1 -----------------------------------------------------------------------------
3 -- Module : System.Time
4 -- Copyright : (c) The University of Glasgow 2001
5 -- License : BSD-style (see the file libraries/base/LICENSE)
7 -- Maintainer : libraries@haskell.org
8 -- Stability : provisional
9 -- Portability : portable
11 -- The standard Time library.
13 -----------------------------------------------------------------------------
16 Haskell 98 Time of Day Library
17 ------------------------------
19 The Time library provides standard functionality for clock times,
20 including timezone information (i.e, the functionality of "time.h",
21 adapted to the Haskell environment), It follows RFC 1129 in its use of
22 Coordinated Universal Time (UTC).
24 2000/06/17 <michael.weber@post.rwth-aachen.de>:
26 * min./max. time diff currently is restricted to
27 [minBound::Int, maxBound::Int]
29 * surely other restrictions wrt. min/max bounds
35 `showTime' (used in `instance Show ClockTime') always prints time
36 converted to the local timezone (even if it is taken from
37 `(toClockTime . toUTCTime)'), whereas `calendarTimeToString'
38 honors the tzone & tz fields and prints UTC or whatever timezone
39 is stored inside CalendarTime.
41 Maybe `showTime' should be changed to use UTC, since it would
42 better correspond to the actual representation of `ClockTime'
43 (can be done by replacing localtime(3) by gmtime(3)).
47 * add proper handling of microsecs, currently, they're mostly
50 * `formatFOO' case of `%s' is currently broken...
54 * check for unusual date cases, like 1970/1/1 00:00h, and conversions
55 between different timezone's etc.
57 * check, what needs to be in the IO monad, the current situation
58 seems to be a bit inconsistent to me
60 * check whether `isDst = -1' works as expected on other arch's
63 * add functions to parse strings to `CalendarTime' (some day...)
65 * implement padding capabilities ("%_", "%-") in `formatFOO'
67 * add rfc822 timezone (+0200 is CEST) representation ("%z") in `formatFOO'
75 , ClockTime(..) -- non-standard, lib. report gives this as abstract
77 -- instance Show (non-standard)
82 , noTimeDiff -- non-standard (but useful when constructing TimeDiff vals.)
86 , normalizeTimeDiff -- non-standard
87 , timeDiffToString -- non-standard
88 , formatTimeDiff -- non-standard
94 , calendarTimeToString
99 #ifdef __GLASGOW_HASKELL__
105 #define HAVE_TM_ZONE 1
113 import System.IO.Unsafe
116 import Hugs.Time ( getClockTimePrim, toCalTimePrim, toClockTimePrim )
122 -- One way to partition and give name to chunks of a year and a week:
125 = January | February | March | April
126 | May | June | July | August
127 | September | October | November | December
128 deriving (Eq, Ord, Enum, Bounded, Ix, Read, Show)
131 = Sunday | Monday | Tuesday | Wednesday
132 | Thursday | Friday | Saturday
133 deriving (Eq, Ord, Enum, Bounded, Ix, Read, Show)
135 -- @ClockTime@ is an abstract type, used for the internal clock time.
136 -- Clock times may be compared, converted to strings, or converted to an
137 -- external calendar time @CalendarTime@.
139 data ClockTime = TOD Integer -- Seconds since 00:00:00 on 1 Jan 1970
140 Integer -- Picoseconds with the specified second
143 -- When a ClockTime is shown, it is converted to a CalendarTime in the current
144 -- timezone and then printed. FIXME: This is arguably wrong, since we can't
145 -- get the current timezone without being in the IO monad.
147 instance Show ClockTime where
148 showsPrec _ t = showString (calendarTimeToString
149 (unsafePerformIO (toCalendarTime t)))
152 @CalendarTime@ is a user-readable and manipulable
153 representation of the internal $ClockTime$ type. The
154 numeric fields have the following ranges.
160 year -maxInt .. maxInt [Pre-Gregorian dates are inaccurate]
161 mon 0 .. 11 [Jan = 0, Dec = 11]
165 sec 0 .. 61 [Allows for two leap seconds]
166 picosec 0 .. (10^12)-1 [This could be over-precise?]
167 wday 0 .. 6 [Sunday = 0, Saturday = 6]
168 yday 0 .. 365 [364 in non-Leap years]
169 tz -43200 .. 43200 [Variation from UTC in seconds]
172 The {\em tzname} field is the name of the time zone. The {\em isdst}
173 field indicates whether Daylight Savings Time would be in effect.
184 ctPicosec :: Integer,
191 deriving (Eq,Ord,Read,Show)
193 -- The @TimeDiff@ type records the difference between two clock times in
194 -- a user-readable way.
204 tdPicosec :: Integer -- not standard
206 deriving (Eq,Ord,Read,Show)
208 noTimeDiff :: TimeDiff
209 noTimeDiff = TimeDiff 0 0 0 0 0 0 0
211 -- -----------------------------------------------------------------------------
212 -- getClockTime returns the current time in its internal representation.
214 getClockTime :: IO ClockTime
217 (sec,usec) <- getClockTimePrim
218 return (TOD (fromIntegral sec) ((fromIntegral usec) * 1000000))
220 #elif HAVE_GETTIMEOFDAY
222 let realToInteger = round . realToFrac :: Real a => a -> Integer
223 allocaBytes (#const sizeof(struct timeval)) $ \ p_timeval -> do
224 throwErrnoIfMinus1_ "getClockTime" $ gettimeofday p_timeval nullPtr
225 sec <- (#peek struct timeval,tv_sec) p_timeval :: IO CTime
226 usec <- (#peek struct timeval,tv_usec) p_timeval :: IO CTime
227 return (TOD (realToInteger sec) ((realToInteger usec) * 1000000))
231 let realToInteger = round . realToFrac :: Real a => a -> Integer
232 allocaBytes (#const sizeof(struct timeb)) $ \ p_timeb -> do
234 sec <- (#peek struct timeb,time) p_timeb :: IO CTime
235 msec <- (#peek struct timeb,millitm) p_timeb :: IO CUShort
236 return (TOD (realToInteger sec) (fromIntegral msec * 1000000000))
238 #else /* use POSIX time() */
240 secs <- time nullPtr -- can't fail, according to POSIX
241 return (TOD (fromIntegral secs) 0)
245 -- -----------------------------------------------------------------------------
246 -- addToClockTime d t adds a time difference d and a
247 -- clock time t to yield a new clock time. The difference d
248 -- may be either positive or negative. diffClockTimes t1 t2 returns
249 -- the difference between two clock times t1 and t2 as a TimeDiff.
251 addToClockTime :: TimeDiff -> ClockTime -> ClockTime
252 addToClockTime (TimeDiff year mon day hour min sec psec)
255 sec_diff = toInteger sec +
257 3600 * toInteger hour +
258 24 * 3600 * toInteger day
259 cal = toUTCTime (TOD (c_sec + sec_diff) (c_psec + psec))
261 new_mon = fromEnum (ctMonth cal) + r_mon
265 | new_mon < 0 = (toEnum (12 + new_mon), (-1))
266 | new_mon > 11 = (toEnum (new_mon `mod` 12), 1)
267 | otherwise = (toEnum new_mon, 0)
269 (r_yr, r_mon) = mon `quotRem` 12
271 year' = ctYear cal + year + r_yr + yr_diff
273 toClockTime cal{ctMonth=month', ctYear=year'}
275 diffClockTimes :: ClockTime -> ClockTime -> TimeDiff
276 -- diffClockTimes is meant to be the dual to `addToClockTime'.
277 -- If you want to have the TimeDiff properly splitted, use
278 -- `normalizeTimeDiff' on this function's result
280 -- CAVEAT: see comment of normalizeTimeDiff
281 diffClockTimes (TOD sa pa) (TOD sb pb) =
282 noTimeDiff{ tdSec = fromIntegral (sa - sb)
283 -- FIXME: can handle just 68 years...
284 , tdPicosec = pa - pb
288 normalizeTimeDiff :: TimeDiff -> TimeDiff
289 -- FIXME: handle psecs properly
290 -- FIXME: ?should be called by formatTimeDiff automagically?
292 -- when applied to something coming out of `diffClockTimes', you loose
293 -- the duality to `addToClockTime', since a year does not always have
296 -- apply this function as late as possible to prevent those "rounding"
298 normalizeTimeDiff td =
305 + 365 * tdYear td))))
307 (diffYears, rest1) = rest0 `quotRem` (365 * 24 * 3600)
308 (diffMonths, rest2) = rest1 `quotRem` (30 * 24 * 3600)
309 (diffDays, rest3) = rest2 `quotRem` (24 * 3600)
310 (diffHours, rest4) = rest3 `quotRem` 3600
311 (diffMins, diffSecs) = rest4 `quotRem` 60
313 td{ tdYear = diffYears
314 , tdMonth = diffMonths
322 -- -----------------------------------------------------------------------------
323 -- How do we deal with timezones on this architecture?
325 -- The POSIX way to do it is through the global variable tzname[].
326 -- But that's crap, so we do it The BSD Way if we can: namely use the
327 -- tm_zone and tm_gmtoff fields of struct tm, if they're available.
329 zone :: Ptr CTm -> IO (Ptr CChar)
330 gmtoff :: Ptr CTm -> IO CLong
332 zone x = (#peek struct tm,tm_zone) x
333 gmtoff x = (#peek struct tm,tm_gmtoff) x
335 #else /* ! HAVE_TM_ZONE */
336 # if HAVE_TZNAME || defined(_WIN32)
337 # if cygwin32_TARGET_OS
338 # define tzname _tzname
340 # ifndef mingw32_TARGET_OS
341 foreign import ccall unsafe "&tzname" tzname :: Ptr (Ptr CChar)
343 foreign import ccall unsafe "__hscore_timezone" timezone :: Ptr CLong
344 foreign import ccall unsafe "__hscore_tzname" tzname :: Ptr (Ptr CChar)
347 dst <- (#peek struct tm,tm_isdst) x
348 if dst then peekElemOff tzname 1 else peekElemOff tzname 0
349 # else /* ! HAVE_TZNAME */
350 -- We're in trouble. If you should end up here, please report this as a bug.
351 # error "Don't know how to get at timezone name on your OS."
352 # endif /* ! HAVE_TZNAME */
354 -- Get the offset in secs from UTC, if (struct tm) doesn't supply it. */
355 # if HAVE_DECL_ALTZONE
356 foreign import ccall "&altzone" altzone :: Ptr CTime
357 foreign import ccall "&timezone" timezone :: Ptr CTime
359 dst <- (#peek struct tm,tm_isdst) x
360 tz <- if dst then peek altzone else peek timezone
361 return (-fromIntegral tz)
362 # else /* ! HAVE_DECL_ALTZONE */
364 #if !defined(mingw32_TARGET_OS)
365 foreign import ccall "&timezone" timezone :: Ptr CLong
368 -- Assume that DST offset is 1 hour ...
370 dst <- (#peek struct tm,tm_isdst) x
372 -- According to the documentation for tzset(),
373 -- http://www.opengroup.org/onlinepubs/007908799/xsh/tzset.html
374 -- timezone offsets are > 0 west of the Prime Meridian.
376 -- This module assumes the interpretation of tm_gmtoff, i.e., offsets
377 -- are > 0 East of the Prime Meridian, so flip the sign.
378 return (- (if dst then (fromIntegral tz - 3600) else tz))
379 # endif /* ! HAVE_DECL_ALTZONE */
380 #endif /* ! HAVE_TM_ZONE */
381 #endif /* ! __HUGS__ */
383 -- -----------------------------------------------------------------------------
384 -- toCalendarTime t converts t to a local time, modified by
385 -- the current timezone and daylight savings time settings. toUTCTime
386 -- t converts t into UTC time. toClockTime l converts l into the
387 -- corresponding internal ClockTime. The wday, yday, tzname, and isdst fields
391 toCalendarTime :: ClockTime -> IO CalendarTime
393 toCalendarTime = toCalTime False
394 #elif HAVE_LOCALTIME_R
395 toCalendarTime = clockToCalendarTime_reentrant (throwAwayReturnPointer localtime_r) False
397 toCalendarTime = clockToCalendarTime_static localtime False
400 toUTCTime :: ClockTime -> CalendarTime
402 toUTCTime = unsafePerformIO . toCalTime True
404 toUTCTime = unsafePerformIO . clockToCalendarTime_reentrant (throwAwayReturnPointer gmtime_r) True
406 toUTCTime = unsafePerformIO . clockToCalendarTime_static gmtime True
410 toCalTime :: Bool -> ClockTime -> IO CalendarTime
411 toCalTime toUTC (TOD s psecs)
412 | (s > fromIntegral (maxBound :: Int)) ||
413 (s < fromIntegral (minBound :: Int))
414 = error ((if toUTC then "toUTCTime: " else "toCalendarTime: ") ++
415 "clock secs out of range")
417 (sec,min,hour,mday,mon,year,wday,yday,isdst,zone,off) <-
418 toCalTimePrim (if toUTC then 1 else 0) (fromIntegral s)
419 return (CalendarTime{ ctYear=1900+year
428 , ctTZName=(if toUTC then "UTC" else zone)
429 , ctTZ=(if toUTC then 0 else off)
430 , ctIsDST=not toUTC && (isdst/=0)
432 #else /* ! __HUGS__ */
433 throwAwayReturnPointer :: (Ptr CTime -> Ptr CTm -> IO (Ptr CTm))
434 -> (Ptr CTime -> Ptr CTm -> IO ( ))
435 throwAwayReturnPointer fun x y = fun x y >> return ()
437 clockToCalendarTime_static :: (Ptr CTime -> IO (Ptr CTm)) -> Bool -> ClockTime
439 clockToCalendarTime_static fun is_utc (TOD secs psec) = do
440 with (fromIntegral secs :: CTime) $ \ p_timer -> do
441 p_tm <- fun p_timer -- can't fail, according to POSIX
442 clockToCalendarTime_aux is_utc p_tm psec
444 clockToCalendarTime_reentrant :: (Ptr CTime -> Ptr CTm -> IO ()) -> Bool -> ClockTime
446 clockToCalendarTime_reentrant fun is_utc (TOD secs psec) = do
447 with (fromIntegral secs :: CTime) $ \ p_timer -> do
448 allocaBytes (#const sizeof(struct tm)) $ \ p_tm -> do
450 clockToCalendarTime_aux is_utc p_tm psec
452 clockToCalendarTime_aux :: Bool -> Ptr CTm -> Integer -> IO CalendarTime
453 clockToCalendarTime_aux is_utc p_tm psec = do
454 sec <- (#peek struct tm,tm_sec ) p_tm :: IO CInt
455 min <- (#peek struct tm,tm_min ) p_tm :: IO CInt
456 hour <- (#peek struct tm,tm_hour ) p_tm :: IO CInt
457 mday <- (#peek struct tm,tm_mday ) p_tm :: IO CInt
458 mon <- (#peek struct tm,tm_mon ) p_tm :: IO CInt
459 year <- (#peek struct tm,tm_year ) p_tm :: IO CInt
460 wday <- (#peek struct tm,tm_wday ) p_tm :: IO CInt
461 yday <- (#peek struct tm,tm_yday ) p_tm :: IO CInt
462 isdst <- (#peek struct tm,tm_isdst) p_tm :: IO CInt
466 tzname <- peekCString zone
468 let month | mon >= 0 && mon <= 11 = toEnum (fromIntegral mon)
469 | otherwise = error ("toCalendarTime: illegal month value: " ++ show mon)
472 (1900 + fromIntegral year)
479 (toEnum (fromIntegral wday))
481 (if is_utc then "UTC" else tzname)
482 (if is_utc then 0 else fromIntegral tz)
483 (if is_utc then False else isdst /= 0))
484 #endif /* ! __HUGS__ */
486 toClockTime :: CalendarTime -> ClockTime
488 toClockTime (CalendarTime yr mon mday hour min sec psec
489 _wday _yday _tzname tz _isdst) =
491 s <- toClockTimePrim (yr-1900) (fromEnum mon) mday hour min sec tz
492 return (TOD (fromIntegral s) psec)
493 #else /* ! __HUGS__ */
494 toClockTime (CalendarTime year mon mday hour min sec psec
495 _wday _yday _tzname tz isdst) =
497 -- `isDst' causes the date to be wrong by one hour...
498 -- FIXME: check, whether this works on other arch's than Linux, too...
500 -- so we set it to (-1) (means `unknown') and let `mktime' determine
502 let isDst = -1 :: CInt in -- if isdst then (1::Int) else 0
504 if psec < 0 || psec > 999999999999 then
505 error "Time.toClockTime: picoseconds out of range"
506 else if tz < -43200 || tz > 43200 then
507 error "Time.toClockTime: timezone offset out of range"
510 allocaBytes (#const sizeof(struct tm)) $ \ p_tm -> do
511 (#poke struct tm,tm_sec ) p_tm (fromIntegral sec :: CInt)
512 (#poke struct tm,tm_min ) p_tm (fromIntegral min :: CInt)
513 (#poke struct tm,tm_hour ) p_tm (fromIntegral hour :: CInt)
514 (#poke struct tm,tm_mday ) p_tm (fromIntegral mday :: CInt)
515 (#poke struct tm,tm_mon ) p_tm (fromIntegral (fromEnum mon) :: CInt)
516 (#poke struct tm,tm_year ) p_tm (fromIntegral year - 1900 :: CInt)
517 (#poke struct tm,tm_isdst) p_tm isDst
518 t <- throwIf (== -1) (\_ -> "Time.toClockTime: invalid input")
521 -- mktime expects its argument to be in the local timezone, but
522 -- toUTCTime makes UTC-encoded CalendarTime's ...
524 -- Since there is no any_tz_struct_tm-to-time_t conversion
525 -- function, we have to fake one... :-) If not in all, it works in
526 -- most cases (before, it was the other way round...)
528 -- Luckily, mktime tells us, what it *thinks* the timezone is, so,
529 -- to compensate, we add the timezone difference to mktime's
532 gmtoff <- gmtoff p_tm
533 let realToInteger = round . realToFrac :: Real a => a -> Integer
534 res = realToInteger t - fromIntegral tz + fromIntegral gmtoff
535 return (TOD res psec)
536 #endif /* ! __HUGS__ */
538 -- -----------------------------------------------------------------------------
539 -- Converting time values to strings.
541 calendarTimeToString :: CalendarTime -> String
542 calendarTimeToString = formatCalendarTime defaultTimeLocale "%c"
544 formatCalendarTime :: TimeLocale -> String -> CalendarTime -> String
545 formatCalendarTime l fmt (CalendarTime year mon day hour min sec _
546 wday yday tzname _ _) =
548 where doFmt ('%':'-':cs) = doFmt ('%':cs) -- padding not implemented
549 doFmt ('%':'_':cs) = doFmt ('%':cs) -- padding not implemented
550 doFmt ('%':c:cs) = decode c ++ doFmt cs
551 doFmt (c:cs) = c : doFmt cs
554 decode 'A' = fst (wDays l !! fromEnum wday) -- day of the week, full name
555 decode 'a' = snd (wDays l !! fromEnum wday) -- day of the week, abbrev.
556 decode 'B' = fst (months l !! fromEnum mon) -- month, full name
557 decode 'b' = snd (months l !! fromEnum mon) -- month, abbrev
558 decode 'h' = snd (months l !! fromEnum mon) -- ditto
559 decode 'C' = show2 (year `quot` 100) -- century
560 decode 'c' = doFmt (dateTimeFmt l) -- locale's data and time format.
561 decode 'D' = doFmt "%m/%d/%y"
562 decode 'd' = show2 day -- day of the month
563 decode 'e' = show2' day -- ditto, padded
564 decode 'H' = show2 hour -- hours, 24-hour clock, padded
565 decode 'I' = show2 (to12 hour) -- hours, 12-hour clock
566 decode 'j' = show3 yday -- day of the year
567 decode 'k' = show2' hour -- hours, 24-hour clock, no padding
568 decode 'l' = show2' (to12 hour) -- hours, 12-hour clock, no padding
569 decode 'M' = show2 min -- minutes
570 decode 'm' = show2 (fromEnum mon+1) -- numeric month
572 decode 'p' = (if hour < 12 then fst else snd) (amPm l) -- am or pm
573 decode 'R' = doFmt "%H:%M"
574 decode 'r' = doFmt (time12Fmt l)
575 decode 'T' = doFmt "%H:%M:%S"
577 decode 'S' = show2 sec -- seconds
578 decode 's' = show2 sec -- number of secs since Epoch. (ToDo.)
579 decode 'U' = show2 ((yday + 7 - fromEnum wday) `div` 7) -- week number, starting on Sunday.
580 decode 'u' = show (let n = fromEnum wday in -- numeric day of the week (1=Monday, 7=Sunday)
581 if n == 0 then 7 else n)
582 decode 'V' = -- week number (as per ISO-8601.)
583 let (week, days) = -- [yep, I've always wanted to be able to display that too.]
584 (yday + 7 - if fromEnum wday > 0 then
585 fromEnum wday - 1 else 6) `divMod` 7
586 in show2 (if days >= 4 then
588 else if week == 0 then 53 else week)
590 decode 'W' = -- week number, weeks starting on monday
591 show2 ((yday + 7 - if fromEnum wday > 0 then
592 fromEnum wday - 1 else 6) `div` 7)
593 decode 'w' = show (fromEnum wday) -- numeric day of the week, weeks starting on Sunday.
594 decode 'X' = doFmt (timeFmt l) -- locale's preferred way of printing time.
595 decode 'x' = doFmt (dateFmt l) -- locale's preferred way of printing dates.
596 decode 'Y' = show year -- year, including century.
597 decode 'y' = show2 (year `rem` 100) -- year, within century.
598 decode 'Z' = tzname -- timezone name
603 show2, show2', show3 :: Int -> String
605 | x' < 10 = '0': show x'
606 | otherwise = show x'
607 where x' = x `rem` 100
610 | x' < 10 = ' ': show x'
611 | otherwise = show x'
612 where x' = x `rem` 100
614 show3 x = show (x `quot` 100) ++ show2 (x `rem` 100)
615 where x' = x `rem` 1000
618 to12 h = let h' = h `mod` 12 in if h' == 0 then 12 else h'
620 -- Useful extensions for formatting TimeDiffs.
622 timeDiffToString :: TimeDiff -> String
623 timeDiffToString = formatTimeDiff defaultTimeLocale "%c"
625 formatTimeDiff :: TimeLocale -> String -> TimeDiff -> String
626 formatTimeDiff l fmt td@(TimeDiff year month day hour min sec _)
630 doFmt ('%':'-':cs) = doFmt ('%':cs) -- padding not implemented
631 doFmt ('%':'_':cs) = doFmt ('%':cs) -- padding not implemented
632 doFmt ('%':c:cs) = decode c ++ doFmt cs
633 doFmt (c:cs) = c : doFmt cs
637 'B' -> fst (months l !! fromEnum month)
638 'b' -> snd (months l !! fromEnum month)
639 'h' -> snd (months l !! fromEnum month)
640 'c' -> defaultTimeDiffFmt td
641 'C' -> show2 (year `quot` 100)
642 'D' -> doFmt "%m/%d/%y"
646 'I' -> show2 (to12 hour)
648 'l' -> show2' (to12 hour)
650 'm' -> show2 (fromEnum month + 1)
652 'p' -> (if hour < 12 then fst else snd) (amPm l)
654 'r' -> doFmt (time12Fmt l)
655 'T' -> doFmt "%H:%M:%S"
658 's' -> show2 sec -- Implementation-dependent, sez the lib doc..
659 'X' -> doFmt (timeFmt l)
660 'x' -> doFmt (dateFmt l)
662 'y' -> show2 (year `rem` 100)
666 defaultTimeDiffFmt (TimeDiff year month day hour min sec _) =
667 foldr (\ (v,s) rest ->
669 then show v ++ ' ':(addS v s)
670 ++ if null rest then "" else ", "
674 (zip [year, month, day, hour, min, sec] (intervals l))
676 addS v s = if abs v == 1 then fst s else snd s
679 -- -----------------------------------------------------------------------------
680 -- Foreign time interface (POSIX)
682 type CTm = () -- struct tm
685 foreign import ccall unsafe localtime_r :: Ptr CTime -> Ptr CTm -> IO (Ptr CTm)
687 foreign import ccall unsafe localtime :: Ptr CTime -> IO (Ptr CTm)
690 foreign import ccall unsafe gmtime_r :: Ptr CTime -> Ptr CTm -> IO (Ptr CTm)
692 foreign import ccall unsafe gmtime :: Ptr CTime -> IO (Ptr CTm)
694 foreign import ccall unsafe mktime :: Ptr CTm -> IO CTime
695 foreign import ccall unsafe time :: Ptr CTime -> IO CTime
697 #if HAVE_GETTIMEOFDAY
699 foreign import ccall unsafe gettimeofday :: Ptr CTimeVal -> Ptr () -> IO CInt
704 #ifndef mingw32_TARGET_OS
705 foreign import ccall unsafe ftime :: Ptr CTimeB -> IO CInt
707 foreign import ccall unsafe ftime :: Ptr CTimeB -> IO ()
710 #endif /* ! __HUGS__ */