Hi Andrew: Jerry's recent commit message for Ada example 29 inspired me to investigate further, and indeed the fortran (and presumably the rest of the non-C) examples are an hour out compared to the C example.
For example, in python calendar.timegm((2005,12,1,0,0,0)) returns 1133395200 which is consistent with Jerry's recent fix for the Ada example, but an hour inconsistent with f77/x29f.fm4: tstart = 1133398800 f95/x29f.f90: tstart = 1133398800 java/x29.java: tstart = 1133398800; Part of the problem here is the time code in example 29 is just too complicated. mktime has a local timezone offset which must be compensated by the offset logic which is difficult to follow without doing a lot of man reading. I think that logic is actually working and only the constants in the non-C examples are out by an hour (as shown above), but to clear up all confusion I suggest we make the time code in the C example 29 much simpler by working with UTC from the start. The way to do that is to use the POSIX equivalent of the Linux timegm function (written in terms of mktime and tzset, see the Linux timegm man page) for maximum portability. Also, for the python example we should directly use calendar.timegm (as above). There might be something equivalent to timegm in java as well. Andrew, if you agree to the above straightforward changes I should be able to do them (except for finding a timegm equivalent in java) myself. 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 __________________________ ------------------------------------------------------------------------- Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
