std::pointer_to_unary_function

template< 
    class Arg, 
    class Result 
> class pointer_to_unary_function : public std::unary_function<Arg, Result>;

(until C++17)
(deprecated since C++11)

std::pointer_to_unary_function is a function object that acts as a wrapper around a unary function.

(constructor)	constructs a new `pointer_to_unary_function` object with the supplied function (public member function)
operator()	calls the stored function (public member function)

1	`explicit` `pointer_to_unary_function( Result (*f)(Arg) );`

Constructs a pointer_to_unary_function function object with the stored function f.

pointer to a function to store

1	`Result operator()( Arg x )` `const;`

Calls the stored function.

argument to pass to the function

The value returned by the called function.

pointer_to_binary_function (until C++17)	adaptor-compatible wrapper for a pointer to binary function (class template)
ptr_fun (until C++17)	creates an adaptor-compatible function object wrapper from a pointer to function (function template)