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Derivative.h

Go to the documentation of this file.

#ifndef DERIVATIVE_H
#define DERIVATIVE_H

#include "SundanceDefs.h"

#include "Expr.h"
#include "MultiIndex.h"


namespace Sundance
{

  using namespace TSF;
  using std::string;

  using std::ostream;

  /**
   * \ingroup UserLevelSymbolics
   * Differentiation operator.
   */

  class Derivative : public ExprBase
    {
    public:
      /** \name User-level methods */
      //@{
      /** Construct a differentiation operator of a given direction and order */
      Derivative(int direction, int order = 1);
      //@}

      /** \name Developer-only methods */
      //@{
      /** Construct with a multiindex specifying order and direction */
      Derivative(const MultiIndex& d) : d_(d) {;}

      /** return the multiindex that specifies the order and direction of
       * this derivative operator
       */
      const MultiIndex& multiIndex() const {return d_;}


      // ordering support
      /** */
      virtual int sortPriority() const {return DERIVATIVE;}
      /** */
      virtual bool operator==(const Expr& other) const ;
      /** */
      virtual bool operator<(const Expr& other) const ;

      // RTTI
      /** */
      virtual bool isDerivative() const {return true;}

      // miscellany
      /** */
      virtual ExprBase* clone() const ;
      /** */
      virtual void print(ostream& os, bool paren=false) const ;
      //@}
    private:
      MultiIndex d_;
    };

}
#endif

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Contact:

Kevin Long (krlong@ca.sandia.gov)


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