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 // <array>
10 
11 //  These are all constexpr in C++20
12 // bool operator==(array<T, N> const&, array<T, N> const&);
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 
19 
20 #include <array>
21 #include <vector>
22 #include <cassert>
23 
24 #include "test_macros.h"
25 #include "test_comparisons.h"
26 
27 // std::array is explicitly allowed to be initialized with A a = { init-list };.
28 // Disable the missing braces warning for this reason.
29 #include "disable_missing_braces_warning.h"
30 
31 int main(int, char**)
32 {
33   {
34     typedef int T;
35     typedef std::array<T, 3> C;
36     C c1 = {1, 2, 3};
37     C c2 = {1, 2, 3};
38     C c3 = {3, 2, 1};
39     C c4 = {1, 2, 1};
40     assert(testComparisons6(c1, c2, true, false));
41     assert(testComparisons6(c1, c3, false, true));
42     assert(testComparisons6(c1, c4, false, false));
43   }
44   {
45     typedef int T;
46     typedef std::array<T, 0> C;
47     C c1 = {};
48     C c2 = {};
49     assert(testComparisons6(c1, c2, true, false));
50   }
51 
52 #if TEST_STD_VER > 17
53   {
54   constexpr std::array<int, 3> a1 = {1, 2, 3};
55   constexpr std::array<int, 3> a2 = {2, 3, 4};
56   static_assert(testComparisons6(a1, a1, true, false), "");
57   static_assert(testComparisons6(a1, a2, false, true), "");
58   static_assert(testComparisons6(a2, a1, false, false), "");
59   }
60 #endif
61 
62   return 0;
63 }
64