    -- | System time
    module Sound.Osc.Time.System where

    import Data.Int {- base -}
    import Data.Word {- base -}

    import qualified Data.Time.Clock.System as Clock.System {- time >= 1.8 -}

    import qualified Sound.Osc.Time as Time {- hosc -}

    {- | Get the system time, epoch start of 1970 UTC, leap-seconds ignored.
      getSystemTime is typically much faster than getCurrentTime, however it is not available in Hugs.
    -}
    getSystemTimeAsNtpReal :: IO Time.NtpReal
    getSystemTimeAsNtpReal :: IO NtpReal
    getSystemTimeAsNtpReal = do
      tm <- IO SystemTime
    Clock.System.getSystemTime
      return (fromIntegral (Clock.System.systemSeconds tm) + (fromIntegral (Clock.System.systemNanoseconds tm) * 1.0e-9))

    -- | System time with fractional part in microseconds (us) instead of nanoseconds (ns).
    getSystemTimeInMicroseconds :: IO (Int64, Word32)
    getSystemTimeInMicroseconds :: IO (Int64, Word32)
    getSystemTimeInMicroseconds = do
      tm <- IO SystemTime
    Clock.System.getSystemTime
      let sec = SystemTime -> Int64
    Clock.System.systemSeconds SystemTime
    tm
          usec = SystemTime -> Word32
    Clock.System.systemNanoseconds SystemTime
    tm Word32 -> Word32 -> Word32
    forall a. Integral a => a -> a -> a
    `div` Word32
    1000
      return (sec, usec)