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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: can Ada give run-time error or warning for integer division with
 non-zero remainder?
Date: Sun, 12 Aug 2012 08:45:03 +0200
Organization: cbb software GmbH
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References: <k07028$eok$1@speranza.aioe.org>
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Date: 2012-08-12T08:45:03+02:00
List-Id: <comp.lang.ada>

On Sat, 11 Aug 2012 20:14:42 -0500, Nasser M. Abbasi wrote:

> In Ada when dividing 2 integers, the result is an integer
> with the remainder ignored.  Hence 3/2 gives 1
> 
> ----------------------------------
> with Ada.Integer_Text_IO ; use Ada.Integer_Text_IO ;
> 
> procedure foo4 is
>    N : constant integer := 3;
>    M : integer;
>    
>    begin
>      M := N/2;
>      put(M);
>         
> end foo4;
> --------------------------
> 
>>gnatmake foo4.adb
>>./foo4
>            1
> Now, suppose I want to know that a division between 2 integers
> has resulted in nonzero remainder that was thrown away. May be
> because my algorithm is meant to work only for even values and
> an odd value means there was a bug somewhere and I want to
> know about it.

It is not integer division then. You could use integer interval division
instead: [3, 3] / [2, 2] = [1, 2].

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