comparison armadillo-2.4.4/include/armadillo_bits/Proxy.hpp @ 0:8b6102e2a9b0

Armadillo Library

+// Copyright (C) 2010-2012 NICTA (www.nicta.com.au)
+// Copyright (C) 2010-2012 Conrad Sanderson
+// 
+// This file is part of the Armadillo C++ library.
+// It is provided without any warranty of fitness
+// for any purpose. You can redistribute this file
+// and/or modify it under the terms of the GNU
+// Lesser General Public License (LGPL) as published
+// by the Free Software Foundation, either version 3
+// of the License or (at your option) any later version.
+// (see http://www.opensource.org/licenses for more info)
+
+
+//! \addtogroup Proxy
+//! @{
+
+
+
+template<typename T1>
+class Proxy
+  {
+  public:
+  inline Proxy(const T1& A)
+    {
+    arma_type_check(( is_arma_type<T1>::value == false ));
+    }
+  };
+
+
+
+// ea_type is the "element accessor" type,
+// which can provide access to elements via operator[]
+
+template<typename eT>
+class Proxy< Mat<eT> >
+  {
+  public:
+  
+  typedef eT                                       elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef Mat<eT>                                  stored_type;
+  typedef const eT*                                ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Mat<eT>& Q;
+  
+  inline explicit Proxy(const Mat<eT>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return Q.n_cols; }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q.memptr(); }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>& X) const { return (void_ptr(&Q) == void_ptr(&X)); }
+  };
+
+
+
+template<typename eT>
+class Proxy< Col<eT> >
+  {
+  public:
+  
+  typedef eT                                       elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef Col<eT>                                  stored_type;
+  typedef const eT*                                ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Col<eT>& Q;
+  
+  inline explicit Proxy(const Col<eT>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return 1;        }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q.memptr(); }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>& X) const { return (void_ptr(&Q) == void_ptr(&X)); }
+  };
+
+
+
+template<typename eT>
+class Proxy< Row<eT> >
+  {
+  public:
+  
+  typedef eT                                       elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef Row<eT>                                  stored_type;
+  typedef const eT*                                ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Row<eT>& Q;
+  
+  inline explicit Proxy(const Row<eT>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return 1;        }
+  arma_inline uword get_n_cols() const { return Q.n_cols; }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q.memptr(); }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>& X) const { return (void_ptr(&Q) == void_ptr(&X)); }
+  };
+
+
+
+template<typename eT, typename gen_type>
+class Proxy< Gen<eT, gen_type > >
+  {
+  public:
+  
+  typedef          eT                              elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef Gen<eT, gen_type>                        stored_type;
+  typedef const Gen<eT, gen_type>&                 ea_type;
+  
+  static const bool prefer_at_accessor = Gen<eT, gen_type>::prefer_at_accessor;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Gen<eT, gen_type>& Q;
+  
+  inline explicit Proxy(const Gen<eT, gen_type>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows;          }
+  arma_inline uword get_n_cols() const { return Q.n_cols;          }
+  arma_inline uword get_n_elem() const { return Q.n_rows*Q.n_cols; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q; }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>&) const { return false; }
+  };
+
+
+
+template<typename T1, typename op_type>
+class Proxy< Op<T1, op_type> >
+  {
+  public:
+  
+  typedef typename T1::elem_type                   elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef Mat<elem_type>                           stored_type;
+  typedef const elem_type*                         ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Mat<elem_type> Q;
+  
+  inline explicit Proxy(const Op<T1, op_type>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return Q.n_cols; }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q.memptr(); }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>&) const { return false; }
+  };
+
+
+
+template<typename T1, typename T2, typename glue_type>
+class Proxy< Glue<T1, T2, glue_type> >
+  {
+  public:
+  
+  typedef typename T1::elem_type                   elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef Mat<elem_type>                           stored_type;
+  typedef const elem_type*                         ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Mat<elem_type> Q;
+  
+  inline explicit Proxy(const Glue<T1, T2, glue_type>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return Q.n_cols; }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q.memptr(); }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>&) const { return false; }
+  };
+
+
+
+template<typename eT>
+class Proxy< subview<eT> >
+  {
+  public:
+  
+  typedef eT                                       elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef subview<eT>                              stored_type;
+  typedef const subview<eT>&                       ea_type;
+  
+  static const bool prefer_at_accessor = true;
+  static const bool has_subview        = true;
+  
+  arma_aligned const subview<eT>& Q;
+  
+  inline explicit Proxy(const subview<eT>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return Q.n_cols; }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q; }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>& X) const { return (void_ptr(&(Q.m)) == void_ptr(&X)); }
+  };
+
+
+
+template<typename eT, typename T1>
+class Proxy< subview_elem1<eT,T1> >
+  {
+  public:
+  
+  typedef eT                                       elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef Mat<eT>                                  stored_type;
+  typedef const eT*                                ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Mat<eT> Q;
+  
+  inline explicit Proxy(const subview_elem1<eT,T1>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return 1;        }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q.memptr(); }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>&) const { return false; }
+  };
+
+
+
+template<typename eT>
+class Proxy< diagview<eT> >
+  {
+  public:
+  
+  typedef eT                                       elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef diagview<eT>                             stored_type;
+  typedef const diagview<eT>&                      ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = true;
+  
+  arma_aligned const diagview<eT>& Q;
+  
+  inline explicit Proxy(const diagview<eT>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return 1;        }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q; }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>& X) const { return (void_ptr(&(Q.m)) == void_ptr(&X)); }
+  };
+
+
+
+
+template<typename T1, typename eop_type>
+class Proxy< eOp<T1, eop_type > >
+  {
+  public:
+  
+  typedef typename T1::elem_type                   elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef eOp<T1, eop_type>                        stored_type;
+  typedef const eOp<T1, eop_type>&                 ea_type;
+  
+  static const bool prefer_at_accessor = eOp<T1, eop_type>::prefer_at_accessor;
+  static const bool has_subview        = eOp<T1, eop_type>::has_subview;
+  
+  arma_aligned const eOp<T1, eop_type>& Q;
+  
+  inline explicit Proxy(const eOp<T1, eop_type>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.get_n_rows(); }
+  arma_inline uword get_n_cols() const { return Q.get_n_cols(); }
+  arma_inline uword get_n_elem() const { return Q.get_n_elem(); }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q; }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>& X) const { return Q.P.is_alias(X); }
+  };
+
+
+
+template<typename T1, typename T2, typename eglue_type>
+class Proxy< eGlue<T1, T2, eglue_type > >
+  {
+  public:
+  
+  typedef typename T1::elem_type                   elem_type;
+  typedef typename get_pod_type<elem_type>::result pod_type;
+  typedef eGlue<T1, T2, eglue_type>                stored_type;
+  typedef const eGlue<T1, T2, eglue_type>&         ea_type;
+  
+  static const bool prefer_at_accessor = eGlue<T1, T2, eglue_type>::prefer_at_accessor;
+  static const bool has_subview        = eGlue<T1, T2, eglue_type>::has_subview;
+  
+  arma_aligned const eGlue<T1, T2, eglue_type>& Q;
+  
+  inline explicit Proxy(const eGlue<T1, T2, eglue_type>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.get_n_rows(); }
+  arma_inline uword get_n_cols() const { return Q.get_n_cols(); }
+  arma_inline uword get_n_elem() const { return Q.get_n_elem(); }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];           }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row, col); }
+  
+  arma_inline ea_type get_ea() const { return Q; }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>& X) const { return (Q.P1.is_alias(X) || Q.P2.is_alias(X)); }
+  };
+
+
+
+template<typename out_eT, typename T1, typename op_type>
+class Proxy< mtOp<out_eT, T1, op_type> >
+  {
+  public:
+  
+  typedef          out_eT                       elem_type;
+  typedef typename get_pod_type<out_eT>::result pod_type;
+  typedef          Mat<out_eT>                  stored_type;
+  typedef          const elem_type*             ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Mat<out_eT> Q;
+  
+  inline explicit Proxy(const mtOp<out_eT, T1, op_type>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return Q.n_cols; }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];          }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row,col); }
+  
+  arma_inline ea_type get_ea() const { return Q.memptr(); }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>&) const { return false; }
+  };
+
+
+
+template<typename out_eT, typename T1, typename T2, typename glue_type>
+class Proxy< mtGlue<out_eT, T1, T2, glue_type > >
+  {
+  public:
+  
+  typedef          out_eT                       elem_type;
+  typedef typename get_pod_type<out_eT>::result pod_type;
+  typedef          Mat<out_eT>                  stored_type;
+  typedef          const elem_type*             ea_type;
+  
+  static const bool prefer_at_accessor = false;
+  static const bool has_subview        = false;
+  
+  arma_aligned const Mat<out_eT> Q;
+  
+  inline explicit Proxy(const mtGlue<out_eT, T1, T2, glue_type>& A)
+    : Q(A)
+    {
+    arma_extra_debug_sigprint();
+    }
+  
+  arma_inline uword get_n_rows() const { return Q.n_rows; }
+  arma_inline uword get_n_cols() const { return Q.n_cols; }
+  arma_inline uword get_n_elem() const { return Q.n_elem; }
+  
+  arma_inline elem_type operator[] (const uword i)                    const { return Q[i];          }
+  arma_inline elem_type at         (const uword row, const uword col) const { return Q.at(row,col); }
+  
+  arma_inline ea_type get_ea() const { return Q.memptr(); }
+  
+  template<typename eT2>
+  arma_inline bool is_alias(const Mat<eT2>&) const { return false; }
+  };
+
+
+
+//! @}