Re: optimization/7175: Calculation yields different results for version optimized with -O2

[Gunther H Weber <weber@informatik.uni-kl.de>]

The following reply was made to PR optimization/7175; it has been noted by GNATS.

From: Gunther H Weber <weber@informatik.uni-kl.de>
To: bangerth@dealii.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
   nobody@gcc.gnu.org, weber@informatik.uni-kl.de, gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: optimization/7175: Calculation yields different results for version
 optimized with -O2
Date: Mon, 09 Dec 2002 20:13:39 -0800

 I still get the problem with gcc3.2. However, it disappears as soon as I 
 use -ffloat-store. So it seems to be due to poor handling of numerical 
 inaccuracies.
 
 Thank you for your feedback
    Gunther
 
 bangerth@dealii.org wrote:
 
 >Synopsis: Calculation yields different results for version optimized with -O2
 >
 >State-Changed-From-To: open->feedback
 >State-Changed-By: bangerth
 >State-Changed-When: Fri Dec  6 13:50:40 2002
 >State-Changed-Why:
 >    This code works for me with gcc3.2. Would you mind checking
 >    whether this helps on your system as well?
 >    
 >    Thanks
 >      Wolfgang
 >
 >http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7175
 >  
 >