std::negate
From cppreference.com
< cpp | utility | functional
Defined in header
<functional>
|
||
template< class T >
struct negate; |
(until C++14) | |
template< class T = void >
struct negate; |
(since C++14) | |
Function object for performing negation. Effectively calls operator- on an instance of type T
.
Contents |
[edit] Specializations
The standard library provides a specialization of
|
(since C++14) |
[edit] Member types
Type | Definition |
result_type
|
T
|
argument_type
|
T
|
[edit] Member functions
operator() |
returns the negation of the argument (public member function) |
std::negate::operator()
T operator()( const T& arg ) const;
|
(until C++14) | |
constexpr T operator()( const T& arg ) const;
|
(since C++14) | |
Returns the negation of arg
.
Parameters
arg | - | value to compute negation of |
Return value
The result of -arg.
Exceptions
(none)
Possible implementation
constexpr T operator()(const T &arg) const { return -arg; } |