std::bit_not

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

Function object for performing bitwise NOT. Effectively calls operator~ on type T.

Specializations

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

bit_not<void>

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

Member types

Type	Definition
`result_type`(deprecated in C++17)	`T`
`argument_type`(deprecated in C++17)	`T`

(until C++20)

Member functions

operator()

returns the result of bitwise NOT of its argument
(public member function)

std::bit_not::operator()

constexpr T operator()( const T& arg ) const;

Returns the result of bitwise NOT of arg.

Parameters

arg

value to compute bitwise NOT of

Return value

The result of ~arg.

Exceptions

(none).

Possible implementation

constexpr T operator()(const T& arg) const 
{
    return ~arg;
}

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