On 2011-01-27 01:20-0800 Alan W. Irwin wrote: > Hi Arjen: > > I have the sed script almost working for f95. The only problematic > statement generated is > > integer, parameter :: PL_FCI_MARK = z'80000000' > > That z'80000000' causes an integer overflow. The problem is that > z'80000000' is not a normal 4-byte integer. Assuming twos-complement > integers, then the negative of that number is also z'80000000'. That > is, it is a "negative" zero or zero with the sign bit set. Do you know > how to put that exact pattern of bits into a 4-byte integer in fortran? > > For now, I have simply dropped PL_FCI_MARK (since it is not used in > any of the examples), but it would be nice to include it for > completeness if you can figure out an equivalent of the above > parameter statement that will put that exact pattern into the > PL_FCI_MARK 4-byte integer. > > Also, could you comment on BOZ constants used in parameter statements > such as > > integer, parameter :: PL_FCI_SERIF = z'1' > > gfortran is happy to accept those, but I am not sure other Fortran > compilers are able to. The issue is that hexadecimal constants are > sometimes used in plplotcapi.i (and the equivalent #defines in > include/plplot.h) so I have converted those to the BOZ form using the > sed script. If the BOZ form is not acceptable to some Fortran > compilers in the above context, then I could use a python script to do > the conversions from hexadecimal constants to decimal constants. > > Further changes to the Fortran 95 examples are required by this sed > script approach since you cannot have local parameters in the examples > trying to override the parameter values set by the module. So with > luck it should only be a matter of removing all those local parameters > that are set in the Fortran 95 examples, testing to make sure > everything works as before, then doing the commit. I plan to continue > with those steps after I get some sleep.
Hi Arjen: Well, I stayed up a bit later and I finished these described Fortran 95 changes as of revision 11511. So please take a look at the generated bindings/f95/plplot_parameters.h and let me know if there are any concerns about the BOZ form (actually just Z form) used to define the values of some of the parameters there. And the above question about a Fortran method of setting the negative zero bit pattern for PL_FCI_MARK still remains as well. Aside from these questions and committing the sed script and a CMake custom target to use that script appropriately, I am done with Fortran 95 for a while. Also, the only thing left on my Fortran 77 agenda is an equivalent sed-script approach there for generating bindings/f77/plplot_parameters.h. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); PLplot scientific plotting software package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
