std::experimental::source_location::function_name
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                    < cpp | experimental | source location
                    
                                                            
                    |   constexpr const char* function_name() const noexcept;  | 
(library fundamentals TS v2) | |
Returns the name of the function associated with the position represented by this object, if any.
Parameters
(none)
Return value
If this object represents a position in a body of a function, returns an implementation-defined null-terminated byte string corresponding to the name of the function.
Otherwise, an empty string is returned.
Example
| This section is incomplete Reason: no example  | 
See also
|    return the line number represented by this object   (public member function)  | |
|    return the column number represented by this object   (public member function)  | |
|    return the file name represented by this object   (public member function)  |