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1 // Copyright (C) 2008-2011 NICTA (www.nicta.com.au)
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2 // Copyright (C) 2008-2011 Conrad Sanderson
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3 //
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4 // This file is part of the Armadillo C++ library.
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5 // It is provided without any warranty of fitness
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6 // for any purpose. You can redistribute this file
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7 // and/or modify it under the terms of the GNU
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8 // Lesser General Public License (LGPL) as published
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9 // by the Free Software Foundation, either version 3
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10 // of the License or (at your option) any later version.
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11 // (see http://www.opensource.org/licenses for more info)
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12
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13
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14 //! \addtogroup subview_field
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15 //! @{
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16
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17
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18 //! Class for storing data required to construct or apply operations to a subfield
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19 //! (i.e. where the subfield starts and ends as well as a reference/pointer to the original field),
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20 template<typename oT>
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21 class subview_field
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22 {
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23 public: const field<oT>& f;
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24 protected: field<oT>* f_ptr;
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25
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26 public:
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27
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28 typedef oT object_type;
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29
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30 const uword aux_row1;
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31 const uword aux_col1;
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32
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33 const uword n_rows;
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34 const uword n_cols;
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35 const uword n_elem;
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36
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37
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38 protected:
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39
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40 arma_inline subview_field(const field<oT>& in_f, const uword in_row1, const uword in_col1, const uword in_n_rows, const uword in_n_cols);
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41 arma_inline subview_field( field<oT>& in_f, const uword in_row1, const uword in_col1, const uword in_n_rows, const uword in_n_cols);
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42
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43
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44 public:
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45
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46 inline ~subview_field();
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47
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48 inline void operator= (const field<oT>& x);
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49 inline void operator= (const subview_field& x);
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50
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51 arma_inline oT& operator[](const uword i);
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52 arma_inline const oT& operator[](const uword i) const;
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53
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54 arma_inline oT& operator()(const uword i);
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55 arma_inline const oT& operator()(const uword i) const;
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56
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57 arma_inline oT& at(const uword row, const uword col);
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58 arma_inline const oT& at(const uword row, const uword col) const;
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59
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60 arma_inline oT& operator()(const uword row, const uword col);
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61 arma_inline const oT& operator()(const uword row, const uword col) const;
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62
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63 inline bool check_overlap(const subview_field& x) const;
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64
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65 inline static void extract(field<oT>& out, const subview_field& in);
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66
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67
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68 private:
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69
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70 friend class field<oT>;
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71
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72
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73 subview_field();
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74 //subview_field(const subview_field&);
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75 };
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76
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77
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78 //! @}
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