Implements portable functions for bit twiddling operations including counting leading and trailing zero bits as well as population count. More...
#include "pstore/support/uint128.hpp"
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Functions | |
| constexpr unsigned | pstore::bit_count::pop_count (unsigned char const x) noexcept |
| constexpr unsigned | pstore::bit_count::pop_count (unsigned short const x) noexcept |
| constexpr unsigned | pstore::bit_count::pop_count (unsigned const x) noexcept |
| constexpr unsigned | pstore::bit_count::pop_count (unsigned long const x) noexcept |
| constexpr unsigned | pstore::bit_count::pop_count (unsigned long long const x) noexcept |
| constexpr unsigned | pstore::bit_count::pop_count (uint128 const x) noexcept |
| constexpr unsigned | pstore::bit_count::clz (unsigned const x) noexcept |
| constexpr unsigned | pstore::bit_count::clz (unsigned long const x) noexcept |
| constexpr unsigned | pstore::bit_count::clz (unsigned long long const x) noexcept |
| constexpr unsigned | pstore::bit_count::clz (std::uint8_t const x) noexcept |
| constexpr unsigned | pstore::bit_count::clz (std::uint16_t const x) noexcept |
| constexpr unsigned | pstore::bit_count::clz (uint128 const x) noexcept |
| constexpr unsigned | pstore::bit_count::ctz (unsigned long long const x) noexcept |
| constexpr unsigned | pstore::bit_count::ctz (uint128 const x) noexcept |
Detailed Description
Implements portable functions for bit twiddling operations including counting leading and trailing zero bits as well as population count.
Function Documentation
◆ clz()
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noexcept |
Count the number of contiguous zero bits starting from the MSB. It is undefined behavior if x is 0.
◆ ctz()
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noexcept |
Count the number of contiguous zero bits starting from the LSB. It is undefined behavior if x is 0.
