Oskar Weigl / tvmet

This is the Tiny Vector Matrix Expression Templates library found at http://tvmet.sourceforge.net. It is the fastest and most compact matrix lib out there (for < 10x10 matricies). I have done some minor tweaks to make it compile for mbed. For examples and hints on how to use, see: http://tvmet.sourceforge.net/usage.html

Dependents:   Eurobot_2012_Secondary

xpr/MatrixRow.h@0:feb4117d16d8, 2012-03-28 (annotated)

Committer:
madcowswe
Date:
Wed Mar 28 15:53:45 2012 +0000
Revision:
0:feb4117d16d8

        

        
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/*





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 * Tiny Vector Matrix Library





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 * Dense Vector Matrix Libary of Tiny size using Expression Templates





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 *





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 * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>





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 *





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 * This library is free software; you can redistribute it and/or





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 * modify it under the terms of the GNU lesser General Public





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 * License as published by the Free Software Foundation; either





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 * version 2.1 of the License, or (at your option) any later version.





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 *





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 * This library is distributed in the hope that it will be useful,





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 * but WITHOUT ANY WARRANTY; without even the implied warranty of





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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU





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 * lesser General Public License for more details.





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 *





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 * You should have received a copy of the GNU lesser General Public





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 * License along with this library; if not, write to the Free Software





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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA





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 *





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 * $Id: MatrixRow.h,v 1.18 2007-06-23 15:59:00 opetzold Exp $





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 */





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#ifndef TVMET_XPR_MATRIX_ROW_H





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#define TVMET_XPR_MATRIX_ROW_H





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namespace tvmet {





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/**





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 * \class XprMatrixRow MatrixRow.h "tvmet/xpr/MatrixRow.h"





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 * \brief Expression on matrix used for access on the row vector.





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 */





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template<class E, std::size_t Rows, std::size_t Cols>





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class XprMatrixRow





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  : public TvmetBase< XprMatrixRow<E, Rows, Cols> >





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{





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  XprMatrixRow();





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  XprMatrixRow& operator=(const XprMatrixRow&);





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public:





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  typedef typename E::value_type			value_type;





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public:





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  /** Complexity counter. */





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  enum {





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    ops_expr  = E::ops,





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    ops       = ops_expr/Rows	// equal Col accesses





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  };





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public:





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  /** Constructor. */





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  explicit XprMatrixRow(const E& e, std::size_t no)





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    : m_expr(e), m_row(no)





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  {





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    TVMET_RT_CONDITION(no < Rows, "XprMatrixRow Bounce Violation")





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  }





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  /** Copy Constructor. Not explicit! */





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#if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)





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  XprMatrixRow(const XprMatrixRow& rhs)





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    : m_expr(rhs.m_expr), m_row(rhs.m_row)





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  { }





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#endif





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  value_type operator()(std::size_t j) const {





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    TVMET_RT_CONDITION(j < Cols, "XprMatrixRow Bounce Violation")





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    return m_expr(m_row, j);





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  }





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public: // debugging Xpr parse tree





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  void print_xpr(std::ostream& os, std::size_t l=0) const {





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    os << IndentLevel(l++)





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       << "XprMatrixRow[O=" << ops << ", (O=" << ops_expr << ")]<"





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       << std::endl;





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    m_expr.print_xpr(os, l);





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    os << IndentLevel(l)





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       << "R=" << Rows << ", C=" << Cols << std::endl





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       << IndentLevel(--l) << ">"





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       << ((l != 0) ? "," : "") << std::endl;





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  }





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private:





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  const E		 				m_expr;





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  const std::size_t					m_row;





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};





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}





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#endif // TVMET_XPR_MATRIX_ROW_H





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// Local Variables:





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// mode:C++





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// tab-width:8





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// End: