[Rcpp-devel] Got error when trying to run example in Intro vignette

[Gabor Grothendieck]

I tried copying the example in the intro vignette
   http://dirk.eddelbuettel.com/code/rcpp/Rcpp-introduction.pdf
and get the following error. What's wrong?

> library(inline)
> library(Rcpp)
> funIntro <- cxxfunction(signature(a = "numeric", b = "numeric"), body = '
+ RcppExport SEXP convolve3cpp(SEXP a, SEXP b) {
+ Rcpp::NumericVector xa(a);
+ Rcpp::NumericVector xb(b);
+ int n_xa = xa.size(), n_xb = xb.size();
+ int nab = n_xa + n_xb - 1;
+ Rcpp::NumericVector xab(nab);
+ for (int i = 0; i < n_xa; i++)
+ for (int j = 0; j < n_xb; j++)
+ xab[i + j] += xa[i] * xb[j];
+ return xab;
+ }', plugin="Rcpp")
file303dbfd.cpp: In function 'SEXPREC* file303dbfd(SEXPREC*, SEXPREC*)':
file303dbfd.cpp:31:1: error: expected unqualified-id before string constant
make: *** [file303dbfd.o] Error 1

ERROR(s) during compilation: source code errors or compiler
configuration errors!

Program source:
  1:
  2: // includes from the plugin
  3:
  4: #include <Rcpp.h>
  5:
  6:
  7: #ifndef BEGIN_RCPP
  8: #define BEGIN_RCPP
  9: #endif
 10:
 11: #ifndef END_RCPP
 12: #define END_RCPP
 13: #endif
 14:
 15: using namespace Rcpp;
 16:
 17:
 18: // user includes
 19:
 20:
 21: // declarations
 22: extern "C" {
 23: SEXP file303dbfd( SEXP a, SEXP b) ;
 24: }
 25:
 26: // definition
 27:
 28: SEXP file303dbfd( SEXP a, SEXP b ){
 29: BEGIN_RCPP
 30:
 31: RcppExport SEXP convolve3cpp(SEXP a, SEXP b) {
 32: Rcpp::NumericVector xa(a);
 33: Rcpp::NumericVector xb(b);
 34: int n_xa = xa.size(), n_xb = xb.size();
 35: int nab = n_xa + n_xb - 1;
 36: Rcpp::NumericVector xab(nab);
 37: for (int i = 0; i < n_xa; i++)
 38: for (int j = 0; j < n_xb; j++)
 39: xab[i + j] += xa[i] * xb[j];
 40: return xab;
 41: }
 42: END_RCPP
 43: }
 44:
 45:
Error in compileCode(f, code, language = language, verbose = verbose) :
  Compilation ERROR, function(s)/method(s) not created!
file303dbfd.cpp: In function 'SEXPREC* file303dbfd(SEXPREC*,
SEXPREC*)':
file303dbfd.cpp:31:1: error: expected unqualified-id before string constant
make: *** [file303dbfd.o] Error 1
In addition: Warning message:
running command 'C:\PROGRA~1\R\R-212~1.X/bin/i386/R CMD SHLIB
file303dbfd.cpp 2> file303dbfd.cpp.err.txt' had status 1
>


-- 
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at gmail.com