[Cfp-interest 1937] Re: Errata for IEEE 754-2019

[Fred J. Tydeman]

On Thu, 11 Feb 2021 11:51:38 -0000 Mike Cowlishaw wrote:
>
> 
>Sorry for taking so long to get around to this, but here:
>
>  http://speleotrove.com/misc/IEEE754-errata-2019.html
>
>is a first attempt at the new errata page.  This is a private URL at present
>(i.e., not linked from anywhere else).

Another issue:

While the values of these expressions are well defined (to be 1), the
preferred quantum exponent is not well defined (because it is zero*infinity).

pow(1,infinity)
pow(infinity,0)
pown(infinity,0)

Perhaps something along the lines of:

  A finite result from a NaN or infinity operand has a
  preferred quantum exponent of 0.

should be added to 9.2.2.Preferred exponents
That also covers the cases that involve Q(NAN)

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