Shuto Naruse / Mbed 2 deprecated Eurobot2012_Secondary

Eurobot2012_Secondary

Fork of Eurobot_2012_Secondary by Shuto Naruse

tvmet/Io.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: Io.h,v 1.8 2007-06-23 15:58:58 opetzold Exp $
narshu 1:cc2a9eb0bd55 22 */
narshu 1:cc2a9eb0bd55 23
narshu 1:cc2a9eb0bd55 24 #ifndef TVMET_IO_H
narshu 1:cc2a9eb0bd55 25 #define TVMET_IO_H
narshu 1:cc2a9eb0bd55 26
narshu 1:cc2a9eb0bd55 27 namespace tvmet {
narshu 1:cc2a9eb0bd55 28
narshu 1:cc2a9eb0bd55 29 /**
narshu 1:cc2a9eb0bd55 30 * \class IoPrintHelper Io.h "tvmet/Io.h"
narshu 1:cc2a9eb0bd55 31 * \brief Determines the number of digits regarding the sign of the
narshu 1:cc2a9eb0bd55 32 * container.
narshu 1:cc2a9eb0bd55 33 * This class is nesessary due to the complex type and the
narshu 1:cc2a9eb0bd55 34 * function min(), which are not defined for this type.
narshu 1:cc2a9eb0bd55 35 * So we have to dispatch between pod and complex types
narshu 1:cc2a9eb0bd55 36 * to get an information about the extra space for signs.
narshu 1:cc2a9eb0bd55 37 */
narshu 1:cc2a9eb0bd55 38 template<class C>
narshu 1:cc2a9eb0bd55 39 class IoPrintHelper {
narshu 1:cc2a9eb0bd55 40 IoPrintHelper();
narshu 1:cc2a9eb0bd55 41 IoPrintHelper(const IoPrintHelper&);
narshu 1:cc2a9eb0bd55 42 IoPrintHelper& operator=(const IoPrintHelper&);
narshu 1:cc2a9eb0bd55 43
narshu 1:cc2a9eb0bd55 44 private:
narshu 1:cc2a9eb0bd55 45 static std::streamsize width(const C& e) {
narshu 1:cc2a9eb0bd55 46 std::streamsize w = static_cast<std::streamsize>(std::log10(max(abs(e)))+1);
narshu 1:cc2a9eb0bd55 47 return w > 0 ? w : 0;
narshu 1:cc2a9eb0bd55 48 }
narshu 1:cc2a9eb0bd55 49
narshu 1:cc2a9eb0bd55 50 public:
narshu 1:cc2a9eb0bd55 51 static std::streamsize width(dispatch<true>, const C& e) {
narshu 1:cc2a9eb0bd55 52 return width(e);
narshu 1:cc2a9eb0bd55 53 }
narshu 1:cc2a9eb0bd55 54 static std::streamsize width(dispatch<false>, const C& e) {
narshu 1:cc2a9eb0bd55 55 std::streamsize w = width(e);
narshu 1:cc2a9eb0bd55 56 if(min(e) < 0) return w+1;
narshu 1:cc2a9eb0bd55 57 else return w;
narshu 1:cc2a9eb0bd55 58 }
narshu 1:cc2a9eb0bd55 59 };
narshu 1:cc2a9eb0bd55 60
narshu 1:cc2a9eb0bd55 61
narshu 1:cc2a9eb0bd55 62 }
narshu 1:cc2a9eb0bd55 63
narshu 1:cc2a9eb0bd55 64 #endif /* TVMET_IO_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: