MatrixTranspose.h

00001 /*
00002  * Tiny Vector Matrix Library
00003  * Dense Vector Matrix Libary of Tiny size using Expression Templates
00004  *
00005  * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
00006  *
00007  * This library is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * This library is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU lesser General Public
00018  * License along with this library; if not, write to the Free Software
00019  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00020  *
00021  * $Id: MatrixTranspose.h,v 1.15 2007-06-23 15:59:00 opetzold Exp $
00022  */
00023 
00024 #ifndef TVMET_XPR_MATRIX_TRANSPOSE_H
00025 #define TVMET_XPR_MATRIX_TRANSPOSE_H
00026 
00027 namespace tvmet {
00028 
00029 
00030 /**
00031  * \class XprMatrixTranspose MatrixTranspose.h "tvmet/xpr/MatrixTranspose.h"
00032  * \brief Expression for transpose matrix
00033  */
00034 template<class E>
00035 class XprMatrixTranspose
00036   : public TvmetBase< XprMatrixTranspose<E> >
00037 {
00038   XprMatrixTranspose();
00039   XprMatrixTranspose& operator=(const XprMatrixTranspose&);
00040 
00041 public:
00042   typedef typename E::value_type            value_type;
00043 
00044   /** Complexity counter. */
00045   enum {
00046     ops_expr  = E::ops,
00047     ops       = 1 * ops_expr
00048   };
00049 
00050 public:
00051   /** Constructor. */
00052   explicit XprMatrixTranspose(const E& e)
00053     : m_expr(e)
00054   { }
00055 
00056  /** Copy Constructor. Not explicit! */
00057 #if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
00058   XprMatrixTranspose(const XprMatrixTranspose& e)
00059     : m_expr(e.m_expr)
00060   { }
00061 #endif
00062 
00063   /** index operator for arrays/matrices. This simple swap the index
00064       access for transpose. */
00065   value_type operator()(std::size_t i, std::size_t j) const { return m_expr(j, i); }
00066 
00067 public: // debugging Xpr parse tree
00068   void print_xpr(std::ostream& os, std::size_t l=0) const {
00069     os << IndentLevel(l++)
00070        << "XprMatrixTranspose[O=" << ops << ", (O=" << ops_expr << ")]<"
00071        << std::endl;
00072     m_expr.print_xpr(os, l);
00073     os << IndentLevel(--l)
00074        << ">," << std::endl;
00075   }
00076 
00077 private:
00078   const E                        m_expr;
00079 };
00080 
00081 
00082 } // namespace tvmet
00083 
00084 #endif // TVMET_XPR_MATRIX_TRANSPOSE_H
00085 
00086 // Local Variables:
00087 // mode:C++
00088 // tab-width:8
00089 // End: