thread_detach
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | Defined in header  <threads.h> | ||
| int thrd_detach( thrd_t thr ); | (since C11) | |
Detaches the thread identified by thr from the current environment. The resources held by the thread will be freed automatically once the thread exits.
[edit] Parameters
| thr | - | identifier of the thread to detach | 
[edit] Return value
thrd_success if successful, thrd_error otherwise.
[edit] See also
| (C11) | blocks until a thread terminates (function) |