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tvmet/xpr/Literal.h@9:08552997b544, 2012-11-14 (annotated)

Committer:
madcowswe
Date:
Wed Nov 14 17:15:53 2012 +0000
Revision:
9:08552997b544
Parent:
1:6799c07fe510 
Added an important comment

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sv 1:6799c07fe510 1 /*
sv 1:6799c07fe510 2 * Tiny Vector Matrix Library
sv 1:6799c07fe510 3 * Dense Vector Matrix Libary of Tiny size using Expression Templates
sv 1:6799c07fe510 4 *
sv 1:6799c07fe510 5 * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
sv 1:6799c07fe510 6 *
sv 1:6799c07fe510 7 * This library is free software; you can redistribute it and/or
sv 1:6799c07fe510 8 * modify it under the terms of the GNU Lesser General Public
sv 1:6799c07fe510 9 * License as published by the Free Software Foundation; either
sv 1:6799c07fe510 10 * version 2.1 of the License, or (at your option) any later version.
sv 1:6799c07fe510 11 *
sv 1:6799c07fe510 12 * This library is distributed in the hope that it will be useful,
sv 1:6799c07fe510 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
sv 1:6799c07fe510 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
sv 1:6799c07fe510 15 * Lesser General Public License for more details.
sv 1:6799c07fe510 16 *
sv 1:6799c07fe510 17 * You should have received a copy of the GNU Lesser General Public
sv 1:6799c07fe510 18 * License along with this library; if not, write to the Free Software
sv 1:6799c07fe510 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
sv 1:6799c07fe510 20 *
sv 1:6799c07fe510 21 * $Id: Literal.h,v 1.13 2007-06-23 15:58:59 opetzold Exp $
sv 1:6799c07fe510 22 */
sv 1:6799c07fe510 23
sv 1:6799c07fe510 24 #ifndef TVMET_XPR_LITERAL_H
sv 1:6799c07fe510 25 #define TVMET_XPR_LITERAL_H
sv 1:6799c07fe510 26
sv 1:6799c07fe510 27 namespace tvmet {
sv 1:6799c07fe510 28
sv 1:6799c07fe510 29
sv 1:6799c07fe510 30 /**
sv 1:6799c07fe510 31 * \class XprLiteral Literal.h "tvmet/xpr/Literal.h"
sv 1:6799c07fe510 32 * \brief Specify literals like scalars into the expression.
sv 1:6799c07fe510 33 * This expression is used for vectors and matrices - the
sv 1:6799c07fe510 34 * decision is done by the access operator.
sv 1:6799c07fe510 35 */
sv 1:6799c07fe510 36 template<class T>
sv 1:6799c07fe510 37 class XprLiteral
sv 1:6799c07fe510 38 : public TvmetBase< XprLiteral<T> >
sv 1:6799c07fe510 39 {
sv 1:6799c07fe510 40 XprLiteral();
sv 1:6799c07fe510 41 XprLiteral& operator=(const XprLiteral&);
sv 1:6799c07fe510 42
sv 1:6799c07fe510 43 public:
sv 1:6799c07fe510 44 typedef T value_type;
sv 1:6799c07fe510 45
sv 1:6799c07fe510 46 public:
sv 1:6799c07fe510 47 /** Complexity counter. */
sv 1:6799c07fe510 48 enum {
sv 1:6799c07fe510 49 ops = 1
sv 1:6799c07fe510 50 };
sv 1:6799c07fe510 51
sv 1:6799c07fe510 52 public:
sv 1:6799c07fe510 53 /** Constructor by value for literals . */
sv 1:6799c07fe510 54 explicit XprLiteral(value_type value)
sv 1:6799c07fe510 55 : m_data(value)
sv 1:6799c07fe510 56 { }
sv 1:6799c07fe510 57
sv 1:6799c07fe510 58 /** Copy Constructor. Not explicit! */
sv 1:6799c07fe510 59 #if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
sv 1:6799c07fe510 60 XprLiteral(const XprLiteral& e)
sv 1:6799c07fe510 61 : m_data(e.m_data)
sv 1:6799c07fe510 62 { }
sv 1:6799c07fe510 63 #endif
sv 1:6799c07fe510 64
sv 1:6799c07fe510 65 /** Index operator, gives the value for vectors. */
sv 1:6799c07fe510 66 value_type operator()(std::size_t) const { return m_data; }
sv 1:6799c07fe510 67
sv 1:6799c07fe510 68 /** Index operator for arrays/matrices. */
sv 1:6799c07fe510 69 value_type operator()(std::size_t, std::size_t) const { return m_data; }
sv 1:6799c07fe510 70
sv 1:6799c07fe510 71 public: // debugging Xpr parse tree
sv 1:6799c07fe510 72 void print_xpr(std::ostream& os, std::size_t l=0) const {
sv 1:6799c07fe510 73 os << IndentLevel(l++) << "XprLiteral[O=" << ops << "]<T="
sv 1:6799c07fe510 74 << typeid(value_type).name()
sv 1:6799c07fe510 75 << ">," << std::endl;
sv 1:6799c07fe510 76 }
sv 1:6799c07fe510 77
sv 1:6799c07fe510 78 private:
sv 1:6799c07fe510 79 const value_type m_data;
sv 1:6799c07fe510 80 };
sv 1:6799c07fe510 81
sv 1:6799c07fe510 82
sv 1:6799c07fe510 83 } // namespace tvmet
sv 1:6799c07fe510 84
sv 1:6799c07fe510 85 #endif // TVMET_XPR_LITERAL_H
sv 1:6799c07fe510 86
sv 1:6799c07fe510 87 // Local Variables:
sv 1:6799c07fe510 88 // mode:C++
sv 1:6799c07fe510 89 // tab-width:8
sv 1:6799c07fe510 90 // End: