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 // <array>
11 
12 //  These are all constexpr in C++20
13 // bool operator==(array<T, N> const&, array<T, N> const&);
14 // bool operator!=(array<T, N> const&, array<T, N> const&);
15 // bool operator<(array<T, N> const&, array<T, N> const&);
16 // bool operator<=(array<T, N> const&, array<T, N> const&);
17 // bool operator>(array<T, N> const&, array<T, N> const&);
18 // bool operator>=(array<T, N> const&, array<T, N> const&);
19 
20 
21 #include <array>
22 #include <vector>
23 #include <cassert>
24 
25 #include "test_macros.h"
26 #include "test_comparisons.h"
27 
28 // std::array is explicitly allowed to be initialized with A a = { init-list };.
29 // Disable the missing braces warning for this reason.
30 #include "disable_missing_braces_warning.h"
31 
32 int main()
33 {
34   {
35     typedef int T;
36     typedef std::array<T, 3> C;
37     C c1 = {1, 2, 3};
38     C c2 = {1, 2, 3};
39     C c3 = {3, 2, 1};
40     C c4 = {1, 2, 1};
41     assert(testComparisons6(c1, c2, true, false));
42     assert(testComparisons6(c1, c3, false, true));
43     assert(testComparisons6(c1, c4, false, false));
44   }
45   {
46     typedef int T;
47     typedef std::array<T, 0> C;
48     C c1 = {};
49     C c2 = {};
50     assert(testComparisons6(c1, c2, true, false));
51   }
52 
53 #if TEST_STD_VER > 17
54   {
55   constexpr std::array<int, 3> a1 = {1, 2, 3};
56   constexpr std::array<int, 3> a2 = {2, 3, 4};
57   static_assert(testComparisons6(a1, a1, true, false), "");
58   static_assert(testComparisons6(a1, a2, false, true), "");
59   static_assert(testComparisons6(a2, a1, false, false), "");
60   }
61 #endif
62 }
63