[Cfp-interest] Three round nearest modes and FLT_ROUNDS

Fred J. Tydeman tydeman at tybor.com
Tue Oct 23 15:46:23 PDT 2018


On Tue, 23 Oct 2018 18:19:46 -0400 Ian McIntosh wrote:
>
>If you wanted to implement augmented operations in software, would you want access to the roundTiesToZero rounding mode?

I assume that if that there is no hardware augmented operations, 
then there is no hardware roundTiesToZero rounding mode.
(as is true for existing hardware (as far as I know)).

If I had access to hardware roundTiesToZero rounding mode, 
then that makes a software implementation of the augmented
operations easy.

So, yes, I would like access to roundTiesToZero rounding mode.
But, I do not expect it to be there.

---
Fred J. Tydeman        Tydeman Consulting
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+1 (702) 608-6093      Vice-chair of PL22.11 (ANSI "C")
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