- clock :: IO CClock
- difftime :: CTime -> CTime -> IO CDouble
- mktime :: Ptr Tm -> IO CTime
- time :: Ptr CTime -> IO CTime
- asctime :: Ptr Tm -> IO CString
- ctime :: Ptr CTime -> IO CString
- gmtime :: Ptr CTime -> IO (Ptr Tm)
- localtime :: Ptr CTime -> IO (Ptr Tm)
- strftime :: CString -> CSize -> CString -> Ptr Tm -> IO CSize
- _CLOCKS_PER_SEC :: CClock
- data Tm
- data Timeval