Re: Ada equivalent for C-pointer?

[Nick Roberts <nick.roberts@acm.org>]

Alfred Hilscher <SPAM@alfred-hilscher.de> wrote:

> I want to interface to a C-function expecting a "far *", what have I to
> pass: an "access all ..." or "System.Address"? Are there differences
> between access and address, or are their internal representations equal? I
> use GNAT 3.15p.

Assuming you are passing parameters to a C function, it should be very
simple.

For example, if there is a C function defined thus:

   int wibble(int *n);

then in Ada you can declare:

   function Wibble (Number: in out Interfaces.C.int);
   pragma Import(C,Wibble,"wibble");

and it should work. (Obviously, you must link the C functions in somehow.)

If you were to give more information about what you are really trying to
achieve, we can probably give you more accurate and detailed answers.

-- 
Nick Roberts