From: Nick Roberts <nick.roberts@acm.org>
Subject: Re: Ada equivalent for C-pointer?
Date: Sat, 15 Jan 2005 16:50:28 +0000
Date: 2005-01-15T16:50:28+00:00 [thread overview]
Message-ID: <gemini.iadas3002srzn02bc.nick.roberts@acm.org> (raw)
In-Reply-To: u651y3bfs.fsf@obry.net
Pascal Obry <pascal@obry.net> wrote:
> I don't think so. Here Number will be passed by value, no?
No, I don't think so (with GNAT/GCC).
> And you also need the returned value ;)
Yes, oops!
> So, you probably want:
>
> function Wibble (Number: access Interfaces.C.int)
> return Interfaces.C.int;
>
> pragma Import(C,Wibble,"wibble");
I think the 'in out' mode would work with GNAT/GCC, but I'd suggest testing
it to make sure. I suppose using the 'access' mode might be clearer, and it
might be slightly more efficient.
--
Nick Roberts
next prev parent reply other threads:[~2005-01-15 16:50 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-14 16:41 Ada equivalent for C-pointer? Alfred Hilscher
2005-01-14 17:00 ` Duncan Sands
2005-01-14 20:05 ` tmoran
2005-01-15 5:00 ` Brian May
2005-01-14 22:33 ` Keith Thompson
2005-01-14 23:03 ` Stephen Leake
2005-01-15 15:51 ` Nick Roberts
2005-01-15 18:54 ` tmoran
2005-01-16 1:43 ` Keith Thompson
2005-01-17 21:35 ` Randy Brukardt
2005-01-15 9:09 ` Martin Krischik
2005-01-15 16:03 ` Nick Roberts
2005-01-15 16:27 ` Pascal Obry
2005-01-15 16:50 ` Nick Roberts [this message]
2005-01-15 17:11 ` Simon Wright
2005-01-15 18:46 ` Nick Roberts
2005-01-15 17:49 ` Pascal Obry
2005-01-16 8:44 ` Martin Krischik
2005-01-16 9:58 ` Pascal Obry
2005-01-16 11:07 ` Martin Krischik
2005-01-16 8:36 ` Martin Krischik
2005-01-16 15:01 ` Niklas Holsti
2005-01-16 16:02 ` Martin Krischik
2005-01-17 15:33 ` Niklas Holsti
2005-01-16 20:39 ` Nick Roberts
2005-01-17 21:38 ` Randy Brukardt
2005-01-17 21:45 ` Pascal Obry
2005-01-17 13:11 ` Alfred Hilscher
2005-01-18 7:31 ` Keith Thompson
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