SECOND — CPU time function ¶Returns a REAL(4) value representing the elapsed CPU time in
seconds.  This provides the same functionality as the standard
CPU_TIME intrinsic, and is only included for backwards
compatibility.
This intrinsic is provided in both subroutine and function forms; however, only one form can be used in any given program unit.
GNU extension
Subroutine, function
| CALL SECOND(TIME) | 
| TIME = SECOND() | 
| TIME | Shall be of type REAL(4). | 
In either syntax, TIME is set to the process’s current runtime in seconds.