NAME¶

std::bit_or - std::bit_or

Synopsis¶

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

Function object for performing bitwise OR. Effectively calls operator| on type T.

Specializations¶

The standard library provides a specialization of std::bit_or when T
is not specified, which leaves the parameter types and return type to
be deduced.
(since C++14)
bit_or<void> function object implementing x | y deducing parameter and
(C++14) return types
(class template specialization)

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 (until C++11)
std::binary_function<T, T, T>.

Member functions¶

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

std::bit_or::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 OR of lhs and rhs.

Parameters¶

lhs, rhs - values to compute bitwise OR 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;
}

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 added
missing