20 General utilities library [utilities]

20.14 Function objects [function.objects]

20.14.8 Bitwise operations [bitwise.operations]

20.14.8.1 class template bit_and [bitwise.operations.and]

template <class T = void> struct bit_and { constexpr T operator()(const T& x, const T& y) const; };

constexpr T operator()(const T& x, const T& y) const;

1

Returns: x & y.

template <> struct bit_and<void> { template <class T, class U> constexpr auto operator()(T&& t, U&& u) const -> decltype(std::forward<T>(t) & std::forward<U>(u)); using is_transparent = unspecified; };

template <class T, class U> constexpr auto operator()(T&& t, U&& u) const -> decltype(std::forward<T>(t) & std::forward<U>(u));

2

Returns: std::forward<T>(t) & std::forward<U>(u).