Documentation generated by
00001 #ifndef DIFFOP_H 00002 #define DIFFOP_H 00003 00004 #include "SundanceDefs.h" 00005 00006 #include "Expr.h" 00007 #include "Derivative.h" 00008 00009 00010 namespace Sundance 00011 { 00012 00013 using namespace TSF; 00014 using std::string; 00015 00016 using std::ostream; 00017 00018 /** 00019 * \ingroup LowLevelSymbolics 00020 * A differential operator of the form (Expr)*(Derivative). 00021 */ 00022 00023 class DiffOp : public ExprBase 00024 { 00025 public: 00026 /** \name Developer-only methods */ 00027 //@{ 00028 /** ctor */ 00029 DiffOp(const Expr& coeff, const Derivative& d); 00030 00031 00032 00033 // ordering support 00034 /** */ 00035 virtual int sortPriority() const {return DIFFOP;} 00036 /** */ 00037 virtual bool operator==(const Expr& other) const ; 00038 /** */ 00039 virtual bool operator<(const Expr& other) const ; 00040 00041 // RTTI 00042 /** */ 00043 virtual bool isDiffOp() const {return true;} 00044 00045 // miscellany 00046 /** */ 00047 virtual ExprBase* clone() const ; 00048 /** */ 00049 virtual void print(ostream& os, bool paren=false) const ; 00050 00051 // DiffOp specific 00052 /** */ 00053 Expr operate(const Expr& operand) const ; 00054 /** */ 00055 Expr leftMultiply(const Expr& lhs) const ; 00056 00057 /** extract the mesh */ 00058 virtual bool getMesh(Mesh& mesh) const ; 00059 //@} 00060 private: 00061 Expr coeff_; 00062 Derivative d_; 00063 }; 00064 00065 } 00066 #endif