The dtime_ function sets the time accounting information for the user time and system time in DTIME_STRUCT. The resolution for all timing is 1/100 of a second. The output appears in units of seconds.
Function
TYPE TB_TYPE SEQUENCE REAL(4) USRTIME REAL(4) SYSTIME END TYPE TYPE (TB_TYPE) DTIME_STRUCT
REAL(4)
The returned value is the sum of the user time and the system time since the last call to dtime_.