numeric_limits<const volatile T>::is_signed == expected, "is_signed test 4");
25 }
26
main(int,char **)27 int main(int, char**)
28 {
29 test<bool, false>();
30 test<char, char(-1) < char(0)>();
31 test<signed char, true>();
32 test<unsigned char, false>();
33 test<wchar_t, wchar_t(-1) < wchar_t(0)>();
34 #if TEST_STD_VER > 17 && defined(__cpp_char8_t)
35 test<char8_t, false>();
36 #endif
37 test<char16_t, false>();
38 test<char32_t, false>();
39 test<short, true>();
40 test<unsigned short, false>();
41 test<int, true>();
42 test<unsigned int, false>();
43 test<long, true>();
44 test<unsigned long, false>();
45 test<long long, true>();
46 test<unsigned long long, false>();
47 #ifndef TEST_HAS_NO_INT128
48 test<__int128_t, true>();
49 test<__uint128_t, false>();
50 #endif
51 test<float, true>();
52 test<double, true>();
53 test<long double, true>();
54
55 return 0;
56 }
57