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Eurobot2012_Primary

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tvmet/xpr/BinOperator.h@26:0995f61cb7b8, 2012-10-17 (annotated)

Committer:
narshu
Date:
Wed Oct 17 22:22:47 2012 +0000
Revision:
26:0995f61cb7b8
Parent:
25:143b19c1fb05 
Eurobot 2012 Primary;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
narshu 25:143b19c1fb05 1 /*
narshu 25:143b19c1fb05 2 * Tiny Vector Matrix Library
narshu 25:143b19c1fb05 3 * Dense Vector Matrix Libary of Tiny size using Expression Templates
narshu 25:143b19c1fb05 4 *
narshu 25:143b19c1fb05 5 * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
narshu 25:143b19c1fb05 6 *
narshu 25:143b19c1fb05 7 * This library is free software; you can redistribute it and/or
narshu 25:143b19c1fb05 8 * modify it under the terms of the GNU Lesser General Public
narshu 25:143b19c1fb05 9 * License as published by the Free Software Foundation; either
narshu 25:143b19c1fb05 10 * version 2.1 of the License, or (at your option) any later version.
narshu 25:143b19c1fb05 11 *
narshu 25:143b19c1fb05 12 * This library is distributed in the hope that it will be useful,
narshu 25:143b19c1fb05 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
narshu 25:143b19c1fb05 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
narshu 25:143b19c1fb05 15 * Lesser General Public License for more details.
narshu 25:143b19c1fb05 16 *
narshu 25:143b19c1fb05 17 * You should have received a copy of the GNU Lesser General Public
narshu 25:143b19c1fb05 18 * License along with this library; if not, write to the Free Software
narshu 25:143b19c1fb05 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
narshu 25:143b19c1fb05 20 *
narshu 25:143b19c1fb05 21 * $Id: BinOperator.h,v 1.19 2007-06-23 15:58:59 opetzold Exp $
narshu 25:143b19c1fb05 22 */
narshu 25:143b19c1fb05 23
narshu 25:143b19c1fb05 24 #ifndef TVMET_XPR_BINOPERATOR_H
narshu 25:143b19c1fb05 25 #define TVMET_XPR_BINOPERATOR_H
narshu 25:143b19c1fb05 26
narshu 25:143b19c1fb05 27 #include <tvmet/TypePromotion.h>
narshu 25:143b19c1fb05 28
narshu 25:143b19c1fb05 29 namespace tvmet {
narshu 25:143b19c1fb05 30
narshu 25:143b19c1fb05 31
narshu 25:143b19c1fb05 32 /**
narshu 25:143b19c1fb05 33 * \class XprBinOp BinOperator.h "tvmet/xpr/BinOperator.h"
narshu 25:143b19c1fb05 34 * \brief Binary operators working on two sub expressions.
narshu 25:143b19c1fb05 35 *
narshu 25:143b19c1fb05 36 * On acessing using the index operator() the binary operation will be
narshu 25:143b19c1fb05 37 * evaluated at compile time.
narshu 25:143b19c1fb05 38 */
narshu 25:143b19c1fb05 39 template<class BinOp, class E1, class E2>
narshu 25:143b19c1fb05 40 class XprBinOp
narshu 25:143b19c1fb05 41 : public TvmetBase< XprBinOp<BinOp, E1, E2> >
narshu 25:143b19c1fb05 42 {
narshu 25:143b19c1fb05 43 XprBinOp();
narshu 25:143b19c1fb05 44 XprBinOp& operator=(const XprBinOp&);
narshu 25:143b19c1fb05 45
narshu 25:143b19c1fb05 46 public:
narshu 25:143b19c1fb05 47 typedef typename BinOp::value_type value_type;
narshu 25:143b19c1fb05 48
narshu 25:143b19c1fb05 49 public:
narshu 25:143b19c1fb05 50 /** Complexity counter. */
narshu 25:143b19c1fb05 51 enum {
narshu 25:143b19c1fb05 52 ops_lhs = E1::ops,
narshu 25:143b19c1fb05 53 ops_rhs = E2::ops,
narshu 25:143b19c1fb05 54 ops = 2 * (ops_lhs + ops_rhs) // lhs op rhs
narshu 25:143b19c1fb05 55 };
narshu 25:143b19c1fb05 56
narshu 25:143b19c1fb05 57 public:
narshu 25:143b19c1fb05 58 /** Constructor for two expressions. */
narshu 25:143b19c1fb05 59 explicit XprBinOp(const E1& lhs, const E2& rhs)
narshu 25:143b19c1fb05 60 : m_lhs(lhs), m_rhs(rhs)
narshu 25:143b19c1fb05 61 { }
narshu 25:143b19c1fb05 62
narshu 25:143b19c1fb05 63 /** Copy Constructor. Not explicit! */
narshu 25:143b19c1fb05 64 #if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
narshu 25:143b19c1fb05 65 XprBinOp(const XprBinOp& e)
narshu 25:143b19c1fb05 66 : m_lhs(e.m_lhs), m_rhs(e.m_rhs)
narshu 25:143b19c1fb05 67 { }
narshu 25:143b19c1fb05 68 #endif
narshu 25:143b19c1fb05 69
narshu 25:143b19c1fb05 70 /** Index operator, evaluates the expression inside. */
narshu 25:143b19c1fb05 71 value_type operator()(std::size_t i) const {
narshu 25:143b19c1fb05 72 return BinOp::apply_on(m_lhs(i), m_rhs(i));
narshu 25:143b19c1fb05 73 }
narshu 25:143b19c1fb05 74
narshu 25:143b19c1fb05 75 /** Index operator for arrays/matrices */
narshu 25:143b19c1fb05 76 value_type operator()(std::size_t i, std::size_t j) const {
narshu 25:143b19c1fb05 77 return BinOp::apply_on(m_lhs(i, j), m_rhs(i, j));
narshu 25:143b19c1fb05 78 }
narshu 25:143b19c1fb05 79
narshu 25:143b19c1fb05 80 public: // debugging Xpr parse tree
narshu 25:143b19c1fb05 81 void print_xpr(std::ostream& os, std::size_t l=0) const {
narshu 25:143b19c1fb05 82 os << IndentLevel(l++)
narshu 25:143b19c1fb05 83 << "XprBinOp[O="<< ops << ", (O1=" << ops_lhs << ", O2=" << ops_rhs << ")]<"
narshu 25:143b19c1fb05 84 << std::endl;
narshu 25:143b19c1fb05 85 BinOp::print_xpr(os, l);
narshu 25:143b19c1fb05 86 m_lhs.print_xpr(os, l);
narshu 25:143b19c1fb05 87 m_rhs.print_xpr(os, l);
narshu 25:143b19c1fb05 88 os << IndentLevel(--l)
narshu 25:143b19c1fb05 89 << ">," << std::endl;
narshu 25:143b19c1fb05 90 }
narshu 25:143b19c1fb05 91
narshu 25:143b19c1fb05 92 private:
narshu 25:143b19c1fb05 93 const E1 m_lhs;
narshu 25:143b19c1fb05 94 const E2 m_rhs;
narshu 25:143b19c1fb05 95 };
narshu 25:143b19c1fb05 96
narshu 25:143b19c1fb05 97
narshu 25:143b19c1fb05 98 } // namespace tvmet
narshu 25:143b19c1fb05 99
narshu 25:143b19c1fb05 100 #endif // TVMET_XPR_BINOPERATOR_H
narshu 25:143b19c1fb05 101
narshu 25:143b19c1fb05 102 // Local Variables:
narshu 25:143b19c1fb05 103 // mode:C++
narshu 25:143b19c1fb05 104 // tab-width:8
narshu 25:143b19c1fb05 105 // End: