# std::pointer_to_unary_function

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< cpp‎ | utility‎ | functional

template< class Arg, class Result > class pointer_to_unary_function : public std::unary_function<Arg, Result>; |  | (deprecated in C++11) (removed in C++17)

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

### Member functions

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

## std::pointer_to_unary_function::pointer_to_unary_function

explicit pointer_to_unary_function( Result (*f)(Arg) ); |  |

Constructs a `pointer_to_unary_function` function object with the stored function `f`.

### Parameters

f | - | pointer to a function to store

## std::pointer_to_unary_function::operator()

Result operator()( Arg x ) const; |  |

Calls the stored function.

### Parameters

x | - | argument to pass to the function

### Return value

The value returned by the called function.

### See also

pointer_to_binary_function (deprecated in C++11)(removed in C++17) | adaptor-compatible wrapper for a pointer to binary function (class template)
ptr_fun (deprecated in C++11)(removed in C++17) | creates an adaptor-compatible function object wrapper from a pointer to function (function template)

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