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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
//
//===----------------------------------------------------------------------===//
// test bitset<N>::reference operator[](size_t pos);
#include <bitset>
#include <type_traits>
#include <cstdlib>
#include <cassert>
#include "test_macros.h"
#if defined(TEST_COMPILER_CLANG)
#pragma clang diagnostic ignored "-Wtautological-compare"
#elif defined(TEST_COMPILER_C1XX)
#pragma warning(disable: 6294) // Ill-defined for-loop: initial condition does not satisfy test. Loop body not executed.
#endif
template <std::size_t N>
std::bitset<N>
make_bitset()
{
std::bitset<N> v;
for (std::size_t i = 0; i < N; ++i)
v[i] = static_cast<bool>(std::rand() & 1);
return v;
}
template <std::size_t N>
void test_index_const()
{
std::bitset<N> v1 = make_bitset<N>();
const bool greater_than_0 = std::integral_constant<bool, (N > 0)>::value; // avoid compiler warnings
if (greater_than_0)
{
assert(v1[N/2] == v1.test(N/2));
typename std::bitset<N>::reference r = v1[N/2];
assert(r == v1.test(N/2));
typename std::bitset<N>::reference r2 = v1[N/2];
r = r2;
assert(r == v1.test(N/2));
r = false;
assert(r == false);
assert(v1.test(N/2) == false);
r = true;
assert(r == true);
assert(v1.test(N/2) == true);
bool b = ~r;
assert(r == true);
assert(v1.test(N/2) == true);
assert(b == false);
r.flip();
assert(r == false);
assert(v1.test(N/2) == false);
}
}
int main(int, char**)
{
test_index_const<0>();
test_index_const<1>();
test_index_const<31>();
test_index_const<32>();
test_index_const<33>();
test_index_const<63>();
test_index_const<64>();
test_index_const<65>();
test_index_const<1000>();
return 0;
}
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