[Cfp-interest 2005] WG14 IEEE 754-C binding meeting minutes 2021/05/19

[Fred J. Tydeman]

Notes on 2021/05/19 CFP meeting by Fred Tydeman.

Attendees: Jim Thomas, Fred Tydeman, Ian McIntosh, Mike Cowlishaw,
Damian McGuckin, David Hough, Ivan Kosarev

New agenda items:
  None.

Next meeting:
  June 23 (week after next WG14 meeting).

C++ liaison
  None.

IEEE-754 errata (maintained by Mike Cowlishaw) 
  Updated based upon feedback from Fred.  
AI: Mike:  Will be sent IEEE-754 email list.

C23 integration
  No changes.

Action items from 2021-04-13 meeting

Mailman attachments [CFP 1996]: CFP email list has turned off
filtering of attachments.  David: Number of people on the CFP list: 24

AI: Fred: WG14 N2714  Add "a" before "NaN" in last bullet.

Default static init [CFP 1990]:  rewrite as:
zero, and if it has DFP type, the quantum exponent is implementation defined;
(not sure about "quantum" here)
(look at C std to see if bullet list ends in ; not .)
AI: Fred:  Do changes, and submit to WG14.

cr_ prefix [CFP 1967] N2715: Submitted to WG14.  Make sure last sentence
of paragraph is kept when discuss with WG14.

Range error AIs for Jim.

"Normal" in C:  C uses "normalized".

Range errors issue 1:  Change "below" in footnote to "In this subclause".
AI: Jim: Do that change and submit to WG14.

[CFP 1997]: Range error is union of overflow and underflow.
Overflow:  "ordinary accuracy" not defined, but OK.
Underflow: exact minimum normal is underflow.  Seems wrong.  But no
better wording.
AI: Jim Submit to WG14.

Annex F: binary(fuzzy) vs decimal(well defined) on underflow.  Be
vague in C and refer to 754.  So, words are OK.
AI: Jim: Submit to WG14.

Footnote 403: Is "must" OK?  
AI: Jim:  Reword footnote 403.  Submit to WG14.

feraiseexcept:  traps and alternate exceptions.
AI: Jim: Fix wording and submit to WG14.

Annex F binding: CFP 1998, CFP 2002 
Add 'however' to F.3
AI: Jim: Redo 7.31.8 reference:  Reserves cr_ prefix names for ...

Next steps: Templates for function names.  Waiting for response from
JeanHeyd.
AI: Rajan: Should post to list results of discussion of next steps
w.r.t. shorthand for functions in C standard.

CFP 1934:  No one looked

Other issues

[CFP 1991]: WG14 N2642.  "observation" is weird.  Breakup in two sentence.
Finite result is implementation defined - footnote: not specific in 754,
but a possible definition is 0.
AI: Jim, David, Fred: Rework and resubmit to WG14.

Others?
  None.


---
Fred J. Tydeman        Tydeman Consulting
tydeman at tybor.com      Testing, numerics, programming
+1 (702) 608-6093      Vice-chair of PL22.11 (ANSI "C")
Sample C99+FPCE tests: http://www.tybor.com
Savers sleep well, investors eat well, spenders work forever.