Le 14/10/13 21:47, Mark Fredrickson a écrit :
Thank you to Romain and Dirk. I've seen some C++ rank implementations,
and I'll probably copy one of those.
Lastly, not a milligram of Rcpp in this question. Plain R programming
questions should go to r-devel, not rcpp-devel.
Noted. My apologies. I was hoping there was some magic/sugar for this
particular problem that I had missed in the docs. Perhaps something that
negotiated the look up table that R uses for these functions.
-M
Here comes the magic.
The internal function table (R_FunTab) is not hidden. With a bit of
copying from R's unexported Defn.h, you can get the function pointer for
the internal rank. see this gist:
https://gist.github.com/romainfrancois/6981372
However, if you do this in a package, there is a good chance R CMD check
will moan about it because you use R_FunTab.
Romain
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Romain Francois
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