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:
10
11// bool operator==(const bitset<N>& rhs) const; // constexpr since C++23
12// bool operator!=(const bitset<N>& rhs) const; // constexpr since C++23
13
14#include <bitset>
15#include <cassert>
16#include <cstddef>
17#include <vector>
18
19#include "../bitset_test_cases.h"
20#include "test_macros.h"
21
22template <std::size_t N>
23TEST_CONSTEXPR_CXX23 void test_equality() {
24 std::vector<std::bitset<N> > const cases = get_test_cases<N>();
25 for (std::size_t c = 0; c != cases.size(); ++c) {
26 std::bitset<N> const v1 = cases[c];
27 std::bitset<N> v2 = v1;
28 assert(v1 == v2);
29 if (v1.size() > 0) {
30 v2[N/2].flip();
31 assert(v1 != v2);
32 }
33 }
34}
35
36TEST_CONSTEXPR_CXX23 bool test() {
37 test_equality<0>();
38 test_equality<1>();
39 test_equality<31>();
40 test_equality<32>();
41 test_equality<33>();
42 test_equality<63>();
43 test_equality<64>();
44 test_equality<65>();
45
46 return true;
47}
48
49int main(int, char**) {
50 test();
51 test_equality<1000>(); // not in constexpr because of constexpr evaluation step limits
52#if TEST_STD_VER > 20
53 static_assert(test());
54#endif
55
56 return 0;
57}
58

source code of libcxx/test/std/utilities/template.bitset/bitset.members/op_eq_eq.pass.cpp