Re: Function definitions

[Simon Clubley <clubley@remove_me.eisner.decus.org-Earth.UFP>]

On 2014-06-20, montgrimpulo <aghte@hotlinemail.com> wrote:
>
> Hi,
> What would be an answer to the following question:
> There are three files : search.ads, search.adb, main_search.adb.
>  
>  In search.ads two functions are defined:  function F and function G, as
>  
> function F (V : Individual) return Long_Float; and
>  
> function G(M : Natural; V : Individual) return Long_Float;
>  
> Individual is defined as a Record containing several arrays
> with a size determined by variables, eg . 
>
> type Individual is record
>  X : x_array (0 .. P);
>  Y : y_array (0 .. Q);
>  Z : z_array (0 .. R);
> end record;
>
> In search.adb there are several procedures using the functions F and G
> defined in search.ads.
>
> The general search procedure g_search (P, Q, R) (defined in search.adb) is
> called in main_search.adb. 
>
> As I want to define  the internal statements of F and G, and other
> paramenters, (eg. P,Q,R), only in file main_search.adb, I don't know how to
> define F and G in search.ads / search.adb, as their body is claimed to be
> missing in search.adb.

It sounds like you have the spec for F and G in search.ads (which is
probably correct) but instead of placing the body in search.adb, you
want to place it in an unrelated main_search.adb.

If so, that's wrong; the body belongs in search.adb. You then "with",
in main_search.adb, the "search" package and reference it from
main_search.adb.

If you have attempted to place the body for F and G in search.adb and
failed, we need to see example code _and_ the _exact_ error messages.

Simon.

-- 
Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP
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