From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.bugs Subject: bug#5916: XFLOAT_DATA and signed zeroes Date: Sat, 10 Apr 2010 11:20:33 -0400 Message-ID: References: <20100409233923.GT17637@prunille.vinc17.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1270913355 22397 80.91.229.12 (10 Apr 2010 15:29:15 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sat, 10 Apr 2010 15:29:15 +0000 (UTC) Cc: 5916@debbugs.gnu.org To: Vincent Lefevre Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Apr 10 17:29:13 2010 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1O0ccR-00032E-PZ for geb-bug-gnu-emacs@m.gmane.org; Sat, 10 Apr 2010 17:29:12 +0200 Original-Received: from localhost ([127.0.0.1]:39374 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O0ccR-00082m-86 for geb-bug-gnu-emacs@m.gmane.org; Sat, 10 Apr 2010 11:29:11 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1O0cc1-0007o6-M5 for bug-gnu-emacs@gnu.org; Sat, 10 Apr 2010 11:28:45 -0400 Original-Received: from [140.186.70.92] (port=44909 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O0cc0-0007nN-D1 for bug-gnu-emacs@gnu.org; Sat, 10 Apr 2010 11:28:45 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1O0cby-0008C1-UY for bug-gnu-emacs@gnu.org; Sat, 10 Apr 2010 11:28:44 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:33977) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1O0cby-0008Bv-Sr for bug-gnu-emacs@gnu.org; Sat, 10 Apr 2010 11:28:42 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1O0cUX-0001LU-QT; Sat, 10 Apr 2010 11:21:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-To: owner@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 10 Apr 2010 15:21:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 5916 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 5916-submit@debbugs.gnu.org id=B5916.12709128385160 (code B ref 5916); Sat, 10 Apr 2010 15:21:01 +0000 Original-Received: (at 5916) by debbugs.gnu.org; 10 Apr 2010 15:20:38 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1O0cUA-0001LB-Gq for submit@debbugs.gnu.org; Sat, 10 Apr 2010 11:20:38 -0400 Original-Received: from ironport2-out.teksavvy.com ([206.248.154.183] helo=ironport2-out.pppoe.ca) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1O0cU8-0001L6-Jq for 5916@debbugs.gnu.org; Sat, 10 Apr 2010 11:20:37 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvsEAHY0wEtMCqWu/2dsb2JhbACbQ3K5aIUMBItG X-IronPort-AV: E=Sophos;i="4.52,182,1270440000"; d="scan'208";a="60590800" Original-Received: from 76-10-165-174.dsl.teksavvy.com (HELO pastel.home) ([76.10.165.174]) by ironport2-out.pppoe.ca with ESMTP; 10 Apr 2010 11:20:34 -0400 Original-Received: by pastel.home (Postfix, from userid 20848) id BD0C57F1B; Sat, 10 Apr 2010 11:20:33 -0400 (EDT) In-Reply-To: <20100409233923.GT17637@prunille.vinc17.org> (Vincent Lefevre's message of "Sat, 10 Apr 2010 01:39:23 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Sat, 10 Apr 2010 11:21:01 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:36156 Archived-At: > lisp.h (XFLOAT_DATA): Produce an rvalue by adding 0 to the value. > However, adding 0 has another side effect on floats: the 0 is > converted into +0.0 (due to the addition with a double), so that > a -0.0 is transformed into a +0.0. I guess we could/should make this "+0" conditional on some debugging option, since after all it's only needed to catch coding errors. Stefan