From owner-cvs-all@FreeBSD.ORG  Thu Mar  6 05:13:36 2008
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 5570C1065672
	for <cvs-all@FreeBSD.org>; Thu,  6 Mar 2008 05:13:36 +0000 (UTC)
	(envelope-from silby@silby.com)
Received: from relay02.pair.com (relay02.pair.com [209.68.5.16])
	by mx1.freebsd.org (Postfix) with SMTP id E0C368FC1C
	for <cvs-all@FreeBSD.org>; Thu,  6 Mar 2008 05:13:35 +0000 (UTC)
	(envelope-from silby@silby.com)
Received: (qmail 3747 invoked from network); 6 Mar 2008 05:13:34 -0000
Received: from unknown (HELO localhost) (unknown)
	by unknown with SMTP; 6 Mar 2008 05:13:34 -0000
X-pair-Authenticated: 209.68.2.70
Date: Wed, 5 Mar 2008 23:13:33 -0600 (CST)
From: Mike Silbersack <silby@silby.com>
To: Bruce Evans <bde@FreeBSD.org>
In-Reply-To: <200803051121.m25BLE03035426@repoman.freebsd.org>
Message-ID: <20080305230954.X55190@odysseus.silby.com>
References: <200803051121.m25BLE03035426@repoman.freebsd.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/i386/include _types.h
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 06 Mar 2008 05:13:36 -0000


On Wed, 5 Mar 2008, Bruce Evans wrote:

> bde         2008-03-05 11:21:14 UTC
>
>  FreeBSD src repository
>
>  Modified files:
>    sys/i386/include     _types.h
>  Log:
>  Change float_t and double_t to long double on i386.  All floating point

For those of us who are not floating point experts, can you explain a few 
things?

1)  Does this really change every double to a long double in anything 
compiled?
2)  How does this affect ABI compatibility?
3)  How does this change the operation of various programs in the ports 
tree that use floating point, such as mplayer, mpg123, etc.  Will this 
cause different behavior when these apps are used on FreeBSD vs other 
operating systems?

As I've said in the past, I'd really, really, really like to see 
regression tests for any change to the floating point functions.  The 
types of changes you've been making are not easy to verify just by looking 
at diffs.

Thanks,

-Mike