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IntegralExpr.h

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#ifndef INTEGRALEXPR_H
#define INTEGRALEXPR_H

#include "SundanceDefs.h"
#include "ExprBase.h"
#include "Expr.h"
#include "CellSet.h"
#include "QuadratureFamily.h"
#include "UnaryExpr.h"

namespace Sundance
{
  using namespace TSF;
  using std::string;

  using std::ostream;

  /**
   * \ingroup LowLevelSymbolics
   * IntegralExpr is a symbolic specification of an integration that is to be
   * carried out over a cell set with a given quadrature rule.
   */

  class IntegralExpr : public UnaryExpr
    {
    public:

      /** Construct with an expression for the integrand, cell set for the domain,
       * and quadrature family */
      IntegralExpr(const CellSet& domain, const Expr& integrand,
                   const QuadratureFamily& quad);

      /** Virtual dtor */
      virtual ~IntegralExpr(){;}

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

      // RTTI
      /** identify self as a IntegralExpr */
      virtual bool isIntegralExpr() const {return true;}

      /** virtual copy ctor */
      virtual ExprBase* clone() const ;

      /** print */
      virtual void print(ostream& os, bool paren=false) const ;
      /** write to string */
      virtual string toString(bool paren=false) const ;
      /** write to XML form */
      virtual XMLObject toXML() const ;

      /** */
      Expr takeConstantUnderIntegral(const Expr& e) const ;

      /** */
      const QuadratureFamily& quad() const {return quad_;}

      /** */
      const Expr& integrand() const {return expr_;}

      /** */
      const CellSet& domain() const {return domain_;}

      /** */
      virtual void differential(const Expr& u, const Expr& du,
                                Expr& result) const ;

      /** */
      virtual void substitute(const Expr& u, const Expr& du,
                              Expr& result) const ;
    private:
      CellSet domain_;
      QuadratureFamily quad_;

    };


}
#endif

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Contact:

Kevin Long (krlong@ca.sandia.gov)


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