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Date:      Wed, 5 Jul 2000 18:22:19 +0200 (EET)
From:      Narvi <narvi@haldjas.folklore.ee>
To:        Steve Kargl <sgk@troutmask.apl.washington.edu>
Cc:        Daniel Eischen <eischen@vigrid.com>, freebsd-hackers@FreeBSD.ORG
Subject:   Re: Default (x86) floating point precision
Message-ID:  <Pine.BSF.3.96.1000705181921.45558E-100000@haldjas.folklore.ee>
In-Reply-To: <200006271525.IAA59630@troutmask.apl.washington.edu>

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On Tue, 27 Jun 2000, Steve Kargl wrote:

> Daniel Eischen wrote:
> > 
> > Oddly, this causes problems with GNAT (Ada is a high level language)
> > because it wants/expects 64-bit extended precision.  It seems as if
> > GNAT for linux-i386 also uses 64-bit extended precision.  The only
> > other GNAT i386 platform that doesn't use 64-bit precision is NT.
> > 
> > So is the above comment still valid?
> > 
> 
> Does GNAT use the math library in /usr/lib?  I've been testing
> our math library against UCBTEST, and there appear to be some
> pecularities.  I need to dig deeper to understand all the info
> produced by UCBTEST.  The point of this note is that turning on
> 64-bit extended precision in GNAT might be compromised by libm.a.
> 

Well, some things can easily depend on there being no double rounding to
get the correct results. 

> -- 
> Steve
> 



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