col.h

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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
//
// col.h: Rcpp R/C++ interface class library -- col
//
// Copyright (C) 2010 - 2011 Dirk Eddelbuettel and Romain Francois
//
// This file is part of Rcpp.
//
// Rcpp is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// Rcpp is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Rcpp.  If not, see <http://www.gnu.org/licenses/>.
 
#ifndef Rcpp__sugar__col_h
#define Rcpp__sugar__col_h
 
namespace Rcpp{
namespace sugar{
 
template <int RTYPE, bool LHS_NA, typename LHS_T>
class Col : public MatrixBase<
        INTSXP ,
        false ,
        Col<RTYPE,LHS_NA,LHS_T>
> {
public:
        typedef Rcpp::MatrixBase<RTYPE,LHS_NA,LHS_T> LHS_TYPE ;
 
        Col( const LHS_TYPE& lhs) : nr( lhs.ncol() ), nc( lhs.ncol() ) {}
 
        inline int operator()( int i, int j ) const {
                return j + 1 ;
        }
 
        inline R_xlen_t size() const { return static_cast<R_xlen_t>(nr) * nc ; }
        inline int nrow() const { return nr; }
        inline int ncol() const { return nc; }
 
private:
        int nr, nc ;
} ;
 
} // sugar
 
template <int RTYPE, bool LHS_NA, typename LHS_T>
inline sugar::Col<RTYPE,LHS_NA,LHS_T>
col( const Rcpp::MatrixBase<RTYPE,LHS_NA,LHS_T>& lhs){
        return sugar::Col<RTYPE,LHS_NA,LHS_T>( lhs ) ;
}
 
} // Rcpp
 
#endif