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From: "Nasser M. Abbasi" <nma@12000.org>
Newsgroups: comp.lang.ada
Subject: can Ada give run-time error or warning for integer division with
 non-zero remainder?
Date: Sat, 11 Aug 2012 20:14:42 -0500
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Date: 2012-08-11T20:14:42-05:00
List-Id: <comp.lang.ada>


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.

Is there any kind of run-time switch to tell it to
check for this? I know I can always add logic myself to
check for this in the code, using rem() for example (which
might be the better solution actually) but I was just
wondering if there is a run-time switch for this.

thanks,
-Nasser