diff options
Diffstat (limited to 'libcxx/test/utilities/template.bitset/bitset.members/to_ullong.pass.cpp')
| -rw-r--r-- | libcxx/test/utilities/template.bitset/bitset.members/to_ullong.pass.cpp | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/libcxx/test/utilities/template.bitset/bitset.members/to_ullong.pass.cpp b/libcxx/test/utilities/template.bitset/bitset.members/to_ullong.pass.cpp index 0fbf212e82e..4b9b5cbda1f 100644 --- a/libcxx/test/utilities/template.bitset/bitset.members/to_ullong.pass.cpp +++ b/libcxx/test/utilities/template.bitset/bitset.members/to_ullong.pass.cpp @@ -1 +1,50 @@ -//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// test unsigned long long to_ullong() const;
#include <bitset>
#include <algorithm>
#include <climits>
#include <cassert>
template <std::size_t N>
void test_to_ullong()
{
const std::size_t M = sizeof(unsigned long long) * CHAR_BIT < N ? sizeof(unsigned long long) * CHAR_BIT : N;
const std::size_t X = M == 0 ? sizeof(unsigned long long) * CHAR_BIT - 1 : sizeof(unsigned long long) * CHAR_BIT - M;
const unsigned long long max = M == 0 ? 0 : (unsigned long long)(-1) >> X;
unsigned long long tests[] = {0,
std::min<unsigned long long>(1, max),
std::min<unsigned long long>(2, max),
std::min<unsigned long long>(3, max),
std::min(max, max-3),
std::min(max, max-2),
std::min(max, max-1),
max};
for (std::size_t i = 0; i < sizeof(tests)/sizeof(tests[0]); ++i)
{
unsigned long long j = tests[i];
std::bitset<N> v(j);
assert(j == v.to_ullong());
}
}
int main()
{
test_to_ullong<0>();
test_to_ullong<1>();
test_to_ullong<31>();
test_to_ullong<32>();
test_to_ullong<33>();
test_to_ullong<63>();
test_to_ullong<64>();
test_to_ullong<65>();
test_to_ullong<1000>();
}
\ No newline at end of file +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// test unsigned long long to_ullong() const; + +#include <bitset> +#include <algorithm> +#include <climits> +#include <cassert> + +template <std::size_t N> +void test_to_ullong() +{ + const std::size_t M = sizeof(unsigned long long) * CHAR_BIT < N ? sizeof(unsigned long long) * CHAR_BIT : N; + const std::size_t X = M == 0 ? sizeof(unsigned long long) * CHAR_BIT - 1 : sizeof(unsigned long long) * CHAR_BIT - M; + const unsigned long long max = M == 0 ? 0 : (unsigned long long)(-1) >> X; + unsigned long long tests[] = {0, + std::min<unsigned long long>(1, max), + std::min<unsigned long long>(2, max), + std::min<unsigned long long>(3, max), + std::min(max, max-3), + std::min(max, max-2), + std::min(max, max-1), + max}; + for (std::size_t i = 0; i < sizeof(tests)/sizeof(tests[0]); ++i) + { + unsigned long long j = tests[i]; + std::bitset<N> v(j); + assert(j == v.to_ullong()); + } +} + +int main() +{ + test_to_ullong<0>(); + test_to_ullong<1>(); + test_to_ullong<31>(); + test_to_ullong<32>(); + test_to_ullong<33>(); + test_to_ullong<63>(); + test_to_ullong<64>(); + test_to_ullong<65>(); + test_to_ullong<1000>(); +} |
