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: desolator88 at 163.com
> Majored in Statistics from SJTU
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at 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, ripley at stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
1 South Parks Road, Oxford OX1 3TG, UK