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=ham autolearn_force=no version=3.4.4
X-Google-Thread: a07f3367d7,6a8952cbe009f3ed
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII-7-bit
X-Received: by 10.224.175.65 with SMTP id w1mr10985001qaz.7.1359959035299;
        Sun, 03 Feb 2013 22:23:55 -0800 (PST)
X-Received: by 10.49.62.2 with SMTP id u2mr1622787qer.38.1359959035279; Sun,
 03 Feb 2013 22:23:55 -0800 (PST)
Path: 
 k2ni4456qap.0!nntp.google.com!p13no8759974qai.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Sun, 3 Feb 2013 22:23:55 -0800 (PST)
In-Reply-To: <753a3719-e15f-4626-b3cc-ac76f7ef7499@googlegroups.com>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=130.240.232.139;
 posting-account=Rr9I-QoAAACS-nOzpA-mGxtAlZ46Nb6I
NNTP-Posting-Host: 130.240.232.139
References: <db7b4d36-6c49-4501-954e-68ecc55c3d32@googlegroups.com>
 <4905b963-0036-4129-8050-fb26ef0154d6@googlegroups.com>
 <32314026-23ae-45b8-a4c5-e589e7d79de2@googlegroups.com>
 <kdttga$83d$3@dont-email.me>
 <64e3c342-d042-40a2-8a16-b1f0cdff9f16@googlegroups.com>
 <91527f7c-0679-4c21-95c7-a07f3fff265d@googlegroups.com>
 <8cc51443-23f6-4736-a862-d0223998fc2e@googlegroups.com>
 <b9aea316-4b79-41ce-987e-746432945e22@googlegroups.com>
 <753a3719-e15f-4626-b3cc-ac76f7ef7499@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <8ee504a6-b371-42ef-a91e-bbb70e3b81d8@googlegroups.com>
Subject: Re: Numerical calculations: Why not use fixed point types for
 everything?
From: Ada novice <shai.lesh@gmx.com>
Injection-Date: Mon, 04 Feb 2013 06:23:55 +0000
Content-Type: text/plain; charset=ISO-8859-1
Date: 2013-02-03T22:23:55-08:00
List-Id: <comp.lang.ada>

On Sunday, February 3, 2013 5:05:22 AM UTC+1, Shark8 wrote:
> 
> 
>     Type P is delta 0.1 digits 3 range 0.0..10.0;
> 
>     
> 
>     declare
> 
> 	Index : P := P'First;
> 
>     begin
> 
> 	loop
> 
> 	    Ada.Text_IO.Put_Line( Index'Img );
> 
> 	    Exit when Index = P'Last;
> 
> 	    Index:= P'Succ(Index);
> 
> 	End loop;
> 
>     end;
> 

I was working an example based on the working code you gave:

with Ada.Text_IO;
with Ada.Long_Float_Text_IO;

procedure Test is

type P is delta 0.1 digits 3 range 0.0..10.0;

        Index: P := P'First;
        Number   : Long_Float := 100.0;


   begin
      loop
         Ada.Text_IO.Put(Index'Img);Ada.Text_IO.Put("  ");

         Ada.Long_Float_Text_IO.Put (Item => Long_Float(Index)*Number, Fore => 3, Aft  => 3, Exp  => 0);Ada.Text_IO.Put("  ");

         --Number := Long_Float(Index)*Number;
         Ada.Long_Float_Text_IO.Put (Item => Number, Fore => 3, Aft  => 3, Exp  => 0);

         Ada.Text_IO.New_Line;

         exit when Index = P'Last;

         Index := P'Succ(Index);


      end loop;

end Test;


On running I get:

 0.0    0.000  100.000
 0.1   10.000  100.000
 0.2   20.000  100.000
 0.3   30.000  100.000
 0.4   40.000  100.000
 0.5   50.000  100.000
... and so on

which is expected.

Now, when I un-comment the line 

--Number := Long_Float(Index)*Number;

and run the code again, I get:

 0.0    0.000    0.000
 0.1    0.000    0.000
 0.2    0.000    0.000
 0.3    0.000    0.000
 0.4    0.000    0.000
 0.5    0.000    0.000

... and so on.

This is a weird behaviour. Why are the second and third columns all zeros now?

Thanks.
YC