On 29/05/13 14:20, Asis Hallab wrote:
Dear Rcpp Experts,
hopefully this question of mine is not too stupid.
Well, I am a greenhorn with Rcpp and my C/C++ expertise is quite dusty.
I generated a new Rccp package and changed the hello_world function.
The attached Rcpp Code stops working if I rename the method
"rcpp_hello_world" to
"conditionalProbabilityTables". The error I get is:
"conditionalProbabilityTables" not available for .Call() for package "PhyloFun"
I swear the only thing I changed was the function name. Hence my question:
Are there any restrictions I am unaware of?
Without seeing your changed code, it is hard to know which case you
missed. I have certainly changed the names exported, without problem.
Make sure you consistently change the name:
In the source file (cpp)
In the header (.h)
In the .call statement
Check also what the 'exportPattern' is in NAMESPACE. It will probably
look like:
exportPattern("^[[:alpha:]]+")
Which is fine, that just exports everything.
I searched the web for "rcpp function name restrictions" and such, but
could not find anythig related.
The Rcpp Code I generated with Rcpp.package.skeleton( name="PhyloFun" )
//
// Header File:
//
#ifndef _PhyloFun_pp_RCPP_HELLO_WORLD_H
#define _PhyloFun_pp_RCPP_HELLO_WORLD_H
#include <Rcpp.h>
#ifdef _OPENMP
#include <omp.h>
#else
#define omp_set_num_thread(x) 1
#endif
RcppExport SEXP rcpp_hello_world( SEXP uniqueEdgeLengths, SEXP annos, SEXP
stringifiedAnnotations, SEXP annotsMutationProbTableList, SEXP
mutTblLengthColIndx, SEXP pMutColIndx, SEXP unknownAnnot, SEXP nThreads ) ;
#endif
//
// CPP File
//
#include "rcpp_hello_world.h"
// CharacterVector x = CharacterVector::create( "foo", "bar" ) ;
// NumericVector y = NumericVector::create( 0.0, 1.0 ) ;
// List z = List::create( x, y ) ;
//
// return z ;
SEXP rcpp_hello_world( SEXP uniqueEdgeLengths, SEXP annos, SEXP
stringifiedAnnotations, SEXP annotsMutationProbTableList, SEXP
mutTblLengthColIndx, SEXP pMutColIndx, SEXP unknownAnnot, SEXP nThreads ){
using namespace Rcpp ;
BEGIN_RCPP
NumericVector numberThreads = NumericVector( nThreads );
omp_set_num_threads( numberThreads(0) );
NumericVector edgeLengths = NumericVector( uniqueEdgeLengths );
List cpts = List();
#pragma omp parallel for
for ( int i = 0; i < edgeLengths.size(); i++ )
{
// NumericVector cpt = conditionalProbabilityTable( edgeLengths( i ),
// annos, stringifiedAnnotations, annotsMutationProbTableList,
// mutTblLengthColIndx, pMutColIndx, unknownAnnot );
// Named cptListEntry = Named( edgeLengths( i ) );
// cptListEntry = cpt;
NumericMatrix cpt = NumericMatrix( 1000, 1000 );
cpts.push_back( cpt );
}
return( wrap( cpts ) );
END_RCPP
}
//
// Makevars
//
PKG_CXXFLAGS="-fopenmp"
PKG_LIBS=$(shell $(R_HOME)/bin/Rscript -e "Rcpp:::LdFlags()")
$(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS) -fopenmp
Help will be much appreciated!
Cheers!
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