From: Alexander Fuchs <alexander.fuchs@epost.de>
To: Anastasia Gornostaeva <ermine@ermine.pp.ru>
Cc: Caml-list@yquem.inria.fr
Subject: Re: [Caml-list] .-
Date: Fri, 24 Dec 2004 12:07:35 +0100 [thread overview]
Message-ID: <41CBF877.3070102@epost.de> (raw)
In-Reply-To: <20041224100422.GA10012@ermine.home>
Anastasia Gornostaeva wrote:
> open Unix
>
> let _ =
> let curr_time = time () in
> let curr_tm = gmtime curr_time in
> let new_time, _ = mktime {curr_tm with tm_hour = curr_tm.tm_hour+1} in
> let diff = new_time -. curr_time in
> Printf.printf "%f\n%f\n%f\n"
> curr_time
> new_time
> diff
>
>
> gives an negative result -7200.000000. Why?
Form the manual:
gmtime : Assumes UTC (Coordinated Universal Time), also known as GMT.
mktime : The tm argument is interpreted in the local time zone.
So, actually you compare GMT with your local time zone, which in my case
(Germany) returns 0 for the above example.
Try localtime instead of gmtime:
localtime : Assumes the local time zone.
Alex
next prev parent reply other threads:[~2004-12-24 11:07 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-24 10:04 .- Anastasia Gornostaeva
2004-12-24 10:53 ` [Caml-list] .- Benjamin Geer
2004-12-24 11:25 ` skaller
2004-12-24 11:34 ` Benjamin Geer
2004-12-24 11:07 ` Alexander Fuchs [this message]
2004-12-24 11:27 ` Anastasia Gornostaeva
2004-12-24 11:14 ` Julien Cristau
2004-12-24 11:19 ` skaller
2004-12-24 12:14 ` Anastasia Gornostaeva
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