Date: Sat, 14 Jul 2001 17:50:02 -0700 (PDT) From: Jim Pirzyk <Jim.Pirzyk@disney.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/28966: math libraries in linux emulation do not return same results Message-ID: <200107150050.f6F0o1Y07824@freefall.freebsd.org>
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The following reply was made to PR kern/28966; it has been noted by GNATS.
From: Jim Pirzyk <Jim.Pirzyk@disney.com>
To: FreeBSD-gnats-submit@FreeBSD.ORG
Cc:
Subject: Re: kern/28966: math libraries in linux emulation do not return same results
Date: Sat, 14 Jul 2001 17:47:34 -0700
On Saturday 14 July 2001 04:30 pm, Jim Pirzyk wrote:
> The following reply was made to PR kern/28966; it has been noted by GNATS.
>
> From: Jim Pirzyk <Jim.Pirzyk@disney.com>
> To: FreeBSD-gnats-submit@FreeBSD.ORG
> Cc:
> Subject: Re: kern/28966: math libraries in linux emulation do not return
> same results Date: Sat, 14 Jul 2001 16:21:05 -0700
>
> > >Description:
> >
> > Math libraries under linux emulation do not return the same results
> > as under native FreeBSD nor under native Linux. This is independant
> > of shared libaries (they are the same under Linux emulation as under
> > native linux).
>
> What I am finding is that the -OX (where X is not 0) optimizes the
> exp() call out of the binary, so it does not call exp() in libm.so.6
> This does not happen under FreeBSD's gcc compiler.
This is only when I include the exp call in a seperate .o file, not
when I use the one in libm.so.6
So the problem stands that using exp() on a linux box works different
than it does under linux emulation.
- JimP
--
--- @(#) $Id: dot.signature,v 1.10 2001/05/17 23:38:49 Jim.Pirzyk Exp $
__o Jim.Pirzyk@disney.com ------------- pirzyk@freebsd.org
_'\<,_ Senior Systems Engineer, Walt Disney Feature Animation
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