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Newsgroups: comp.lang.ada
Date: Wed, 25 Jan 2017 10:35:03 -0800 (PST)
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Subject: Re: Ada.Numerics.Long_Real_Arrays
From: hnptz@yahoo.de
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Xref: news.eternal-september.org comp.lang.ada:33163
Date: 2017-01-25T10:35:03-08:00
List-Id: <comp.lang.ada>

On Wednesday, January 25, 2017 at 1:25:18 PM UTC+1, hn...@yahoo.de wrote:
> Hi,
>=20
> these are my definitions:
>=20
> with Ada.Numerics.Long_Real_Arrays; use Ada.Numerics.Long_Real_Arrays;
> package nm is
>=20
> Np : Positive;
> Type R_Vector is new Real_Vector (1..Np);
> Type R_Matrix is array (Positive range <>) of R_Vector;
>=20
> procedure nm1 (P : in out R_Matrix);
>=20
> end nm;
>=20
> -- definition of procedure nm1 in package body nm done.
>=20
> now in procedure test_nm.adb (only definitions):
>=20
> Np : Positive :=3D 2;
> Mp : Positive :=3D Np+1;
>=20
> 24  P : R_Matrix(1..Mp) :=3D ((x,x),(y,y),(z,z));
>=20
> no "build all" error or warning
>=20
> result when running:
>=20
> raised CONSTRAINT_ERROR : test_nm.adb: 24 length check failed.
>=20
> Can you help?

I was hesitating to use generic in this example, as it produces more code. =
I'm using generic procedure with function definition and supplementary inst=
antiation anyway, and running out of sensible names is another issue concer=
ning transparency and elegance. However, thanks for definitely pointing to =
a generic solution.