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 test(size_t pos) const; // 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
19template <std::size_t N>
20TEST_CONSTEXPR_CXX23 void test_test() {
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> const v = cases[c];
24 if (v.size() > 0) {
25 std::size_t middle = v.size() / 2;
26 bool b = v.test(middle);
27 assert(b == v[middle]);
28 }
29 }
30}
31
32TEST_CONSTEXPR_CXX23 bool test() {
33 test_test<0>();
34 test_test<1>();
35 test_test<31>();
36 test_test<32>();
37 test_test<33>();
38 test_test<63>();
39 test_test<64>();
40 test_test<65>();
41
42 return true;
43}
44
45int main(int, char**) {
46 test();
47 test_test<1000>(); // not in constexpr because of constexpr evaluation step limits
48#if TEST_STD_VER > 20
49 static_assert(test());
50#endif
51
52 return 0;
53}
54

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