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// bool any() const; // constexpr since C++23
10
11#include <bitset>
12#include <cassert>
13#include <cstddef>
14
15#include "test_macros.h"
16
17template <std::size_t N>
18TEST_CONSTEXPR_CXX23 void test_any() {
19 std::bitset<N> v;
20 v.reset();
21 assert(v.any() == false);
22 v.set();
23 assert(v.any() == (N != 0));
24 if (v.size() > 1) {
25 v[N/2] = false;
26 assert(v.any() == true);
27 v.reset();
28 v[N/2] = true;
29 assert(v.any() == true);
30 }
31}
32
33TEST_CONSTEXPR_CXX23 bool test() {
34 test_any<0>();
35 test_any<1>();
36 test_any<31>();
37 test_any<32>();
38 test_any<33>();
39 test_any<63>();
40 test_any<64>();
41 test_any<65>();
42 test_any<1000>();
43
44 return true;
45}
46
47int main(int, char**) {
48 test();
49#if TEST_STD_VER > 20
50 static_assert(test());
51#endif
52
53 return 0;
54}
55

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