(j3.2006) What IFIP WG 2.5 has sent to IEEE P754

Bill Long longb
Wed Nov 21 17:47:14 EST 2007

Dan Nagle wrote:
> Hello,
> Bill Long wrote:
>> Priceless!  This should keep them busy for another 10 years.  At the 
>> February WG5 meeting, can we finally delete UK-003 "Conformance to 754R" 
>> from the work list?
> Whether the debate continues or not is unknown now,
> but we should be ready for the contingency.

It's more than that.  If this new stuff ends up in 754R, I definitely do 
not want conformance a requirement in Fortran.  
> This has nothing to do with radix= in selected_real_kind(),
> only in ieee_selected_real_kind().
> Is there more?

I don't think so.  Here is the text extracted from the repository:

Detailed Specification:
This proposal is dependent on facilities to specify decimal arithmetic
being adopted separately.  It is necessarily an outline specification
as IEEE 754R is not yet complete.

1.  Add reference to IEEE 754R in section 1.9.

2.  Add new intrinsic procedures as required by IEEE 754R section 5
(Operations) and Appendix L (Language extensions) to section 14 of the
Fortran base language.  Depending on details in the final form of IEEE
754R, some procedures may be added to section 13.  References to the
term "IEEE arithmetic", which occur mainly in section 14 but also in
sections 7, 13 and 15, may need to be redefined.

As noted, the proposal to add radix= to the selected_real_kind intrinsic 
was a different work item, UK-002.


Bill Long                                   longb at cray.com
Fortran Technical Support    &              voice: 651-605-9024
Bioinformatics Software Development         fax:   651-605-9142
Cray Inc., 1340 Mendota Heights Rd., Mendota Heights, MN, 55120


More information about the J3 mailing list