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Eurobot2012_Secondary

Fork of Eurobot_2012_Secondary by Shuto Naruse

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

Committer:
narshu
Date:
Wed Oct 17 22:25:31 2012 +0000
Revision:
1:cc2a9eb0bd55
Commit before publishing

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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: BinOperator.h,v 1.19 2007-06-23 15:58:59 opetzold Exp $
narshu 1:cc2a9eb0bd55 22 */
narshu 1:cc2a9eb0bd55 23
narshu 1:cc2a9eb0bd55 24 #ifndef TVMET_XPR_BINOPERATOR_H
narshu 1:cc2a9eb0bd55 25 #define TVMET_XPR_BINOPERATOR_H
narshu 1:cc2a9eb0bd55 26
narshu 1:cc2a9eb0bd55 27 #include <tvmet/TypePromotion.h>
narshu 1:cc2a9eb0bd55 28
narshu 1:cc2a9eb0bd55 29 namespace tvmet {
narshu 1:cc2a9eb0bd55 30
narshu 1:cc2a9eb0bd55 31
narshu 1:cc2a9eb0bd55 32 /**
narshu 1:cc2a9eb0bd55 33 * \class XprBinOp BinOperator.h "tvmet/xpr/BinOperator.h"
narshu 1:cc2a9eb0bd55 34 * \brief Binary operators working on two sub expressions.
narshu 1:cc2a9eb0bd55 35 *
narshu 1:cc2a9eb0bd55 36 * On acessing using the index operator() the binary operation will be
narshu 1:cc2a9eb0bd55 37 * evaluated at compile time.
narshu 1:cc2a9eb0bd55 38 */
narshu 1:cc2a9eb0bd55 39 template<class BinOp, class E1, class E2>
narshu 1:cc2a9eb0bd55 40 class XprBinOp
narshu 1:cc2a9eb0bd55 41 : public TvmetBase< XprBinOp<BinOp, E1, E2> >
narshu 1:cc2a9eb0bd55 42 {
narshu 1:cc2a9eb0bd55 43 XprBinOp();
narshu 1:cc2a9eb0bd55 44 XprBinOp& operator=(const XprBinOp&);
narshu 1:cc2a9eb0bd55 45
narshu 1:cc2a9eb0bd55 46 public:
narshu 1:cc2a9eb0bd55 47 typedef typename BinOp::value_type value_type;
narshu 1:cc2a9eb0bd55 48
narshu 1:cc2a9eb0bd55 49 public:
narshu 1:cc2a9eb0bd55 50 /** Complexity counter. */
narshu 1:cc2a9eb0bd55 51 enum {
narshu 1:cc2a9eb0bd55 52 ops_lhs = E1::ops,
narshu 1:cc2a9eb0bd55 53 ops_rhs = E2::ops,
narshu 1:cc2a9eb0bd55 54 ops = 2 * (ops_lhs + ops_rhs) // lhs op rhs
narshu 1:cc2a9eb0bd55 55 };
narshu 1:cc2a9eb0bd55 56
narshu 1:cc2a9eb0bd55 57 public:
narshu 1:cc2a9eb0bd55 58 /** Constructor for two expressions. */
narshu 1:cc2a9eb0bd55 59 explicit XprBinOp(const E1& lhs, const E2& rhs)
narshu 1:cc2a9eb0bd55 60 : m_lhs(lhs), m_rhs(rhs)
narshu 1:cc2a9eb0bd55 61 { }
narshu 1:cc2a9eb0bd55 62
narshu 1:cc2a9eb0bd55 63 /** Copy Constructor. Not explicit! */
narshu 1:cc2a9eb0bd55 64 #if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
narshu 1:cc2a9eb0bd55 65 XprBinOp(const XprBinOp& e)
narshu 1:cc2a9eb0bd55 66 : m_lhs(e.m_lhs), m_rhs(e.m_rhs)
narshu 1:cc2a9eb0bd55 67 { }
narshu 1:cc2a9eb0bd55 68 #endif
narshu 1:cc2a9eb0bd55 69
narshu 1:cc2a9eb0bd55 70 /** Index operator, evaluates the expression inside. */
narshu 1:cc2a9eb0bd55 71 value_type operator()(std::size_t i) const {
narshu 1:cc2a9eb0bd55 72 return BinOp::apply_on(m_lhs(i), m_rhs(i));
narshu 1:cc2a9eb0bd55 73 }
narshu 1:cc2a9eb0bd55 74
narshu 1:cc2a9eb0bd55 75 /** Index operator for arrays/matrices */
narshu 1:cc2a9eb0bd55 76 value_type operator()(std::size_t i, std::size_t j) const {
narshu 1:cc2a9eb0bd55 77 return BinOp::apply_on(m_lhs(i, j), m_rhs(i, j));
narshu 1:cc2a9eb0bd55 78 }
narshu 1:cc2a9eb0bd55 79
narshu 1:cc2a9eb0bd55 80 public: // debugging Xpr parse tree
narshu 1:cc2a9eb0bd55 81 void print_xpr(std::ostream& os, std::size_t l=0) const {
narshu 1:cc2a9eb0bd55 82 os << IndentLevel(l++)
narshu 1:cc2a9eb0bd55 83 << "XprBinOp[O="<< ops << ", (O1=" << ops_lhs << ", O2=" << ops_rhs << ")]<"
narshu 1:cc2a9eb0bd55 84 << std::endl;
narshu 1:cc2a9eb0bd55 85 BinOp::print_xpr(os, l);
narshu 1:cc2a9eb0bd55 86 m_lhs.print_xpr(os, l);
narshu 1:cc2a9eb0bd55 87 m_rhs.print_xpr(os, l);
narshu 1:cc2a9eb0bd55 88 os << IndentLevel(--l)
narshu 1:cc2a9eb0bd55 89 << ">," << std::endl;
narshu 1:cc2a9eb0bd55 90 }
narshu 1:cc2a9eb0bd55 91
narshu 1:cc2a9eb0bd55 92 private:
narshu 1:cc2a9eb0bd55 93 const E1 m_lhs;
narshu 1:cc2a9eb0bd55 94 const E2 m_rhs;
narshu 1:cc2a9eb0bd55 95 };
narshu 1:cc2a9eb0bd55 96
narshu 1:cc2a9eb0bd55 97
narshu 1:cc2a9eb0bd55 98 } // namespace tvmet
narshu 1:cc2a9eb0bd55 99
narshu 1:cc2a9eb0bd55 100 #endif // TVMET_XPR_BINOPERATOR_H
narshu 1:cc2a9eb0bd55 101
narshu 1:cc2a9eb0bd55 102 // Local Variables:
narshu 1:cc2a9eb0bd55 103 // mode:C++
narshu 1:cc2a9eb0bd55 104 // tab-width:8
narshu 1:cc2a9eb0bd55 105 // End: