On 28 April 2013 at 22:20, Subodh Acharya wrote:
| Hi, I am a beginner-class use of the amazing Rcpp. I am using to simulate
| finite state Markov chains.
| Previously all the c++ function I wrote were working perfectly. I compiled all
| my functions in package and they work fine.
|
| But now after I updated to Rcpp 0.10.3, whenever I sourceCpp, it throws a
| 'unused arguement' error.
| However when I use the all the functions to build a package, it works fine.
|
| I think this is a really small problem, but its beyond my knowledge of c++
| Any help will be greatly appreciated.
|
| Following are simple example codes and the error I am getting..
|
|
|
| cppFunction('
| + int add(int x, int y, int z) {
| + int sum = x + y + z;
| + return sum;
| + }'
| + )
| Error in Rcpp:::sourceCppFunction(function(x, y, z) { :
| unused argument ("sourceCpp_94801_add")
Works perfectly fine here:
R> cppFunction('int add(int x, int y, int z) { int sum = x + y + z; return sum;
}')
R> add(1,2,3)
[1] 6
R>
Rcpp 0.10.3.* (current SVN, no real change from 0.10.3)
Maybe you hosed your setup, and set 'odd' compiler options...
Dirk
|
| Second example code
|
| #include <Rcpp.h>
| #include <iostream>
| #include <vector>
|
| // [[Rcpp::export]]
|
| using namespace Rcpp;
| using namespace std;
|
|
| int mcfunC(int oldState, NumericVector states, NumericMatrix prob_mat){
|
| RNGScope scope;
|
| NumericVector newState(1);
|
| int pixel = oldState;
|
| Environment base("package:base");
| Function sample = base["sample"];
|
| newState = sample(states, Named("size", 1), Named("prob", prob_mat(pixel,
| _)));
|
| int state_new = newState[0];
|
| return(state_new);
|
| }
|
|
| Rcpp::sourceCpp('src/mcfunC.cpp')
| Error in Rcpp:::sourceCppFunction(function(oldState, states, prob_mat) { :
| unused argument ("sourceCpp_20302_mcfunC")
|
|
| Thanks in advance.
|
|
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--
Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com
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