[Rcpp-devel] NA value for dates

Christian Gunning xian at unm.edu
Sat Oct 6 13:19:16 CEST 2012


> I would LOVE to offer assistance, but I don't think I can do much - my C/C++
> knowledge is fairly limited.

Seems to me like you're doing pretty well so far!  As often as not,
identifying the *location* of the problem is the hardest part.

> I checked out Rcpp's src/Date.cpp . It seems all the work is done on
> Date::update_tm(), which calls gmtime_(). But where is struct tm and time_t
> defined? I guess this is the internal representation of dates in R, correct?

Have you looked at the doxygen docs?  They're machine-generated and
can be confusing on first read.  On the other hand, they're big-C
Complete.  Following your trail, see examples of time_t here:

Also, http://www.cplusplus.com/reference/clibrary/ctime/time_t/


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