Sample decorator in c++11

I am trying to write a template that will take any function and log its time and after some struggle with template syntax i have come up with below solution:

template <typename Func, typename... Args>
auto timeMyFunction(Func f, Args... args)-> typename 

    std::enable_if<std::is_same<decltype(f(args...)),void>::value,void>::type
    {
        auto start = std::chrono::steady_clock::now();
        f(args...);
        auto end = std::chrono::steady_clock::now();
        std::chrono::duration<double> diff = end-start;
        std::cout << "Time to complete function " << diff.count()<<std::endl;
    }
    template <typename Func, typename... Args>
    auto timeMyFunction(Func f, Args... args)-> typename std::enable_if<!std::is_same<decltype(f(args...)),void>::value,decltype(f(args...))>::type
    {
        auto start = std::chrono::steady_clock::now();
        auto ret = f(args...);
        auto end = std::chrono::steady_clock::now();
        std::chrono::duration<double> diff = end-start;
        std::cout << "Time to complete function " << diff.count()<<std::endl;
        return ret;
    }

But what i feel is this solution is some kind of Jugaad (http://ift.tt/1pvVXw4) and need your help in finding better solution. So what i am looking for is template that will calculate processing time of passed function and if possible can it be done without overloading as in above code i need to overload because i can't declare something like void ret. Also is my usage of decltype correct here.

Please suggest how it can be modified so that i can time class member and static function also via this template.