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From: Carsten Dominik <carsten.dominik@gmail.com>
To: Eric S Fraga <e.fraga@ucl.ac.uk>
Cc: nicholas.dokos@hp.com,
	Emacs Org mode mailing list <emacs-orgmode@gnu.org>
Subject: Re: dates before 1970
Date: Fri, 11 Mar 2011 16:28:29 +0100	[thread overview]
Message-ID: <52DFBD89-0FCB-4546-85F1-254370ADE4E0@gmail.com> (raw)
In-Reply-To: <877hc5eujx.fsf@pinto.chemeng.ucl.ac.uk>

Hi,

I asked in emacs-develop and got:

> by Andreas Schwabon 2011-03-11T13:19:43+00:00.
> 
> If your system's time-t is a signed 32-bit integer then your system is
> able to represent times between 1901-12-13 20:45:53 UTC and 2038-01-19
> 03:14:07 UTC. If your system's time-t is an unsigned 32-bit integer
> your system can represent times between 1970-01-01 00:00:00 UTC and
> 2106-02-07 06:28:15 UTC.
> Andreas.

So I am not sure what 64 bit systems do now or in the future, but
it seems that we need to live with a restriction for now.
Maybe this should be documented somewhere.

- Carsten


On Mar 11, 2011, at 1:00 PM, Eric S Fraga wrote:

> Carsten Dominik <carsten.dominik@gmail.com> writes:
> 
> [...]
> 
>> THis is exactly the point, that it depends on how Emacs was compiled,
>> and what kind of integer is used in the date representation.  Signed
>> or unsigend, 32 or 64 bits (I think).
> 
> Yes, that makes sense.
> 
>> For example, Bastien can represent dates before 1970. I cannot.
>> I can represent dates after 2038, Bastien cannot.
> 
> I can do before 1970 but not after 2038.  Interesting.
> -- 
> : Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 24.0.50.1
> : using Org-mode version 7.5 (release_7.5.27.gefa56)

- Carsten

  reply	other threads:[~2011-03-11 15:28 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-10 21:00 dates before 1970 Eric S Fraga
2011-03-10 23:06 ` Nick Dokos
2011-03-11  8:31   ` Bastien
2011-03-11  8:52     ` Carsten Dominik
2011-03-13  7:39     ` Carsten Dominik
2011-03-13 20:08       ` Eric S Fraga
2011-03-14  7:40         ` Carsten Dominik
2011-03-14  9:58           ` Bastien
2011-03-11  8:47   ` Eric S Fraga
2011-03-11 11:36     ` Carsten Dominik
2011-03-11 12:00       ` Eric S Fraga
2011-03-11 15:28         ` Carsten Dominik [this message]
2011-03-11 17:56           ` Gregor Zattler
2011-03-12 22:38           ` Robert Horn
2011-03-11 16:30       ` Nick Dokos
2011-03-14 10:21         ` Carsten Dominik
2011-03-14 15:11           ` Nick Dokos
2011-03-14 17:02             ` Carsten Dominik
2011-03-14 17:13               ` Nick Dokos
2011-03-14 18:12                 ` Achim Gratz
2011-03-15  7:24                   ` Carsten Dominik
2011-03-11 16:16     ` Nick Dokos

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