Shuto Naruse / Mbed 2 deprecated Eurobot2012_Secondary

Eurobot2012_Secondary

Fork of Eurobot_2012_Secondary by Shuto Naruse

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

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

Who changed what in which revision?

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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: Null.h,v 1.11 2007-06-23 15:59:00 opetzold Exp $
narshu 1:cc2a9eb0bd55 22 */
narshu 1:cc2a9eb0bd55 23
narshu 1:cc2a9eb0bd55 24 #ifndef TVMET_XPR_NULL_H
narshu 1:cc2a9eb0bd55 25 #define TVMET_XPR_NULL_H
narshu 1:cc2a9eb0bd55 26
narshu 1:cc2a9eb0bd55 27 namespace tvmet {
narshu 1:cc2a9eb0bd55 28
narshu 1:cc2a9eb0bd55 29
narshu 1:cc2a9eb0bd55 30 /**
narshu 1:cc2a9eb0bd55 31 * \class XprNull Null.h "tvmet/xpr/Null.h"
narshu 1:cc2a9eb0bd55 32 * \brief Null object design pattern
narshu 1:cc2a9eb0bd55 33 */
narshu 1:cc2a9eb0bd55 34 class XprNull
narshu 1:cc2a9eb0bd55 35 : public TvmetBase< XprNull >
narshu 1:cc2a9eb0bd55 36 {
narshu 1:cc2a9eb0bd55 37 XprNull& operator=(const XprNull&);
narshu 1:cc2a9eb0bd55 38
narshu 1:cc2a9eb0bd55 39 public:
narshu 1:cc2a9eb0bd55 40 explicit XprNull() { }
narshu 1:cc2a9eb0bd55 41
narshu 1:cc2a9eb0bd55 42 public: // debugging Xpr parse tree
narshu 1:cc2a9eb0bd55 43 void print_xpr(std::ostream& os, std::size_t l=0) const {
narshu 1:cc2a9eb0bd55 44 os << IndentLevel(l) << "XprNull[O=0]" << std::endl;
narshu 1:cc2a9eb0bd55 45 }
narshu 1:cc2a9eb0bd55 46 };
narshu 1:cc2a9eb0bd55 47
narshu 1:cc2a9eb0bd55 48
narshu 1:cc2a9eb0bd55 49 #define TVMET_BINARY_OPERATOR(OP) \
narshu 1:cc2a9eb0bd55 50 template< class T > \
narshu 1:cc2a9eb0bd55 51 inline \
narshu 1:cc2a9eb0bd55 52 T operator OP (const T& lhs, XprNull) { return lhs; }
narshu 1:cc2a9eb0bd55 53
narshu 1:cc2a9eb0bd55 54 TVMET_BINARY_OPERATOR(+)
narshu 1:cc2a9eb0bd55 55 TVMET_BINARY_OPERATOR(-)
narshu 1:cc2a9eb0bd55 56 TVMET_BINARY_OPERATOR(*)
narshu 1:cc2a9eb0bd55 57 TVMET_BINARY_OPERATOR(/)
narshu 1:cc2a9eb0bd55 58
narshu 1:cc2a9eb0bd55 59 #undef TVMET_BINARY_OPERATOR
narshu 1:cc2a9eb0bd55 60
narshu 1:cc2a9eb0bd55 61
narshu 1:cc2a9eb0bd55 62 } // namespace tvmet
narshu 1:cc2a9eb0bd55 63
narshu 1:cc2a9eb0bd55 64 #endif // TVMET_XPR_NULL_H
narshu 1:cc2a9eb0bd55 65
narshu 1:cc2a9eb0bd55 66 // Local Variables:
narshu 1:cc2a9eb0bd55 67 // mode:C++
narshu 1:cc2a9eb0bd55 68 // tab-width:8
narshu 1:cc2a9eb0bd55 69 // End: