> ----- Original Message -----
> From: "Bernhard Treutwein" <jule{([at]})nowhere.xy> To: <blackbox{([at]})nowhere.xy> Sent: Sunday, July 02, 2000 12:23 PM
> Subject: Interfacing to C (variable argument list)
>
>
> > Hi folks,
> >
> > is there any chance to interface to variable argument lists
> > from CP, e.g.,
> >
> > printf ( format : ARRAY OF SHORTCHAR; arg0 ... : ANYPTR );
> >
> > or
> >
> > printf ( format : ARRAY OF SHORTCHAR; args : ARRAY OF ? );
> >
A separate definition is needed for every used signature:
PROCEDURE [ccall] printf0* ["printf"] (format : POINTER TO ARRAY [untagged]
OF SHORTCHAR);
PROCEDURE [ccall] printf1* ["printf"] (format : POINTER TO ARRAY [untagged]
OF SHORTCHAR; i: INTEGER);
PROCEDURE [ccall] printf2* ["printf"] (format : POINTER TO ARRAY [untagged]
OF SHORTCHAR; i, j: INTEGER);
PROCEDURE [ccall] printf3* ["printf"] (format : POINTER TO ARRAY [untagged]
OF SHORTCHAR; x: REAL);
etc.
The [ccall] switches to caller-removed parameters, which is mandatory for
open parameter lists.
Beat Heeb, Cuno Pfister
Oberon microsystems, Inc.
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Received on Tue Jul 04 2000 - 17:44:36 UTC