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Dan Zuras wrote in reply to Arnold Neumaier's ### question:
> If you are asking if installing a new rounding
> mode would invalidate a currently conforming
> 754 implementation, my personal opinion is no,
> it would not.

I agree.  Indeed, IBM supports 8 rounding modes (three
more than the five 754-2008 defines) for DFP (on P and Z),
and two more for BFP (on Z).

Michel.
---Sent: 2010-10-05 16:59:37 UTC