[cfp-interest 3709] Re: compoundn(0,n)

[Damian McGuckin]

On Sat, 8 Nov 2025, Fred J. Tydeman wrote:

> On Fri, 7 Nov 2025 07:35:32 -0800 Jim Thomas wrote:
>>
>> This case is specified explicitly in ISO/IEC 60559, and Annex F does 
>> include similar cases, e.g.  exp(+/-0) is 1.
>>
>> Are there other such cases?
>>
>> Are there exact cases not mentioned in ISO/IEC 60559 because the 
>> exactness is implied by correct rounding that should be added to F.10?
>
> pow(x,1) is exactly x
> scalbn(x,0) is exactly x     [and scalbln and ldexp]

Should I add these to the Annex F changes or are these normative?

Please ensure that new wording in F.10.1#16 the recent Wiki posting about 
"correct rounding", or more precisely, correctly rounded results, still 
holds.

         https://wiki.edg.com/pub/CFP/WebHome/C2Y-F-10-1-Only-20251015.pdf

Thanks - Damian