diff options
Diffstat (limited to 'libcxx/include/bit')
| -rw-r--r-- | libcxx/include/bit | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/libcxx/include/bit b/libcxx/include/bit index 6dc85b5d01fb..ae4605b19166 100644 --- a/libcxx/include/bit +++ b/libcxx/include/bit @@ -15,6 +15,7 @@ namespace std { + // [bit.pow.two], integral powers of 2 template <class T> constexpr bool ispow2(T x) noexcept; // C++20 template <class T> @@ -24,13 +25,13 @@ namespace std { template <class T> constexpr T log2p1(T x) noexcept; // C++20 - // 23.20.2, rotating + // [bit.rotate], rotating template<class T> constexpr T rotl(T x, unsigned int s) noexcept; // C++20 template<class T> constexpr T rotr(T x, unsigned int s) noexcept; // C++20 - // 23.20.3, counting + // [bit.count], counting template<class T> constexpr int countl_zero(T x) noexcept; // C++20 template<class T> @@ -42,7 +43,7 @@ namespace std { template<class T> constexpr int popcount(T x) noexcept; // C++20 - // 20.15.9, endian + // [bit.endian], endian enum class endian { little = see below, // C++20 big = see below, // C++20 @@ -350,7 +351,7 @@ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR bool __ispow2(_Tp __t) _NOEXCEPT { static_assert(__bitop_unsigned_integer<_Tp>::value, "__ispow2 requires unsigned"); - return __t != 0 && (((__t & (__t - 1)) == 0)); + return __t != 0 && (((__t & (__t - 1)) == 0)); } |