std::bit_or

From cppreference.com
< cpp‎ | utility‎ | functional
C++
Utilities library
General utilities
Relational operators (deprecated in C++20)
Integer comparison functions
(C++20)(C++20)(C++20)
(C++20)
Swap and type operations
(C++20)
(C++14)
(C++11)
(C++23)
(C++11)
(C++23)
(C++11)
(C++11)
(C++17)
Common vocabulary types
(C++11)
(C++17)
(C++17)
(C++17)
(C++11)
(C++11)
(C++17)
(C++17)
(C++23)



Function objects
Function invocation
(C++17)(C++23)
Identity function object
(C++20)
Transparent operator wrappers
(C++14)
(C++14)
(C++14)
(C++14)  
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)

Old binders and adaptors
(until C++17*)
(until C++17*)
(until C++17*)
(until C++17*)
(until C++17*)  
(until C++17*)
(until C++17*) (until C++17*) (until C++17*) (until C++17*)
(until C++20*)
(until C++20*)
(until C++17*)(until C++17*)
(until C++17*)(until C++17*)

(until C++17*)
(until C++17*) (until C++17*) (until C++17*) (until C++17*)
(until C++20*)
(until C++20*)
Defined in header <functional>
template< class T >
struct bit_or;
(until C++14)
template < class T = void >
struct bit_or;
(since C++14)

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.

(C++14)
 function object implementing x | y deducing parameter 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 OR of two arguments
(public member function)

std::bit_or::operator()

T operator( ) ( const T& lhs, const T& rhs ) const ;
(constexpr 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 missing added
Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/utility/functional/bit_or&oldid=173629