Rcpp Version 0.12.12
rev.h
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1 // -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
2 //
3 // rev.h: Rcpp R/C++ interface class library -- rev
4 //
5 // Copyright (C) 2010 - 2011 Dirk Eddelbuettel and Romain Francois
6 //
7 // This file is part of Rcpp.
8 //
9 // Rcpp is free software: you can redistribute it and/or modify it
10 // under the terms of the GNU General Public License as published by
11 // the Free Software Foundation, either version 2 of the License, or
12 // (at your option) any later version.
13 //
14 // Rcpp is distributed in the hope that it will be useful, but
15 // WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 // GNU General Public License for more details.
18 //
19 // You should have received a copy of the GNU General Public License
20 // along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
21 
22 #ifndef Rcpp__sugar__rev_h
23 #define Rcpp__sugar__rev_h
24 
25 namespace Rcpp{
26 namespace sugar{
27 
28 template <int RTYPE, bool NA, typename T>
29 class Rev : public Rcpp::VectorBase< RTYPE ,NA, Rev<RTYPE,NA,T> > {
30 public:
33 
34  Rev( const VEC_TYPE& object_ ) :
35  object(object_), n(object_.size() - 1) {}
36 
37  inline STORAGE operator[]( R_xlen_t i ) const {
38  return object[n - i] ;
39  }
40  inline R_xlen_t size() const { return n + 1; }
41 
42 private:
43  const VEC_TYPE& object ;
44  R_xlen_t n ;
45 } ;
46 
47 } // sugar
48 
49 template <int RTYPE,bool NA, typename T>
51  return sugar::Rev<RTYPE,NA,T>( t ) ;
52 }
53 
54 } // Rcpp
55 #endif
56 
R_xlen_t size() const
Definition: rev.h:40
Rev(const VEC_TYPE &object_)
Definition: rev.h:34
sugar::Rev< RTYPE, NA, T > rev(const VectorBase< RTYPE, NA, T > &t)
Definition: rev.h:50
R_xlen_t n
Definition: rev.h:44
Rcpp::traits::storage_type< RTYPE >::type STORAGE
Definition: rev.h:32
const VEC_TYPE & object
Definition: rev.h:43
Rcpp API.
Definition: algo.h:28
STORAGE operator[](R_xlen_t i) const
Definition: rev.h:37
Rcpp::VectorBase< RTYPE, NA, T > VEC_TYPE
Definition: rev.h:31