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Newsgroups: comp.lang.ada
Date: Fri, 5 Jun 2020 08:45:57 -0700 (PDT)
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Subject: Re: generic with function procedure
From: Gilbert Gosseyn <hnptz@yahoo.de>
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Xref: reader01.eternal-september.org comp.lang.ada:58971
Date: 2020-06-05T08:45:57-07:00
List-Id: <comp.lang.ada>

On Friday, June 5, 2020 at 4:52:13 PM UTC+2, gautier...@hotmail.com wrote:
> It depends on how you have defined g1 and h1...
> You may also want to pass Real as a generic parameter to make your "denm"=
 package work for any precision. Perhaps doing so will solve your problem b=
y the way.
> Here is a package from Mathpaqs, as an inspiration.
>=20
> with Ada.Numerics.Generic_Real_Arrays;
>=20
> generic
>   type Real is digits <>;
>   with package Real_Arrays is new Ada.Numerics.Generic_Real_Arrays (Real)=
;
>   type Integer_Vector is array (Integer range <>) of Integer;
>=20
> package Generic_Real_Linear_Equations is
>=20
>   use Real_Arrays;
>=20
>   function Linear_Equations ( A : Real_Matrix ;
>                               Y : Real_Vector ) return Real_Vector ;
> ...

I used already:
type Real is digits 18;
package Real_Arrays is instantiated with type Real from above.

Please explain: "It depends on how you have defined g1 and h1...". The func=
tions g1 and h1 are defined in the same manner a f1. If I restrict the nume=
r of with-clauses to one, then there is no error-message.

Thank you for your example. I am still studying it and I can see that it us=
es different methods in seperate programs with usual parameters. However, t=
here are no functions as parameters involved. As in Ada you cannot use  fun=
ctions as parameters eg in a procedure, the with clause may be used. My pro=
blem is still how to use the with clause correctly?