From: dennison@telepath.com
Subject: Re: Importing a Unix function call
Date: 1998/12/04
Date: 1998-12-04T00:00:00+00:00 [thread overview]
Message-ID: <749q8c$2kn$1@nnrp1.dejanews.com> (raw)
In-Reply-To: 36683FA3.2512DECF@ndirect.co.uk
In article <36683FA3.2512DECF@ndirect.co.uk>,
Steve Crowe <stevecrowe@ndirect.co.uk> wrote:
> Someone has bound to have done this before... hopefully.
>
> Using Ada to import a function is easy, but if the function parameter
> returns
> a value, how is the Ada error overcome. As I want the return value as
> well
> as the out parameter. Is there away round this using a pragma?
>
> GNAT AdA compiler running under Unix, the function being imported is a
> Unix 'pipe'.
If you are using gnat, you can use pragma Import_Valued_Procedure.
The portable way around this problem is to pass the parameters the same way C
does: all "in"s, with some being pointer objects. C doesn't have "out"
parameters either, you know.
--
T.E.D.
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next prev parent reply other threads:[~1998-12-04 0:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-12-04 0:00 Importing a Unix function call Steve Crowe
1998-12-04 0:00 ` dennison [this message]
1998-12-04 0:00 ` Larry Kilgallen
1998-12-04 0:00 ` David Botton
1998-12-05 0:00 ` Larry Kilgallen
1998-12-06 0:00 ` Matthew Heaney
1998-12-06 0:00 ` David Botton
1998-12-06 0:00 ` Matthew Heaney
1998-12-07 0:00 ` dennison
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