From: Stephen Leake <stephen_leake@acm.org>
To: comp.lang.ada@ada-france.org
Subject: Re: integer types and reference manual
Date: 20 Jul 2004 10:44:05 -0400
Date: 2004-07-20T10:44:05-04:00 [thread overview]
Message-ID: <mailman.30.1090334661.416.comp.lang.ada@ada-france.org> (raw)
In-Reply-To: <5f59677c.0407200541.43a6cb68@posting.google.com>
evangeli@cnam.fr (Evangelista Sami) writes:
> hello all
>
> just two questions about this sample code :
>
> 01 procedure Test is
> 02 type U is range 1..100;
> 03 N : constant U := 100;
> 04 type T is mod N + 10;
> 05 begin
> 06 null;
> 07 end;
>
>
> 1) what is the type of N + 10 ?
ARM 3.5.4 (5) says it's of "any integer type". Loosely speaking, you
can think of it as "universal integer".
> 2) in the syntax summary of the RM there is the token
> "static_expression". what is it exactly?
To answer that precisely, you need to study the Annotated Ada
Reference manual in detail. Available at
http://www.adaic.com/standards/ada95.html, and in Emacs Info format at
http://www.adaic.com/standards/ada95.html
> an expression which value can be computed at the compilation time?
That's close enough for most purposes. The compiler will give you an
error when you hit a corner case where it's not "close enough".
--
-- Stephe
next prev parent reply other threads:[~2004-07-20 14:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-20 13:41 integer types and reference manual Evangelista Sami
2004-07-20 14:44 ` Stephen Leake [this message]
2004-07-20 18:53 ` Jeffrey Carter
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