From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=unavailable autolearn_force=no version=3.4.4
X-Received: by 10.107.25.139 with SMTP id 133mr81328849ioz.4.1451947143430;
        Mon, 04 Jan 2016 14:39:03 -0800 (PST)
X-Received: by 10.182.250.169 with SMTP id zd9mr717026obc.1.1451947143409;
 Mon, 04 Jan 2016 14:39:03 -0800 (PST)
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!feeder.eternal-september.org!news.glorb.com!mv3no25838552igc.0!news-out.google.com!l1ni3822igd.0!nntp.google.com!mv3no18147599igc.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Mon, 4 Jan 2016 14:39:03 -0800 (PST)
In-Reply-To: <n6en12$5jn$2@gioia.aioe.org>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=149.32.224.36;
 posting-account=Qh2kiQoAAADpCLlhT_KTYoGO8dU3n4I6
NNTP-Posting-Host: 149.32.224.36
References: <7dcd49f3-b04f-4ea3-b431-5c27f73b9afe@googlegroups.com>
 <87poxixqmy.fsf@theworld.com>
 <b5dcba43-8652-40f0-8115-a235c6c83544@googlegroups.com>
 <f2fabc7b-a6a4-49db-85ac-d0fedf6cf95e@googlegroups.com>
 <n6en12$5jn$2@gioia.aioe.org>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <ab103d0d-d1b9-437e-aa5f-cfe3f6dd64bf@googlegroups.com>
Subject: Re: Instantiating package problems
From: Anh Vo <anhvofrcaus@gmail.com>
Injection-Date: Mon, 04 Jan 2016 22:39:03 +0000
Content-Type: text/plain; charset=ISO-8859-1
Xref: news.eternal-september.org comp.lang.ada:29014
Date: 2016-01-04T14:39:03-08:00
List-Id: <comp.lang.ada>

On Monday, January 4, 2016 at 1:10:59 PM UTC-8, Dmitry A. Kazakov wrote:
> On 2016-01-04 21:49, Anh Vo wrote:
> > On Sunday, January 3, 2016 at 4:07:30 PM UTC-8, Andrew Shvets wrote:
> >> Hi Bob,
> >>
> >> Thanks for writing back.  This is the entire example:
> >> http://pastebin.com/GEJT3WzL
> >
> > Just recommend to add a precondition to function Division as shown below.
>  > By the way, this feature is part of latest Ada (Ada 2012). In addition,
>  > you should think about adding precondition to other operations such as
>  > Addition where Input1 + Input2 <= Integer'Last and Input1 + Input2 >= 
> Integer'Last.
> >
> >    function Division(
> >      Input1 : in Integer;
> >      Input2 : in Integer)
> >        return Integer
> >     with pre => Input2 /= 0;
> 
> The correct precondition of integer division is
> 
>     Input1/Input2 in Integer'Range
> 
> Note that it precludes zero divide, provided Ada 2012 can understand it, 
> according to 3.5.4 (8) it must, but I am not a language lawer.

Neither, I am a language lawyer. However, did not see paragraph LRM 3.5.4 (8) precluded zero divide for Integer type.
  
Anh Vo