ScalarFunctionUnaryMinus.hpp

Go to the documentation of this file.

//  This file is part of ff3d - http://www.freefem.org/ff3d
//  Copyright (C) 2001, 2002, 2003 Stéphane Del Pino

//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2, or (at your option)
//  any later version.

//  This program 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 General Public License for more details.

//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software Foundation,
//  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

//  $Id: ScalarFunctionUnaryMinus.hpp,v 1.3 2006/10/28 12:26:54 delpinux Exp $


#ifndef SCALAR_FUNCTION_UNARY_MINUS_HPP
#define SCALAR_FUNCTION_UNARY_MINUS_HPP

#include <ScalarFunctionBase.hpp>

class ScalarFunctionUnaryMinus
  : public ScalarFunctionBase
{
private:
  ConstReferenceCounting<ScalarFunctionBase>
  __function;                   
  std::ostream& __put(std::ostream& os) const
  {
    os << '-' << *__function;
    return os;
  }

public:
  real_t operator()(const TinyVector<3, real_t>& X) const
  {
    return -(*__function)(X);
  }

  bool canBeSimplified() const
  {
    return false;
  }

  ScalarFunctionUnaryMinus(ConstReferenceCounting<ScalarFunctionBase> function)
    : ScalarFunctionBase(ScalarFunctionBase::unaryMinus),
      __function(function)
  {
    ;
  }

  ScalarFunctionUnaryMinus(const ScalarFunctionUnaryMinus& f)
    : ScalarFunctionBase(f),
      __function(f.__function)
  {
    ;
  }

  ~ScalarFunctionUnaryMinus()
  {
    ;
  }
};

#endif // SCALAR_FUNCTION_UNARY_MINUS_HPP

---