std::bit_and

< cpp‎ | utility‎ | functional

Defined in header `<functional>`
template< class T > struct bit_and;		(until C++14)
template< class T = void > struct bit_and;		(since C++14)

Function object for performing bitwise AND. Effectively calls operator& on type T.

Specializations

The standard library provides a specialization of std::bit_and when T is not specified, which leaves the parameter types and return type to be deduced.

bit_and<void>

(C++14)

function object implementing x & y deducing argument and return types
(class template specialization)

(since C++14)

Member types

Type	Definition
`result_type` (deprecated in C++17)(removed in C++20)	`T`
`first_argument_type` (deprecated in C++17)(removed in C++20)	`T`
`second_argument_type` (deprecated in C++17)(removed in C++20)	`T`

These member types are obtained via publicly inheriting std::binary_function<T, T, T>.

(until C++11)

Member functions

operator()

returns the result of bitwise AND of two arguments
(public member function)

std::bit_and::operator()

T operator()( const T& lhs, const T& rhs ) const;		(until C++14)
constexpr T operator()( const T& lhs, const T& rhs ) const;		(since C++14)

Returns the result of bitwise AND of lhs and rhs.

Parameters

lhs, rhs

values to compute bitwise AND of

Return value

The result of lhs & rhs.

Exceptions

May throw implementation-defined exceptions.

Possible implementation

constexpr T operator()(const T &lhs, const T &rhs) const 
{
    return lhs & rhs;
}