From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15330 invoked by alias); 25 Jan 2005 04:09:16 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 15315 invoked by uid 48); 25 Jan 2005 04:09:12 -0000 Date: Tue, 25 Jan 2005 04:09:00 -0000 Message-ID: <20050125040912.15313.qmail@sourceware.org> From: "pinskia at gcc dot gnu dot org" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20050125020659.19619.billingd@gcc.gnu.org> References: <20050125020659.19619.billingd@gcc.gnu.org> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug fortran/19619] LAPACK optimisation error X-Bugzilla-Reason: CC X-SW-Source: 2005-01/txt/msg03639.txt.bz2 List-Id: ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-01-25 04:09 ------- The quotes from that email really makes it sound like this "bug". "The failures depend on the optimisation level on file chgeqz.f, independent of the optimisation used on the rest of LAPACK, and start at -O2 I then isolated and analysed a failure on a 2x2 matrix. For this case the failure is due to a change of order 1.0e-16 in a quantity of order 1.0e-8, at the level of round off for single precision floating point. " -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19619