[Cfp-interest] Summary of C FP issues so far

[Rajan Bhakta]

Hello,

Here is a summary of all the decisions reached in WG14 regarding the 
floating point study group topics of interest to date. The major items are 
that we need to provide updated Parts 1 and 2 containing all closed 
defects (as of this WG14 meeting, all changed status given below) to the 
WG14 editors, and to create a new version of Part 3 that is a 
conditionally normative annex (if we want Part 3 to be a part of C2X) as a 
separate proposal.

Action items:
  - Give all (CR/DR) changes integrated into the Floating Point TS’s by 
the end of this meeting to the WG14 editors for Parts 1 and 2. Subsequent 
changes will be based on the C2X working draft.

TS CR's:
    DR17: Move to closed.
    DR18: Move to closed.
    DR19: Move to closed.
    DR13: See N2252. Move to review.
    DR16: Move to review.
    DR20: See N2254. Move to review.
    DR21: See N2283. Move to review.
    DR22: See N2255. Move to review.

For proposed CR/DR's:
P2 CR for llquantep invalid case [N 2262]
  CR23. Move to review.
P1 CR for remainder NaN case [N 2272]
  CR24. Move to review.
P1 CR for totalorder parameters [N 2292]
  CR25. Move to review. The change will be reflected in C2X.
  Note: Jens, Blaine, Aaron, Martin: Prefer Built In Functions. The issue 
is taking the address of the function.

For the C defects:
Move to DR501 into review after incorporating N2253.

For the C2X Proposals:
  Parts 1 and 2 will go in. Note that as per above, the plan is for our 
group to incorporate all changes from closed DR/CR's to the point of the 
end of this WG14 meeting into working drafts of the TS parts 1 and 2 and 
give that to Jens and Larry for incorporation into a working draft of C2X.
    Part 3: New types
      Looking for the floating point study group to turn this into a 
conditionally normative annex (new proposal).
    Part 4: Mathematical functions:
      No consensus to add this to the working draft of C2X.
    Part 4: Reduction functions:
      No consensus to add this to the working draft of C2X.
    Part 5: Evaluation format pragmas:
      No consensus to add this to the working draft of C2X.
    Part 5: Optimization control pragmas
      No consensus to add this to the working draft of C2X.
    Part 5: Reproducible results
      Not looking for the FP study group to rework this without 
optimization pragma.
      No consensus to add this to the working draft of C2X.
    Rounding direction macro: Passed (Will be in C2X)
    N2123: Alternate exception handling.
      No consensus to do anything.

Regards,

Rajan Bhakta
z/OS XL C/C++ Compiler Technical Architect
ISO C Standards Representative for Canada, PL22.11 Chair (USA)
C Compiler Development
Contact: rbhakta at us.ibm.com, Rajan Bhakta/Houston/IBM

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