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Re: Float point issue

From: ZoltÃn KÃcsi <zoltan at bendor dot com dot au>
To: Robert Dewar <dewar at adacore dot com>
Cc: gcc at gcc dot gnu dot org
Date: Fri, 28 Oct 2011 15:35:03 +1100
Subject: Re: Float point issue
References: <20111028131705.62a2efa6@tade.bendor.com.au> <4EAA2202.6060808@adacore.com>

On Thu, 27 Oct 2011 23:31:14 -0400
Robert Dewar <dewar@adacore.com> wrote:

> > - I am missing a gcc flag
> 
> probably you should avoid extra precision and all the
> issues it brings, as well as speed up your program, by
> using SSE 64-bit arithmetic (using the appropriate gcc
> flags)

Indeed. -mpc64 fixes the issue and proper 53-bit rounding is applied.
Thanks a lot.

Zoltan

Follow-Ups:
- Re: Float point issue
  - From: Robert Dewar

References:
- Float point issue
  - From: ZoltÃn KÃcsi
- Re: Float point issue
  - From: Robert Dewar

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