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/*
* Tiny Vector Matrix Library
* Dense Vector Matrix Libary of Tiny size using Expression Templates
*
* Copyright (C) 2001 - 2003 Olaf Petzold <opetzold@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: TvmetBase.h,v 1.11 2004/06/10 16:36:55 opetzold Exp $
*/
#ifndef TVMET_BASE_H
#define TVMET_BASE_H
#include <iosfwd> // io streams forward declaration
#include <typeinfo> // rtti: used by Xpr.h level printing
#include <cmath> // unary and binary math
#include <cstdlib> // labs
namespace tvmet {
/**
* \class TvmetBase TvmetBase.h "tvmet/TvmetBase.h"
* \brief Base class
* Used for static polymorph call of print_xpr
*/
template<class E> class TvmetBase { };
/**
* \class IndentLevel TvmetBase.h "tvmet/TvmetBase.h"
* \brief Prints the level indent.
*/
class IndentLevel : public TvmetBase< IndentLevel >
{
public:
IndentLevel(int level) : m_level(level) { }
std::ostream& print_xpr(std::ostream& os) const {
for(int i = 0; i != m_level; ++i) os << " ";
return os;
}
private:
int m_level;
};
/**
* \fn operator<<(std::ostream& os, const TvmetBase<E>& e)
* \brief overloaded ostream operator using static polymorphic.
* \ingroup _binary_operator
*/
template<class E>
inline
std::ostream& operator<<(std::ostream& os, const TvmetBase<E>& e) {
static_cast<const E&>(e).print_xpr(os);
return os;
}
/**
* \class dispatch TvmetBase.h "tvmet/TvmetBase.h"
* \brief Class helper to distuingish between e.g. meta
* and loop strategy used.
*/
template<bool> struct dispatch;
/**
* \class dispatch<true> TvmetBase.h "tvmet/TvmetBase.h"
* \brief specialized.
*/
template<> struct dispatch<true> { };
/**
* \class dispatch<false> TvmetBase.h "tvmet/TvmetBase.h"
* \brief specialized.
*/
template<> struct dispatch<false> { };
} // namespace tvmet
#endif // TVMET_BASE_H
// Local Variables:
// mode:C++
// End:
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