is_nan.h

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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
//
// is_nan.h: Rcpp R/C++ interface class library -- is_nan
//
// Copyright (C) 2013 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__is_nan_h
#define Rcpp__sugar__is_nan_h
 
namespace Rcpp{
namespace sugar{
 
template <int RTYPE, bool NA, typename VEC_TYPE>
class IsNaN : public ::Rcpp::VectorBase< LGLSXP, false, IsNaN<RTYPE,NA,VEC_TYPE> > {
public:
 
        IsNaN( const VEC_TYPE& obj_) : obj(obj_){}
 
        inline int operator[]( R_xlen_t i ) const {
                return ::Rcpp::traits::is_nan<RTYPE>( obj[i] ) ;
        }
 
        inline R_xlen_t size() const { return obj.size() ; }
 
private:
        const VEC_TYPE& obj ;
 
} ;
 
 
} // sugar
 
template <int RTYPE, bool NA, typename T>
inline sugar::IsNaN<RTYPE,NA,T> is_nan( const Rcpp::VectorBase<RTYPE,NA,T>& t){
        return sugar::IsNaN<RTYPE,NA,T>( t.get_ref() ) ;
}
 
} // Rcpp
#endif