Date: Thu, 6 Mar 2008 01:37:46 -0500 From: David Schultz <das@FreeBSD.ORG> To: Peter Jeremy <peterjeremy@optushome.com.au> Cc: cvs-src@FreeBSD.ORG, src-committers@FreeBSD.ORG, Bruce Evans <bde@FreeBSD.ORG>, Colin Percival <cperciva@FreeBSD.ORG>, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/i386/include _types.h Message-ID: <20080306063746.GC48339@zim.MIT.EDU> In-Reply-To: <20080306062301.GX68971@server.vk2pj.dyndns.org> References: <200803051121.m25BLE03035426@repoman.freebsd.org> <20080305182531.GS68971@server.vk2pj.dyndns.org> <20080306021222.GA46783@zim.MIT.EDU> <47CF5D19.3090100@freebsd.org> <20080306033246.GA47280@zim.MIT.EDU> <20080306062301.GX68971@server.vk2pj.dyndns.org>
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On Thu, Mar 06, 2008, Peter Jeremy wrote: > On Wed, Mar 05, 2008 at 10:32:46PM -0500, David Schultz wrote: > >gcc doesn't get any of this right. FreeBSD/i386 fixes the problem > >for /doubles/ by setting the i387 to use 53-bit precision. > > Note that FreeBSD/amd64 does not do this when running i386 binaries > so you can get discrepancies between running the same program natively > vs running it in compatibility mode. Good point. I don't think i386 ever got fixed to do the appropriate mode change for Linux binaries, either, BTW.
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