1) You include libraries just like you would always do. Here is the
example from my package that uses external libraries of ImageMagick and
GTK, standard libraries (stdio, pthread) and R libraries:
#include <R.h>
#include <Rdefines.h>
#include <R_ext/Rdynload.h>
#include <R_ext/Error.h>
#include <R_ext/Memory.h>
#include <magick/ImageMagick.h>
#include <stdio.h>
#ifndef WIN32
# include <pthread.h>
#endif
/* These are to use GTK */
#ifdef USE_GTK
# include <gtk/gtk.h>
# ifdef WIN32
typedef unsigned long ulong;
# include <sys/types.h>
# else
# include <gdk/gdkx.h>
# endif
#endif
2) The above is C code and no namespaces are used, however the piece
below is C++ code using namespaces and STL. With C++ you only need to
make sure that you export your function as C: extern "C" {}:
#include <R.h>
#include <Rdefines.h>
#include <R_ext/Rdynload.h>
#include <R_ext/Error.h>
#include <R_ext/Memory.h>
#include <magick/ImageMagick.h>
/* list of STL, C++ */
#include <list>
#define BG 0.0
struct TheSeed {
int index, seed;
};
typedef std::list<int> IntList;
typedef std::list<TheSeed> SeedList;
Oleg
On Mon, 2007-09-17 at 09:14 +0700, Ольга К. Камнева wrote:
> Hello, All!
>
> I'm new for R-devel list. And I'd like to ask some questions,
> maybe they will be stuped for the most part of members of the
> list.
> I need to call function which is written in C++ from R.
> My questions are:
> 1. How should I include libraries (for example, iomanip,
> sstream, iostream)?
> 2. Can I use namespace?
>
> Thanks All :)
> Olga
>
> ______________________________________________
> R-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
--
Dr Oleg Sklyar * EBI-EMBL, Cambridge CB10 1SD, UK * +44-1223-494466
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