[Omp] Need help interpreting section 2.1.3.1 of the Fortran spec

[Bernd Mohr]

Dieter,
what does your last "false" (after =>) mean?
a) the "If these ..." sentence is false and the C$ ABC line is not a comment
b) the C$ABC line is not a conditional compilation line and therefore a comment
?? ;-)

Bernd

On Thu, Dec 09, 2004 at 05:13:46PM +0100, Dieter an Mey wrote:
> C$ABC  garbage
> 
> "The sentinel must start in column 1 and appear as a single word with no 
> intervening white space."
> true
> 
> "Fortran fixed form line length, white space, continuation, and column 
> rules apply to the line."
> true
> 
> "After the sentinel is replaced with two spaces, initial lines must have 
> a space or zero in column 6 and only white space and numbers in columns 
> 1 through 5."
> false
> 
> "After the sentinel is replaced with two spaces, continuation lines must 
> have a character other than a space or zero in column 6 and only white 
> space in columns 1 through 5."
> false
> 
> =>
> "If these criteria are not met, the line is treated as a comment and 
> ignored."
> false
> 
> This is my understanding from the wording in the 2.5 Draft of the spec.
> 
> best regards
> Dieter
> 
> Shah, Sanjiv wrote:
> 
> > Hi Bernd,
> > I don't want to get in the middle of an argument but I believe you are
> > correct.  This line should be ignored.
> > Sanjiv 
> > 
> > 
> > --
> > Sanjiv, 217-403-4244
> > 
> > -----Original Message-----
> > From: Omp-bounces at openmp.org [mailto:Omp-bounces at openmp.org] On Behalf
> > Of Bernd Mohr
> > Sent: Thursday, December 09, 2004 2:30 AM
> > To: omp at openmp.org
> > Cc: helenhyw at ca.ibm.com
> > Subject: [Omp] Need help interpreting section 2.1.3.1 of the Fortran
> > spec
> > 
> > Hi all,
> > 
> > I am currently in discussion with the IBM compiler folks about the
> > correct
> > compilation of the following Fortran fixed source OpenMP program:
> > 
> > -------------------------------------------------------- 
> >        program iii 
> > C$ABC  garbage 
> >        end 
> > -------------------------------------------------------- 
> > 
> > When I read section 2.1.3.1 of the Fortran V2.0 spec (especially the
> > last
> > sentence which states "If these criteria are not met, the line is
> > treated
> > as a comment and ignored.") I come to the conclusion, that if I compile
> > this simple program above in OpenMP compilation mode, the second line is
> > a
> > comment (as it does not fullfils the criteria listed for an initial line
> > and then, because of the last sentence, it is a comment and ignored).
> > 
> > The IBM compiler treats the second line as an OpenMP conditional
> > compilation line (and then I get of course compilation errors), because
> > they claim (if I understand their arguments right) that the last
> > sentence
> > "If these criteria are not met, the line is treated as a comment and
> > ignored."
> > only applies to continuation lines.
> > 
> > Who is right? ;-)
> > 
> > Thanks
> > Bernd
> > 
> 
> 
> -- 
> --------------------------------------------------------------------
> Dieter an Mey
> High Performance Computing               Hochleistungsrechnen
> RWTH Aachen University                   Rechen- und Kommunikations-
> Center for Computing and Communication   zentrum der RWTH Aachen
> phone: ++49-(0)241-80-24377              Seffenter Weg 23
> fax:   ++49-(0)241-80-22134              52074 Aachen, Germany
> email: anmey at rz.rwth-aachen.de
> --------------------------------------------------------------------
> 

-- 
Bernd Mohr / Research Centre Juelich, ZAM, Germany / B.Mohr at fz-juelich.de