From: robfi680@gmail.com   
      
   On 2025-11-03 2:03 p.m., MitchAlsup wrote:   
   >   
   > Thomas Koenig  posted:   
   >   
   >> MitchAlsup  schrieb:   
   >>>   
   >>> Terje Mathisen  posted:   
   >>   
   >>>> Actually, for the five required basic operations, you can always do the   
   >>>> op in the next higher precision, then round again down to the target,   
   >>>> and get exactly the same result.   
   >>>   
   >>> https://guillaume.melquiond.fr/doc/05-imacs17_1-article.pdf   
   >>   
   >> The PowerISA version 3.0 introduced rounding to odd for its 128-bit   
   >> floating point arithmetic, for that very reason (I assume).   
   >   
   > Likely, My 66000 also has RNO and   
   > Round Nearest Random is defined but not yet available   
   > Round Away from Zero is also defined and available.   
      
   Round nearest random? How about round externally guided (RXG) by an   
   input signal? For instance, the rounding could come from a feedback   
   filter of some sort.   
      
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