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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>& flip(size_t pos);
#include <bitset>
#include <cstdlib>
#include <cassert>
#include <stdexcept>
#include "test_macros.h"
#if 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_flip_one(bool test_throws)
{
std::bitset<N> v = make_bitset<N>();
#ifdef TEST_HAS_NO_EXCEPTIONS
if (test_throws) return;
#else
try
{
#endif
v.flip(50);
bool b = v[50];
if (50 >= v.size())
assert(false);
assert(v[50] == b);
v.flip(50);
assert(v[50] != b);
v.flip(50);
assert(v[50] == b);
assert(!test_throws);
#ifndef TEST_HAS_NO_EXCEPTIONS
}
catch (std::out_of_range&)
{
assert(test_throws);
}
#endif
}
int main()
{
test_flip_one<0>(true);
test_flip_one<1>(true);
test_flip_one<31>(true);
test_flip_one<32>(true);
test_flip_one<33>(true);
test_flip_one<63>(false);
test_flip_one<64>(false);
test_flip_one<65>(false);
test_flip_one<1000>(false);
}
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