numerics/up_function.h

// -*- c++ -*-

// +--------------------------------------------------------------------+
// | This file is part of MathTL - the Mathematical Template Library    |
// |                                                                    |
// | Copyright (c) 2002-2009                                            |
// | Thorsten Raasch, Manuel Werner                                     |
// +--------------------------------------------------------------------+

#ifndef _MATHTL_UP_FUNCTION_H
#define _MATHTL_UP_FUNCTION_H

#include <utils/function.h>
#include <utils/array1d.h>

namespace MathTL
{
  
  class ApproximateUpFunction
    : public Function<1,double>
  {
  public:
    ApproximateUpFunction(const unsigned int k);
    virtual ~ApproximateUpFunction();
    double value(const Point<1,double>& p,
                 const unsigned int component = 0) const;
    void vector_value(const Point<1,double> &p,
                      Vector<double>& values) const;
    
  private:
    unsigned int k_;
    Array1D<double> coeffs;
  };

}  

// include implementation
#include <numerics/up_function.cpp>
  
#endif