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// template <class T, size_t N>
12// bool operator==(const array<T,N>& x, const array<T,N>& y); // constexpr in C++20
13// template <class T, size_t N>
14// bool operator!=(const array<T,N>& x, const array<T,N>& y); // removed in C++20
15// template <class T, size_t N>
16// bool operator<(const array<T,N>& x, const array<T,N>& y); // removed in C++20
17// template <class T, size_t N>
18// bool operator>(const array<T,N>& x, const array<T,N>& y); // removed in C++20
19// template <class T, size_t N>
20// bool operator<=(const array<T,N>& x, const array<T,N>& y); // removed in C++20
21// template <class T, size_t N>
22// bool operator>=(const array<T,N>& x, const array<T,N>& y); // removed in C++20
23
24#include <array>
25#include <cassert>
26
27#include "test_macros.h"
28#include "test_comparisons.h"
29
30TEST_CONSTEXPR_CXX20 bool tests() {
31 // Arrays where the elements support all comparison operators
32 AssertComparisonsReturnBool<std::array<int, 3> >();
33 {
34 typedef std::array<int, 3> C;
35 const C c1 = {1, 2, 3};
36 const C c2 = {1, 2, 3};
37 const C c3 = {3, 2, 1};
38 const C c4 = {1, 2, 1};
39 assert(testComparisons(c1, c2, true, false));
40 assert(testComparisons(c1, c3, false, true));
41 assert(testComparisons(c1, c4, false, false));
42 }
43 // Empty array
44 {
45 typedef std::array<int, 0> C;
46 const C c1 = {};
47 const C c2 = {};
48 assert(testComparisons(c1, c2, true, false));
49 }
50 // Arrays where the elements support only less and equality comparisons
51 AssertComparisonsReturnBool<std::array<LessAndEqComp, 3> >();
52 {
53 typedef std::array<LessAndEqComp, 3> C;
54 const C c1 = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(3)};
55 const C c2 = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(3)};
56 const C c3 = {LessAndEqComp(3), LessAndEqComp(2), LessAndEqComp(1)};
57 const C c4 = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(1)};
58 assert(testComparisons(c1, c2, true, false));
59 assert(testComparisons(c1, c3, false, true));
60 assert(testComparisons(c1, c4, false, false));
61 }
62 // Empty array where the elements support only less and equality comparisons
63 {
64 typedef std::array<LessAndEqComp, 0> C;
65 const C c1 = {};
66 const C c2 = {};
67 assert(testComparisons(c1, c2, true, false));
68 }
69
70 return true;
71}
72
73int main(int, char**) {
74 tests();
75#if TEST_STD_VER >= 20
76 static_assert(tests());
77#endif
78 return 0;
79}
80

source code of libcxx/test/std/containers/sequences/array/compare.pass.cpp