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Re: GCC beaten by ICC in stupid trig test!

From: Robert Dewar <dewar at gnat dot com>
To: Gabriel Dos Reis <gdr at integrable-solutions dot net>
Cc: Toon Moene <toon at moene dot indiv dot nluug dot nl>,Joe Buck <Joe dot Buck at synopsys dot COM>,Bradley Lucier <lucier at math dot purdue dot edu>, roger at eyesopen dot com,gcc at gcc dot gnu dot org, abraham at dina dot kvl dot dk, gcc-patches at gcc dot gnu dot org,laurent at guerby dot net, fjahanian at apple dot com
Date: Thu, 25 Mar 2004 00:55:58 -0500
Subject: Re: GCC beaten by ICC in stupid trig test!
References: <13661448-7DC0-11D8-817F-000A958F150A@math.purdue.edu> <20040324105146.A1279@synopsys.com> <EDB6EC7E-7DC4-11D8-817F-000A958F150A@math.purdue.edu> <20040324110433.A2050@synopsys.com> <4061F6EF.3090803@moene.indiv.nluug.nl> <m3brml7qj6.fsf@uniton.integrable-solutions.net>

Gabriel Dos Reis wrote:

The C++ standard clearly says that re-association is permitted only if
the re-associated expression gives the same result as the original.
So A+B+C really is (A+B)+C.


In Ada, the rule is a little more liberal, the reassociation is allowed
if the result is in the same model interval. In practice though, either
criterion forbids the reassocation.

References:
- Re: GCC beaten by ICC in stupid trig test!
  - From: Bradley Lucier
- Re: GCC beaten by ICC in stupid trig test!
  - From: Joe Buck
- Re: GCC beaten by ICC in stupid trig test!
  - From: Bradley Lucier
- Re: GCC beaten by ICC in stupid trig test!
  - From: Joe Buck
- Re: GCC beaten by ICC in stupid trig test!
  - From: Toon Moene
- Re: GCC beaten by ICC in stupid trig test!
  - From: Gabriel Dos Reis

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