Function SCIPstartClock 

pub unsafe extern "C" fn SCIPstartClock(
    scip: *mut SCIP,
    clck: *mut SCIP_CLOCK,
) -> SCIP_RETCODE

starts the time measurement of a clock

@return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref SCIP_Retcode “SCIP_RETCODE” for a complete list of error codes.