54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// test constexpr bool operator[](size_t pos) const;
|
|
|
|
#include <bitset>
|
|
#include <type_traits>
|
|
#include <cstdlib>
|
|
#include <cassert>
|
|
|
|
#if defined(__clang__)
|
|
#pragma clang diagnostic ignored "-Wtautological-compare"
|
|
#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()
|
|
{
|
|
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));
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
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>();
|
|
}
|