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Eurobot2012_Primary

Dependencies:   mbed Eurobot_2012_Primary

tvmet/xpr/UnOperator.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: UnOperator.h,v 1.17 2007-06-23 15:59:00 opetzold Exp $
narshu 25:143b19c1fb05 22 */
narshu 25:143b19c1fb05 23
narshu 25:143b19c1fb05 24 #ifndef TVMET_XPR_UNOPERATOR_H
narshu 25:143b19c1fb05 25 #define TVMET_XPR_UNOPERATOR_H
narshu 25:143b19c1fb05 26
narshu 25:143b19c1fb05 27 namespace tvmet {
narshu 25:143b19c1fb05 28
narshu 25:143b19c1fb05 29
narshu 25:143b19c1fb05 30 /**
narshu 25:143b19c1fb05 31 * \class XprUnOp UnOperator.h "tvmet/xpr/UnOperator.h"
narshu 25:143b19c1fb05 32 * \brief Unary operator working on one subexpression.
narshu 25:143b19c1fb05 33 *
narshu 25:143b19c1fb05 34 * Using the access operator() the unary operation will be evaluated.
narshu 25:143b19c1fb05 35 */
narshu 25:143b19c1fb05 36 template<class UnOp, class E>
narshu 25:143b19c1fb05 37 class XprUnOp
narshu 25:143b19c1fb05 38 : public TvmetBase< XprUnOp<UnOp, E> >
narshu 25:143b19c1fb05 39 {
narshu 25:143b19c1fb05 40 XprUnOp();
narshu 25:143b19c1fb05 41 XprUnOp& operator=(const XprUnOp&);
narshu 25:143b19c1fb05 42
narshu 25:143b19c1fb05 43 public:
narshu 25:143b19c1fb05 44 typedef typename UnOp::value_type value_type;
narshu 25:143b19c1fb05 45
narshu 25:143b19c1fb05 46 public:
narshu 25:143b19c1fb05 47 /** Complexity counter. */
narshu 25:143b19c1fb05 48 enum {
narshu 25:143b19c1fb05 49 ops_expr = E::ops,
narshu 25:143b19c1fb05 50 ops = 1 * ops_expr
narshu 25:143b19c1fb05 51 };
narshu 25:143b19c1fb05 52
narshu 25:143b19c1fb05 53 public:
narshu 25:143b19c1fb05 54 /** Constructor for an expressions. */
narshu 25:143b19c1fb05 55 explicit XprUnOp(const E& e)
narshu 25:143b19c1fb05 56 : m_expr(e)
narshu 25:143b19c1fb05 57 { }
narshu 25:143b19c1fb05 58
narshu 25:143b19c1fb05 59 /** Copy Constructor. Not explicit! */
narshu 25:143b19c1fb05 60 #if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
narshu 25:143b19c1fb05 61 XprUnOp(const XprUnOp& e)
narshu 25:143b19c1fb05 62 : m_expr(e.m_expr)
narshu 25:143b19c1fb05 63 { }
narshu 25:143b19c1fb05 64 #endif
narshu 25:143b19c1fb05 65
narshu 25:143b19c1fb05 66 /** Index operator, evaluates the expression inside. */
narshu 25:143b19c1fb05 67 value_type operator()(std::size_t i) const {
narshu 25:143b19c1fb05 68 return UnOp::apply_on(m_expr(i));
narshu 25:143b19c1fb05 69 }
narshu 25:143b19c1fb05 70
narshu 25:143b19c1fb05 71 /** index operator for arrays/matrices. */
narshu 25:143b19c1fb05 72 value_type operator()(std::size_t i, std::size_t j) const {
narshu 25:143b19c1fb05 73 return UnOp::apply_on(m_expr(i, j));
narshu 25:143b19c1fb05 74 }
narshu 25:143b19c1fb05 75
narshu 25:143b19c1fb05 76 public: // debugging Xpr parse tree
narshu 25:143b19c1fb05 77 void print_xpr(std::ostream& os, std::size_t l=0) const {
narshu 25:143b19c1fb05 78 os << IndentLevel(l++)
narshu 25:143b19c1fb05 79 << "XprUnOp[O="<< ops << ", (O=" << ops_expr << ")]<"
narshu 25:143b19c1fb05 80 << std::endl;
narshu 25:143b19c1fb05 81 UnOp::print_xpr(os, l);
narshu 25:143b19c1fb05 82 m_expr.print_xpr(os, l);
narshu 25:143b19c1fb05 83 os << IndentLevel(--l)
narshu 25:143b19c1fb05 84 << ">," << std::endl;
narshu 25:143b19c1fb05 85 }
narshu 25:143b19c1fb05 86
narshu 25:143b19c1fb05 87 private:
narshu 25:143b19c1fb05 88 const E m_expr;
narshu 25:143b19c1fb05 89 };
narshu 25:143b19c1fb05 90
narshu 25:143b19c1fb05 91
narshu 25:143b19c1fb05 92 } // namespace tvmet
narshu 25:143b19c1fb05 93
narshu 25:143b19c1fb05 94 #endif // TVMET_XPR_UNOPERATOR_H
narshu 25:143b19c1fb05 95
narshu 25:143b19c1fb05 96 // Local Variables:
narshu 25:143b19c1fb05 97 // mode:C++
narshu 25:143b19c1fb05 98 // tab-width:8
narshu 25:143b19c1fb05 99 // End: