Tks for your guide, but before i know which maillist should i ask the question, i could only ask it here. 'figure out' i mean 'understand'. Forgive my pool english :).
-- PO SU mail: desolato...@163.com Majored in Statistics from SJTU At 2014-08-19 06:28:06, "Prof Brian Ripley" <rip...@stats.ox.ac.uk> wrote: >Please do read the posting guide (clearly you have not as you sent HTML). > >- This is the wrong list: it is a question about C code. > >- In any case, it is about C. The R Internals manual may help you, >otherwise you need to talk to a local C adviser. (Even if this were not >off-topic here, we do not know what it is you cannot 'figure out' and >you need to interact with someone.) > >On 19/08/2014 11:14, PO SU wrote: >> >> >> Dear Rusers, >> when i am reading Rinternals.h file, i can't understand the following >> codes in lines 395-407: >> >> >> #define CHAR(x)R_CHAR(x) >> const char *(R_CHAR)(SEXP x); >> /* Various tests with macro versions below */ >> Rboolean (Rf_isNull)(SEXP s); >> Rboolean (Rf_isSymbol)(SEXP s); >> Rboolean (Rf_isLogical)(SEXP s); >> Rboolean (Rf_isReal)(SEXP s); >> Rboolean (Rf_isComplex)(SEXP s); >> Rboolean (Rf_isExpression)(SEXP s); >> Rboolean (Rf_isEnvironment)(SEXP s); >> Rboolean (Rf_isString)(SEXP s); >> Rboolean (Rf_isObject)(SEXP s); >> >> >> I can't figure out what are "R_CHAR,Rf_isNull....Rf_isObject" meaning, they >> seem like function declarations, Rf_XXX maybe function pointers? >> I need your help. >> >> >> >> >> -- >> >> PO SU >> mail: desolato...@163.com >> Majored in Statistics from SJTU >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > > >-- >Brian D. Ripley, rip...@stats.ox.ac.uk >Emeritus Professor of Applied Statistics, University of Oxford >1 South Parks Road, Oxford OX1 3TG, UK [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
