From owner-freebsd-arch  Fri Jan 11 12:53:16 2002
Delivered-To: freebsd-arch@freebsd.org
Received: from albatross.prod.itd.earthlink.net (albatross.mail.pas.earthlink.net [207.217.120.120])
	by hub.freebsd.org (Postfix) with ESMTP id 75A3937B405
	for <arch@freebsd.org>; Fri, 11 Jan 2002 12:53:13 -0800 (PST)
Received: from pool0189.cvx21-bradley.dialup.earthlink.net ([209.179.192.189] helo=mindspring.com)
	by albatross.prod.itd.earthlink.net with esmtp (Exim 3.33 #1)
	id 16P8ff-0002yr-00; Fri, 11 Jan 2002 12:53:03 -0800
Message-ID: <3C3F50AC.D8187873@mindspring.com>
Date: Fri, 11 Jan 2002 12:53:00 -0800
From: Terry Lambert <tlambert2@mindspring.com>
X-Mailer: Mozilla 4.7 [en]C-CCK-MCD {Sony}  (Win98; U)
X-Accept-Language: en
MIME-Version: 1.0
To: Nate Williams <nate@yogotech.com>
Cc: Alfred Perlstein <bright@mu.org>, Bruce Evans <bde@zeta.org.au>,
	Daniel Eischen <eischen@pcnet1.pcnet.com>,
	Dan Eischen <eischen@vigrid.com>, Peter Wemm <peter@wemm.org>,
	Archie Cobbs <archie@dellroad.org>, arch@FreeBSD.ORG
Subject: Re: Request for review: getcontext, setcontext, etc
References: <20020112054041.J3330-100000@gamplex.bde.org>
		<3C3F455B.86856045@mindspring.com>
		<15423.17965.472722.218250@caddis.yogotech.com>
		<20020111122109.J7984@elvis.mu.org> <15423.18986.412590.932780@caddis.yogotech.com>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-arch@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-arch.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-arch>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-arch>
X-Loop: FreeBSD.ORG

Nate Williams wrote:
> > Shouldn't you be able to catch divide by zero?  Or am I missing
> > something here?
> 
> I don't know what Bruce is saying anymore.  I do know that a DIVBYZERO
> exception is no longer generated (by default).  Whether or not it can be
> correctly generated/caught is another story.

I think we were IEEE-ified to death, by use of the Linux
interpretation of the default masks, which are less useful
than the FreeBSD (past) version.

I think that a divide by zero ends up yielding NaN now,
instead of an exception.

-- Terry

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-arch" in the body of the message