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From: jsa@alexandria (Jon S Anthony)
Subject: Re: Ada95 to ANSI_C converter
Date: 1997/04/04
Date: 1997-04-04T00:00:00+00:00	[thread overview]
Message-ID: <JSA.97Apr4180757@alexandria> (raw)
In-Reply-To: JSA.97Mar28134228@alexandria


In article <dewar.860114168@merv> dewar@merv.cs.nyu.edu (Robert Dewar) writes:

> Jon said
> 
> <<Robert, you should read a little more carefully.  Please.  The comment
> above is in response to one of Bob's about how the ICC implementation
> _avoided_ inefficiency here.  Now, I don't know for a fact that Bob's
> comment is accurate (that the ICC implementation was _not_ inefficent
> here), but I assumed it was when I asked this question.  So, the
> proper response here should be either:>>
> 
> Nope, that's not what Bob said, he said that ICC used some implementation
> dependent tricks -- that's true! Not that they avoided inefficiencies.
> Reread Bob's post, you will see that you invented the word avoid (you
> just read that into it, but it is not what he said!!)

From DejaNews:

--------------
Subject:      Re: Ada95 to ANSI_C converter
From:         bobduff@world.std.com (Robert A Duff)
Date:         1997/04/01
Message-Id:   <E7xots.51o@world.std.com>
Newsgroups:   comp.lang.ada,comp.lang.c
[More Headers]

In article <JSA.97Mar31144058@alexandria>,
Jon S Anthony <jsa@alexandria> wrote:
>Hmmm, _fundamentally_ inefficient?  I'm not confinced.  Of course, it
>definitely will be completely unreadable.

Robert is probably alluding to the fact that C doesn't catch overflows.
Of course, one could imagine a translator that assumed the Ada program
isn't bothered by overflows...

>Well, wasn't it ICC that marketed such a thing for real work?  I'm not
>sure they'd agree with you.  In fact, I recall yourself claiming that
>there was nothing "fundamentally" wrong with the approach.

I believe ICC used various implementation-dependent tricks to catch
overflows efficiently.  And they didn't claim to produce readable C --
*********************
          ***********
just correct C.

-------------------------

Emphasis mine.  I read "to catch overflows efficiently" as being
interchangeable with "to avoid inefficiencies in catching overflows".
I think Bob has already agreed with this, but that he meant to also
say he didn't really know for sure if it worked.

/Jon
-- 
Jon Anthony
Organon Motives, Inc.
Belmont, MA 02178
617.484.3383
jsa@organon.com





  parent reply	other threads:[~1997-04-04  0:00 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <5hbrah$ctt$1@gail.ripco.com>
1997-03-26  0:00 ` Ada95 to ANSI_C converter Nick Roberts
1997-03-26  0:00   ` Robert Dewar
1997-03-27  0:00     ` Jennifer E. Lee
1997-03-28  0:00       ` Craig Franck
1997-03-28  0:00         ` Robert Dewar
1997-03-28  0:00     ` Steve Doiel
1997-03-28  0:00       ` Robert Dewar
1997-04-02  0:00         ` Richard Kenner
1997-04-02  0:00           ` Robert Dewar
1997-04-02  0:00             ` Richard Kenner
1997-04-02  0:00               ` Robert Dewar
1997-04-02  0:00             ` Robert A Duff
1997-04-04  0:00               ` Keith Thompson
1997-04-04  0:00                 ` Robert Dewar
1997-04-07  0:00                   ` Arthur Schwarz
1997-04-07  0:00                     ` Peter Seebach
1997-04-07  0:00                       ` Kaz Kylheku
1997-04-07  0:00                     ` Robert Dewar
1997-04-08  0:00                       ` Robert A Duff
1997-04-08  0:00                   ` Keith Thompson
1997-04-02  0:00       ` Richard Kenner
1997-04-03  0:00         ` Fergus Henderson
1997-03-27  0:00   ` Craig Franck
1997-03-27  0:00     ` Jennifer E. Lee
1997-03-27  0:00   ` Jennifer E. Lee
1997-03-27  0:00     ` Philip Johnson
1997-04-01  0:00       ` Jennifer E. Lee
1997-04-02  0:00         ` Philip E. Johnson
1997-04-03  0:00       ` Jon S Anthony
1997-03-28  0:00     ` Robert Dewar
1997-03-28  0:00       ` Craig Franck
1997-03-28  0:00         ` Robert Dewar
1997-04-01  0:00     ` Tom Wheeley
1997-04-01  0:00     ` David Kristola
1997-04-01  0:00       ` Jennifer E. Lee
1997-04-01  0:00   ` Robert I. Eachus
1997-03-27  0:00 ` Jeff Carter
1997-03-28  0:00 ` Jon S Anthony
1997-03-28  0:00   ` Robert Dewar
1997-04-02  0:00   ` Jon S Anthony
1997-04-03  0:00     ` Robert Dewar
1997-04-04  0:00     ` Jon S Anthony
1997-04-03  0:00   ` Jon S Anthony
1997-04-03  0:00     ` Robert A Duff
1997-04-03  0:00       ` Robert Dewar
1997-04-03  0:00     ` Robert Dewar
1997-04-04  0:00   ` Jon S Anthony [this message]
1997-04-04  0:00     ` Robert Dewar
1997-04-04  0:00     ` Robert Dewar
1997-04-07  0:00   ` Jon S Anthony
1997-04-07  0:00   ` Jon S Anthony
1997-03-28  0:00 ` Jon S Anthony
1997-03-31  0:00 ` Jon S Anthony
1997-03-31  0:00   ` Robert Dewar
1997-04-01  0:00   ` Robert A Duff
1997-03-31  0:00 ` David Emery
1997-04-03  0:00 ` Jon S Anthony
1997-04-03  0:00   ` Jennifer E. Lee
1997-04-04  0:00 ` Howard W. LUDWIG
1997-04-16  0:00 Dan Lehman
1997-04-17  0:00 ` Robert Dewar
1997-04-20  0:00   ` Nick Roberts
1997-04-20  0:00     ` Robert Dewar
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