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Re: Excess precision problem on IA-64

From: Eric Botcazou <ebotcazou at adacore dot com>
To: Geert Bosch <bosch at adacore dot com>
Cc: Andrew Pinski <pinskia at physics dot uc dot edu>, gcc at gcc dot gnu dot org
Date: Thu, 27 Oct 2005 21:21:13 +0200
Subject: Re: Excess precision problem on IA-64
References: <200510271751.j9RHppOd012284@earth.phy.uc.edu> <200510272012.16194.ebotcazou@adacore.com> <4E7B8AEB-26DF-4017-BCF2-92A4B8EAB9DC@adacore.com>

> Fused multiply-add always uses "infinite precision" in the intermediate
> result. Only a single rounding is performed at the end.

Of course, but I was implicitly referring to the 82-bit thing.  But it seems I 
was wrong, as the testcase fails on PowerPC w/ -mfused-madd too.

-- 
Eric Botcazou

References:
- Re: Excess precision problem on IA-64
  - From: Andrew Pinski
- Re: Excess precision problem on IA-64
  - From: Eric Botcazou
- Re: Excess precision problem on IA-64
  - From: Geert Bosch

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