2 diagonal-storage.hh -- declare Diagonal_storage
4 source file of the Flower Library
6 (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
10 #ifndef DIAGONAL_STORAGE_HH
11 #define DIAGONAL_STORAGE_HH
12 #include "full-storage.hh"
15 Store a matrix with a single-band.
19 Diagonal_storage (i,j) == band_(i, j-i + band_size_i())
21 band_.cols() == 2 * band_size_i () + 1
24 class Diagonal_storage : public Matrix_storage {
28 void set_band_size (int b);
29 int band_size_i() const;
31 void assert_valid (int i, int j) const;
32 bool band_elt_b (int,int) const;
33 void resize_dim (int);
35 virtual void resize_rows (int d) { resize_dim (d); }
36 virtual void resize_cols (int d) { resize_dim (d); }
37 virtual int dim() const;
39 virtual int rows() const ;
40 virtual int cols() const ;
43 virtual void resize (int i, int j);
44 virtual void resize (int i);
46 virtual Real& elem (int i,int j);
47 virtual Real elem (int i, int j) const;
48 Diagonal_storage (Matrix_storage* , int band_i);
52 virtual void insert_row (int k);
53 virtual void delete_row (int k);
54 virtual void delete_column (int k);
57 virtual bool mult_ok (int i, int j) const;
58 virtual void mult_next (int &i, int &j) const ;
59 virtual bool trans_ok (int i, int j) const;
60 virtual void trans_next (int &i, int &j) const;
61 DECLARE_VIRTUAL_COPY_CONS(Diagonal_storage, Matrix_storage);
62 DECLARE_MY_RUNTIME_TYPEINFO;
63 virtual bool try_right_multiply (Matrix_storage * dest, Matrix_storage const *) const;
65 #endif // DIAGONAL_STORAGE_HH