I can't find document for System.Time . But I can import System.Time . It's weird... I can't find document for TimeDiff and related functions. I guess this is all deprecated. A related bug report: http://hackage.haskell.org/trac/ghc/ticket/2519 I would use Data.Time.Clock Prelude> :m + Data.Time.Clock Prelude Data.Time.Clock> getCurrentTime Prelude Data.Time.Clock> t0 <- getCurrentTime Prelude Data.Time.Clock> t1 <- getCurrentTime Prelude Data.Time.Clock> t0 Prelude Data.Time.Clock> diffUTCTime t0 t1 -2.912s Prelude Data.Time.Clock> diffUTCTime t1 t0 2.912s Prelude Data.Time.Clock> :t diffUTCTime t1 t0 diffUTCTime t1 t0 :: NominalDiffTime On Mon, Dec 1, 2008 at 10:05 PM, Jason Dusek wrote:

I'm on 6.10.1, using the libs provided with the binary of GHC for Mac OS X. I was fooling around with the time package in GHCi and something seems to be off. I have included a transcript.

If I take a time diff, then the seconds are positive when the picos are negative and vice versa.

-- _jsn

|...transcript...|

Prelude System.Time> :m + System.Time Prelude System.Time> t0 <- System.Time.getClockTime Prelude System.Time> t1 <- System.Time.getClockTime Prelude System.Time> diffClockTimes t0 t1 TimeDiff { tdYear = 0 , tdMonth = 0 , tdDay = 0 , tdHour = 0 , tdMin = 0 , tdSec = -7 , tdPicosec = 238846000000 } Prelude System.Time> diffClockTimes t1 t0 TimeDiff { tdYear = 0 , tdMonth = 0 , tdDay = 0 , tdHour = 0 , tdMin = 0 , tdSec = 7 , tdPicosec = -238846000000 } _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe