From: quadibloc@invalid.invalid   
      
   On Mon, 10 Nov 2025 06:59:19 +0000, Thomas Koenig wrote:   
      
   > There is a clear use case for roundTiesToOdd (correctly rounding   
   > calculations for later conversion to a lower precision), this is why   
   > Power implements it for its 128-bit HW.   
      
   I see that what IEEE 754 does have is round to nearest with ties to even;   
   allegedly, according to the Wikipedia article, this is the recommended   
   option. There is also a round to nearest with ties to "away", that is, to   
   the larger magnitude; this is provided as an option for decimal arithmetic   
   only.   
      
   If rounding ties to odd makes conversion to a lower precision more likely   
   to be correct, I'm surprised that it isn't the preferred option. But I   
   think I'd have to learn more about numerical analysis to make an   
   intelligent comment on this matter.   
      
   John Savard   
      
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