POSIX90

[Walter Spector]

Klaus wrote:
> Am Samstag 23 Februar 2008 schrieb Walter Spector:
>> 1.) Using the term "POSIX" for the modules Klaus wrote is misleading,
>> since it does not conform to any published POSIX spec.  The Fortran
>> bindings that were approved by POSIX were 1003.9-1992.
> You are of course right. Your reference is to the Fortran77 bindings. There
> do exist Fortran90 bindings, though this is labeled inactive in the source I 
> found ( http://tinyurl.com/394w3k ). It is named Posix.19 there 

Unfortunately, it seems that the POSIX 1003.19 committee disbanded before
producing anything.  So if one wishes to be POSIX-compliant, 1003.9 is
the only choice.  :(

>> 2.) How compatible is Klaus' package with the existing intrinsics of
>> the same name?  Or other implementations, such as NAGs?
> It is compatible to the last NAG version I personally used (Rel. 4.) and a 
> superset of the functions provided there- regexps eg where not provided.
> The history of the code is that I moved from NAG to gfortran an needed a 
> module to handle the posix calls in my code.

There is a gfortran enhancement request (ID 25020) that asks for a NAG-
compatible set of modules.  Perhaps your existing code could satisfy it?

>> Since there are no published specs for any of these binding libraries,
>> (other than 1003.9-1992 - which none of them conform to), how are
>> incompatibilities between them to be resolved?  Does it make sense to
>> introduce yet another somewhat incompatible package?
> Well, I think we (or rather I) should simply get the Posix standard and stick 
> to it. If nobody can provide us with access to it, I would be willing to buy 
> it. It cant be that expensive?

I have a paper copy, so could answer questions.  It is about 150 pages
long - about 1/3rd of that is appendices.

The Intel compiler (as of 10.0) has the best implementation of PXF that I know
of.  They have all of the PXF routines in their library manual:

	http://www.intel.com/software/products/compilers/techtopics/for_lib.htm

Also all the man pages for the SGI IRIX version are online at:

	http://techpubs.sgi.com

(But note that some of the examples are buggy...)

FWIW, I implemented a fairly complete set of the PXF library for personal
use a few years ago.  However it is not GPLed.  I will offer to run anything
that is developed through my unit tests to help get the gfortran implementation
as close to perfect as possible.

W.