Oskar Weigl / tvmet

This is the Tiny Vector Matrix Expression Templates library found at http://tvmet.sourceforge.net. It is the fastest and most compact matrix lib out there (for < 10x10 matricies). I have done some minor tweaks to make it compile for mbed. For examples and hints on how to use, see: http://tvmet.sourceforge.net/usage.html

Dependents:   Eurobot_2012_Secondary

Io.h@0:feb4117d16d8, 2012-03-28 (annotated)

Committer:
madcowswe
Date:
Wed Mar 28 15:53:45 2012 +0000
Revision:
0:feb4117d16d8

        

        
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/*





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 * Tiny Vector Matrix Library





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 * Dense Vector Matrix Libary of Tiny size using Expression Templates





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 *





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 * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>





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 *





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 * This library is free software; you can redistribute it and/or





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 * modify it under the terms of the GNU Lesser General Public





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 * License as published by the Free Software Foundation; either





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 * version 2.1 of the License, or (at your option) any later version.





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 *





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 * This library is distributed in the hope that it will be useful,





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 * but WITHOUT ANY WARRANTY; without even the implied warranty of





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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU





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 * Lesser General Public License for more details.





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 *





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 * You should have received a copy of the GNU Lesser General Public





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 * License along with this library; if not, write to the Free Software





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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA





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 *





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 * $Id: Io.h,v 1.8 2007-06-23 15:58:58 opetzold Exp $





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 */





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#ifndef TVMET_IO_H





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#define TVMET_IO_H





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namespace tvmet {





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/**





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 * \class IoPrintHelper Io.h "tvmet/Io.h"





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 * \brief Determines the number of digits regarding the sign of the





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 *        container.





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 *        This class is nesessary due to the complex type and the





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 *        function min(), which are not defined for this type.





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 *        So we have to dispatch between pod and complex types





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 *        to get an information about the extra space for signs.





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 */





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template<class C>





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class IoPrintHelper {





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  IoPrintHelper();





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  IoPrintHelper(const IoPrintHelper&);





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  IoPrintHelper& operator=(const IoPrintHelper&);





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private:





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  static std::streamsize width(const C& e) {





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    std::streamsize w = static_cast<std::streamsize>(std::log10(max(abs(e)))+1);





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    return w > 0 ? w : 0;





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  }





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public:





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  static std::streamsize width(dispatch<true>, const C& e) {





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    return width(e);





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  }





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  static std::streamsize width(dispatch<false>, const C& e) {





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    std::streamsize w = width(e);





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    if(min(e) < 0) return w+1;





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    else return w;





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  }





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};





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}





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#endif /* TVMET_IO_H */





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// Local Variables:





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// mode:C++





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// tab-width:8





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// End: