std::make_error_condition(std::future_errc)
From cppreference.com
                    
                                        
                    < cpp | thread | future errc
                    
                                                            
                    | Defined in header  <future> | ||
| std::error_condition make_error_condition( std::future_errc e ); | (since C++11) | |
Constructs an std::error_condition object from a value of type std::future_errc as if by:
std::error_condition(static_cast<int>(e), std::future_category()).
Parameters
| e | - | error code number | 
Return value
A value of type std::error_condition that holds the error code number from e associated with the error category "future".
Example
| This section is incomplete Reason: no example | 
See also
| (C++11) | holds a portable error code (class) | 
| (C++11) | identifies the future error codes (enum) |