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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// bool none() const; // constexpr since C++23
#include <bitset>
#include <cassert>
#include <cstddef>
#include "test_macros.h"
template <std::size_t N>
TEST_CONSTEXPR_CXX23 void test_none() {
std::bitset<N> v;
v.reset();
assert(v.none() == true);
v.set();
assert(v.none() == (N == 0));
if (v.size() > 1) {
v[N/2] = false;
assert(v.none() == false);
v.reset();
v[N/2] = true;
assert(v.none() == false);
}
}
TEST_CONSTEXPR_CXX23 bool test() {
test_none<0>();
test_none<1>();
test_none<31>();
test_none<32>();
test_none<33>();
test_none<63>();
test_none<64>();
test_none<65>();
test_none<1000>();
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER > 20
static_assert(test());
#endif
return 0;
}
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