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Eurobot2012_Secondary

Fork of Eurobot_2012_Secondary by Shuto Naruse

tvmet/meta/Gemmt.h@1:cc2a9eb0bd55, 2012-10-17 (annotated)

Committer:
narshu
Date:
Wed Oct 17 22:25:31 2012 +0000
Revision:
1:cc2a9eb0bd55
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narshu 1:cc2a9eb0bd55 1 /*
narshu 1:cc2a9eb0bd55 2 * Tiny Vector Matrix Library
narshu 1:cc2a9eb0bd55 3 * Dense Vector Matrix Libary of Tiny size using Expression Templates
narshu 1:cc2a9eb0bd55 4 *
narshu 1:cc2a9eb0bd55 5 * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
narshu 1:cc2a9eb0bd55 6 *
narshu 1:cc2a9eb0bd55 7 * This library is free software; you can redistribute it and/or
narshu 1:cc2a9eb0bd55 8 * modify it under the terms of the GNU Lesser General Public
narshu 1:cc2a9eb0bd55 9 * License as published by the Free Software Foundation; either
narshu 1:cc2a9eb0bd55 10 * version 2.1 of the License, or (at your option) any later version.
narshu 1:cc2a9eb0bd55 11 *
narshu 1:cc2a9eb0bd55 12 * This library is distributed in the hope that it will be useful,
narshu 1:cc2a9eb0bd55 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
narshu 1:cc2a9eb0bd55 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
narshu 1:cc2a9eb0bd55 15 * Lesser General Public License for more details.
narshu 1:cc2a9eb0bd55 16 *
narshu 1:cc2a9eb0bd55 17 * You should have received a copy of the GNU Lesser General Public
narshu 1:cc2a9eb0bd55 18 * License along with this library; if not, write to the Free Software
narshu 1:cc2a9eb0bd55 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
narshu 1:cc2a9eb0bd55 20 *
narshu 1:cc2a9eb0bd55 21 * $Id: Gemmt.h,v 1.13 2007-06-23 15:58:59 opetzold Exp $
narshu 1:cc2a9eb0bd55 22 */
narshu 1:cc2a9eb0bd55 23
narshu 1:cc2a9eb0bd55 24 #ifndef TVMET_META_GEMMT_H
narshu 1:cc2a9eb0bd55 25 #define TVMET_META_GEMMT_H
narshu 1:cc2a9eb0bd55 26
narshu 1:cc2a9eb0bd55 27 #include <tvmet/xpr/Null.h>
narshu 1:cc2a9eb0bd55 28
narshu 1:cc2a9eb0bd55 29 namespace tvmet {
narshu 1:cc2a9eb0bd55 30
narshu 1:cc2a9eb0bd55 31 namespace meta {
narshu 1:cc2a9eb0bd55 32
narshu 1:cc2a9eb0bd55 33
narshu 1:cc2a9eb0bd55 34 /**
narshu 1:cc2a9eb0bd55 35 * \class gemmt Gemmt.h "tvmet/meta/Gemmt.h"
narshu 1:cc2a9eb0bd55 36 * \brief Meta class for product matrix-transpose(matrix) operations.
narshu 1:cc2a9eb0bd55 37 * using formula
narshu 1:cc2a9eb0bd55 38 * \f[
narshu 1:cc2a9eb0bd55 39 * M_1\,M_2^{T}
narshu 1:cc2a9eb0bd55 40 * \f]
narshu 1:cc2a9eb0bd55 41 * \note The rows of matrix 2 have to be equal to cols of matrix 1. The result
narshu 1:cc2a9eb0bd55 42 * is a rows1 * cols2 matrix.
narshu 1:cc2a9eb0bd55 43 */
narshu 1:cc2a9eb0bd55 44 template<std::size_t Rows1, std::size_t Cols1,
narshu 1:cc2a9eb0bd55 45 std::size_t Cols2,
narshu 1:cc2a9eb0bd55 46 std::size_t K>
narshu 1:cc2a9eb0bd55 47 class gemmt
narshu 1:cc2a9eb0bd55 48 {
narshu 1:cc2a9eb0bd55 49 gemmt();
narshu 1:cc2a9eb0bd55 50 gemmt(const gemmt&);
narshu 1:cc2a9eb0bd55 51 gemmt& operator=(const gemmt&);
narshu 1:cc2a9eb0bd55 52
narshu 1:cc2a9eb0bd55 53 private:
narshu 1:cc2a9eb0bd55 54 enum {
narshu 1:cc2a9eb0bd55 55 doIt = (K != Cols2 - 1) /**< recursive counter */
narshu 1:cc2a9eb0bd55 56 };
narshu 1:cc2a9eb0bd55 57
narshu 1:cc2a9eb0bd55 58 public:
narshu 1:cc2a9eb0bd55 59 template<class E1, class E2>
narshu 1:cc2a9eb0bd55 60 static inline
narshu 1:cc2a9eb0bd55 61 typename PromoteTraits<
narshu 1:cc2a9eb0bd55 62 typename E1::value_type,
narshu 1:cc2a9eb0bd55 63 typename E2::value_type
narshu 1:cc2a9eb0bd55 64 >::value_type
narshu 1:cc2a9eb0bd55 65 prod(const E1& lhs, const E2& rhs, std::size_t i, std::size_t j) {
narshu 1:cc2a9eb0bd55 66 return lhs(i, K) * rhs(j, K)
narshu 1:cc2a9eb0bd55 67 + gemmt<Rows1 * doIt, Cols1 * doIt,
narshu 1:cc2a9eb0bd55 68 Cols2 * doIt,
narshu 1:cc2a9eb0bd55 69 (K+1) * doIt>::prod(lhs, rhs, i, j);
narshu 1:cc2a9eb0bd55 70 }
narshu 1:cc2a9eb0bd55 71 };
narshu 1:cc2a9eb0bd55 72
narshu 1:cc2a9eb0bd55 73
narshu 1:cc2a9eb0bd55 74 /**
narshu 1:cc2a9eb0bd55 75 * \class gemmt<0,0,0,0> Gemmt.h "tvmet/meta/Gemmt.h"
narshu 1:cc2a9eb0bd55 76 * \brief gemmt Specialized for recursion.
narshu 1:cc2a9eb0bd55 77 */
narshu 1:cc2a9eb0bd55 78 template<>
narshu 1:cc2a9eb0bd55 79 class gemmt<0,0,0,0>
narshu 1:cc2a9eb0bd55 80 {
narshu 1:cc2a9eb0bd55 81 gemmt();
narshu 1:cc2a9eb0bd55 82 gemmt(const gemmt&);
narshu 1:cc2a9eb0bd55 83 gemmt& operator=(const gemmt&);
narshu 1:cc2a9eb0bd55 84
narshu 1:cc2a9eb0bd55 85 public:
narshu 1:cc2a9eb0bd55 86 template<class E1, class E2>
narshu 1:cc2a9eb0bd55 87 static inline
narshu 1:cc2a9eb0bd55 88 XprNull prod(const E1&, const E2&, std::size_t, std::size_t) {
narshu 1:cc2a9eb0bd55 89 return XprNull();
narshu 1:cc2a9eb0bd55 90 }
narshu 1:cc2a9eb0bd55 91 };
narshu 1:cc2a9eb0bd55 92
narshu 1:cc2a9eb0bd55 93
narshu 1:cc2a9eb0bd55 94 } // namespace meta
narshu 1:cc2a9eb0bd55 95
narshu 1:cc2a9eb0bd55 96 } // namespace tvmet
narshu 1:cc2a9eb0bd55 97
narshu 1:cc2a9eb0bd55 98 #endif /* TVMET_META_GEMMT_H */
narshu 1:cc2a9eb0bd55 99
narshu 1:cc2a9eb0bd55 100 // Local Variables:
narshu 1:cc2a9eb0bd55 101 // mode:C++
narshu 1:cc2a9eb0bd55 102 // tab-width:8
narshu 1:cc2a9eb0bd55 103 // End: