R help - Jun 2012 - R/C++ interfaces: documentation for SET_STRING_ELT, PROTECT, etc...

Dear all,

I am reading C++ code that is called in an R package. It is not clear to me what
SET_STRING_ELT, getAttrib, etc exactly do.

I understand that these are macros that have been declared in Rinternals.h and
who are used for the correct "translation" of the R data structures,
but I have not found their definition, and it is not clear to me what they do to
their inputs and what type of output they generate precisely.

I have consulted several resources ("Writing R extensions",
Gentleman's "R programming for bioinformatics", Chamber's
"Software for Data Analysis"), who do mention these macros, but the
discussion remains very general (and too general for me to understand the code
that I am deciphering).

I have not found a description on CRAN either. Does anybody know an accessible
documentation  that could help me forward?


Laurent Franckx, PhD
VITO NV
Boeretang 200, 2400 MOL, Belgium
Tel. + 32 14 33 58 22
Skype: laurent.franckx
laurent.franckx at vito.be







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