From: Jean-Christophe Filliatre <filliatr@lri.fr>
To: Hugues CASSE <casse@irit.fr>
Cc: CAML <caml-list@inria.fr>
Subject: Re: Logical operators...
Date: Fri, 27 Aug 1999 11:07:53 +0200 (MEST) [thread overview]
Message-ID: <14278.21865.527274.77945@pc89.lri.fr> (raw)
In-Reply-To: <37C52EEB.AE4@irit.fr>
On a 32 bits architecture, ocaml' integers are signed 31 bits (one bit
is reserved for the GC). Therefore :
======================================================================
# 0xffff0000;;
- : int = -65536
======================================================================
and that answers your question.
If you really need 32 bits integers, I've written a small 32 bits
integers library, which you can find here :
http://www.lri.fr/~filliatr/ftp/ocaml/int32/
You can use it freely, and even adapt it to unsigned integers if
necessary. Of course, there is a lack of performance compared to ocaml
integers.
Best regards,
--
Jean-Christophe FILLIATRE
mailto:Jean-Christophe.Filliatre@lri.fr
http://www.lri.fr/~filliatr
In his message of Thu August 26, 1999, Hugues CASSE writes:
> Is there a bug or is there a way to get the correct result...
>
> # 0xffff0000 lsr 16;;
> - : int = 32767
> while
> # 0x0000ffff;;
> - : int = 65535
next prev parent reply other threads:[~1999-08-28 17:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-08-26 12:11 Hugues CASSE
1999-08-26 23:18 ` John Prevost
1999-08-27 9:07 ` Jean-Christophe Filliatre [this message]
1999-08-27 9:49 ` Reinhard Budde
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=14278.21865.527274.77945@pc89.lri.fr \
--to=filliatr@lri.fr \
--cc=Jean-Christophe.Filliatre@lri.fr \
--cc=caml-list@inria.fr \
--cc=casse@irit.fr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox