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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/19619] LAPACK optimisation error
Date: Tue, 25 Jan 2005 04:09:00 -0000 [thread overview]
Message-ID: <20050125040912.15313.qmail@sourceware.org> (raw)
In-Reply-To: <20050125020659.19619.billingd@gcc.gnu.org>
------- 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
next prev parent reply other threads:[~2005-01-25 4:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-25 2:07 [Bug fortran/19619] New: " billingd at gcc dot gnu dot org
2005-01-25 3:37 ` [Bug fortran/19619] " billingd at gcc dot gnu dot org
2005-01-25 3:52 ` pinskia at gcc dot gnu dot org
2005-01-25 3:55 ` pinskia at gcc dot gnu dot org
2005-01-25 3:59 ` pinskia at gcc dot gnu dot org
2005-01-25 4:09 ` pinskia at gcc dot gnu dot org [this message]
2005-01-25 5:03 ` billingd at gcc dot gnu dot org
2005-03-02 3:56 ` billingd at gcc dot gnu dot org
2005-04-20 2:34 ` pinskia at gcc dot gnu dot org
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