SundanceDiffOpEvaluator.hpp

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#ifndef SUNDANCE_DIFFOPEVALUATOR_H
#define SUNDANCE_DIFFOPEVALUATOR_H

#include "SundanceDefs.hpp"
#include "SundanceUnaryEvaluator.hpp"
#include "Teuchos_TimeMonitor.hpp"

namespace Sundance 
{
class DiffOp;
class DiscreteFuncElementEvaluator;
    
/**
 *
 */
class DiffOpEvaluator : public UnaryEvaluator<DiffOp>
{
public:
  /** */
  DiffOpEvaluator(const DiffOp* expr,
    const EvalContext& context);

  /** */
  virtual ~DiffOpEvaluator(){;}

  /** */
  virtual void internalEval(const EvalManager& mgr,
    Array<double>& constantResults,
    Array<RCP<EvalVector> >& vectorResults) const ;

  /** We need a specialized resetting method for diff op
   * evaluators that also resets the discrete func evaluators
   * used in the functional chain rule */
  virtual void resetNumCalls() const ;

  /** */
  TEUCHOS_TIMER(evalTimer, "diff op evaluation");
private:

  Set<MultipleDeriv> increasedDerivs(const MultipleDeriv& mu,
    const Set<MultipleDeriv>& W1, int verb) const ;

  Set<MultipleDeriv> backedDerivs(const MultipleDeriv& mu,
    const Set<MultipleDeriv>& W1, int verb) const ;

  Deriv remainder(const MultipleDeriv& big, 
    const MultipleDeriv& little, int verb) const ;

  Array<int> isConstant_;

  Array<int> resultIndices_;
      
  Array<Array<int> > constantMonomials_;

  Array<Array<int> > vectorMonomials_;

  Array<Array<int> > constantFuncCoeffs_;

  Array<Array<int> > vectorFuncCoeffs_;

  Array<const DiscreteFuncElementEvaluator*> funcEvaluators_;

  /** Indices into the function evaluator table for the funcs
   * appearing with constant coeffs in the chain rule */
  Array<Array<int> > constantCoeffFuncIndices_;

  /** Indices into the list of multiindices for the funcs
   * appearing with constant coeffs in the chain rule */
  Array<Array<int> > constantCoeffFuncMi_;

  /** Indices into the function evaluator table for the funcs
   * appearing with vector coeffs in the chain rule */
  Array<Array<int> > vectorCoeffFuncIndices_;

  /** Indices into the list of multiindices for the funcs
   * appearing with vector coeffs in the chain rule */
  Array<Array<int> > vectorCoeffFuncMi_;
}; 
}


#endif

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