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Re: optimization/7175: Calculation yields different results for version optimized with -O2
- From: bangerth at dealii dot org
- To: gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, weber at informatik dot uni-kl dot de
- Date: 10 Dec 2002 14:28:25 -0000
- Subject: Re: optimization/7175: Calculation yields different results for version optimized with -O2
- Reply-to: bangerth at dealii dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, weber at informatik dot uni-kl dot de, gcc-gnats at gcc dot gnu dot org
Synopsis: Calculation yields different results for version optimized with -O2
State-Changed-From-To: feedback->closed
State-Changed-By: bangerth
State-Changed-When: Tue Dec 10 06:28:23 2002
State-Changed-Why:
Then this is not a problem of handling inaccuracies, but of
handling excess accuracy due to the idiotic x87 floating
point representation. Read the section on non-bugs on the
gcc homepage for a description.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7175