/* * Tiny Vector Matrix Library * Dense Vector Matrix Libary of Tiny size using Expression Templates * * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * * $Id: Gemtm.h,v 1.12 2007-06-23 15:58:59 opetzold Exp $ */#ifndef TVMET_META_GEMTM_H#define TVMET_META_GEMTM_H#include <tvmet/xpr/Null.h>namespace tvmet {namespace meta {/** * \class gemtm Gemtm.h "tvmet/meta/Gemtm.h" * \brief Meta class for trans(matrix)-matrix operations, like product. *        using formula *        \f[ *        M_1^{T}\,M_2 *        \f] * \note The number of cols of matrix 2 have to be equal to number of rows of *       matrix 1, since matrix 1 is transposed - the result is a (Cols1 x Cols2) *       matrix. */template<std::size_t Rows1, std::size_t Cols1,	 std::size_t Cols2,	 std::size_t K>class gemtm{private:  gemtm();  gemtm(const gemtm&);  gemtm& operator=(const gemtm&);private:  enum {    doIt = (K != Rows1 - 1) 		/**< recursive counter */  };public:  template<class E1, class E2>  static inline  typename PromoteTraits<    typename E1::value_type,    typename E2::value_type  >::value_type  prod(const E1& lhs, const E2& rhs, std::size_t i, std::size_t j) {    return lhs(K, i) * rhs(K, j)      + gemtm<Rows1 * doIt, Cols1 * doIt,              Cols2 * doIt,              (K+1) * doIt>::prod(lhs, rhs, i, j);  }};/** * \class gemtm<0,0,0,0> Gemtm.h "tvmet/meta/Gemtm.h" * \brief gemtm Specialized for recursion. */template<>class gemtm<0,0,0,0>{  gemtm();  gemtm(const gemtm&);  gemtm& operator=(const gemtm&);public:  template<class E1, class E2>  static inline  XprNull prod(const E1&, const E2&, std::size_t, std::size_t) {    return XprNull();  }};} // namespace meta} // namespace tvmet#endif /* TVMET_META_GEMTM_H */// Local Variables:// mode:C++// tab-width:8// End: