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From: Stephen Leake <Stephen.Leake@gsfc.nasa.gov>
Subject: Re: question about functions
Date: 2000/01/20
Message-ID: <un1q01s1n.fsf@gsfc.nasa.gov>#1/1
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Newsgroups: comp.lang.ada
Date: 2000-01-20T19:10:17+00:00
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"Pascal LEJEUNE" <pascal.lejeune@matra-transport.fr> writes:

> I explain :
> if C := f(A, B);
> 
> how can i know, in f, C's addres ?
> function f(A, B : in T) return T is
>    ...
> begin
>    ...
>    address of the result of f ?
>    ...
> end f;

You can't find the address of C from within f, in Ada, C, or any other
moderatly high level language. Only assembler lets you do that, as far
as I know.

If you could, what would you do with it? Maybe there is another way to
get the same effect.

One alternate approach that is possible in Ada is to pass the result
as an 'out' parameter :

procedure f (A, B : in T; C : out T);

now you can do C'Address.

I'd still like to know what you are going to do with it.

-- Stephe