std::bit_and - cppreference.com (original) (raw)
| Defined in header | | | | -------------------------------------------------------------------------------------- | | ------------- | | 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.
Contents
[edit] 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. function object implementing x & y deducing parameter and return types (class template specialization) [edit] | (since C++14) |
|---|
[edit] 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) |
|---|
[edit] Member functions
| | 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; | | (constexpr 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.
[edit] Exceptions
May throw implementation-defined exceptions.
Possible implementation
constexpr T operator()(const T& lhs, const T& rhs) const { return lhs & rhs; }
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 660 | C++98 | function objects for bitwise operations are missing | added |