critical floating point incompatibility

Peter Jeremy peterjeremy at optushome.com.au
Thu Dec 20 01:39:53 PST 2007


On Wed, Dec 19, 2007 at 09:40:34PM -0800, Carl Shapiro wrote:
>The default setting of the x87 floating point control word on the i386
>port is 0x127F.  Among other things, this value sets the precision
>control to double precision.  The default setting of the x87 floating
>point control word on the AMD64 is 0x37F.
...
>It seems clear that the right thing to do is to set the floating point
>environment to the i386 default for i386 binaries.  Is the current
>behavior intended?

I believe this is an oversight.  See the thread beginning
http://lists.freebsd.org/pipermail/freebsd-stable/2007-November/037947.html

-- 
Peter Jeremy
Please excuse any delays as the result of my ISP's inability to implement
an MTA that is either RFC2821-compliant or matches their claimed behaviour.
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