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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Practicalities of Ada for app development
Date: Sun, 10 Jun 2012 21:33:14 +0200
Organization: cbb software GmbH
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Date: 2012-06-10T21:33:14+02:00
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On Sun, 10 Jun 2012 19:18:09 +0200, Yannick Duch�ne (Hibou57) wrote:

> Please, why have you defined Code_Point as a modular type?
> 
> http://www.dmitry-kazakov.de/ada/strings_edit.htm#7
> 
> Why
> 
>     type Code_Point  is mod 2 ** 32;
> 
> instead of
> 
>     type Code_Point  is range 0 .. ((2 ** 32) - 1);

Because code point is unsigned. When you declare something signed you do
that because you want negative inverses. Signed integers have the base type
with 0 in the middle of its range.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de