iterator.h

来自「高效的c++科学算法库」· C头文件 代码 · 共 85 行

/*                                           -*- c++ -*-
 ******************************
 * Scientific Library (GNU Public Licence)
 *
 * Author: Laurent Deniau, [e-mail]
 *
 * $Id: iterator.h,v 1.1 1998/11/05 12:48:38 paubert Exp $
 *
 * Suggestions: [e-mail]
 * Bugs:   [e-mail]
 *
 * For more information, please see the sl++ Home Page:
 * http://wwwinfo.cern.ch/~ldeniau/sl.html
 *
 ******************************
 */

#ifndef SL_MATRIX_STRUCTURES_ROWMAJOR_ITERATOR_H
#define SL_MATRIX_STRUCTURES_ROWMAJOR_ITERATOR_H

#ifndef SL_MATRIX_STRUCTURES_ROWMAJOR_H
#error <sl/matrix/structures/rowmajor/iterator.h> must be included via <sl/matrix/structures/rowmajor.h>
#endif

#ifdef HAVE_NAMESPACE
namespace sl 
{
#endif


      /** @memo Iterator: Row Major Storage
       */
    class RowMajorIterator : public GeneralIterator {


    public:

        typedef RowMajor structure_t;


          /**@name constructor */
          //@{
          /// constructor
        RowMajorIterator( structure_t const* structure,
                          Index const i =MinIndex,
                          Index const j =MinIndex )
            : GeneralIterator( structure->rows(),
                               structure->cols(),
                               i, j,
                               structure->cols()*i+j ) {}
          //@}

          /**@name member */
          //@{
          /// doc
        void
        operator ++ () {
            if (++my_j > my_p) {
                my_j = MinIndex;
                if (++my_i > my_n) my_ok = false;
            }
            ++my_o;
        }
          /// doc
        void
        incRow() {
            if (++my_i > my_n) my_ok = false;
            else my_o += my_p;
        }
          /// doc
        void
        incCol() {
            if (++my_j > my_p) my_ok = false;
            else ++my_o;
        }
          //@}
    };

#ifdef HAVE_NAMESPACE
}
#endif 

#endif
// SL_MATRIX_STRUCTURES_ROWMAJOR_ROWMAJOR_H