xref: /llvm-project/libcxx/test/std/utilities/template.bitset/bitset.members/flip_all.pass.cpp (revision f02120fba28f2352fd9396683892fc6671caa137)
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 // bitset<N>& flip(); // constexpr since C++23
10 
11 #include <bitset>
12 #include <cassert>
13 #include <cstddef>
14 #include <vector>
15 
16 #include "../bitset_test_cases.h"
17 #include "test_macros.h"
18 
19 template <std::size_t N>
test_flip_all()20 TEST_CONSTEXPR_CXX23 void test_flip_all() {
21     std::vector<std::bitset<N> > const cases = get_test_cases<N>();
22     for (std::size_t c = 0; c != cases.size(); ++c) {
23         std::bitset<N> v1 = cases[c];
24         std::bitset<N> v2 = v1;
25         v2.flip();
26         for (std::size_t i = 0; i < v1.size(); ++i)
27             assert(v2[i] == ~v1[i]);
28     }
29 }
30 
test()31 TEST_CONSTEXPR_CXX23 bool test() {
32   test_flip_all<0>();
33   test_flip_all<1>();
34   test_flip_all<31>();
35   test_flip_all<32>();
36   test_flip_all<33>();
37   test_flip_all<63>();
38   test_flip_all<64>();
39   test_flip_all<65>();
40 
41   return true;
42 }
43 
main(int,char **)44 int main(int, char**) {
45   test();
46   test_flip_all<1000>(); // not in constexpr because of constexpr evaluation step limits
47 #if TEST_STD_VER > 20
48   static_assert(test());
49 #endif
50 
51   return 0;
52 }
53