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00001 // -*- C++ -*- 00002 // $Id: FunctionNegation.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $ 00003 //--------------------------FunctionNegation--------------------------------// 00004 // // 00005 // Class FunctionNegation, output of the unary - operator // 00006 // Joe Boudreau, Petar Maksimovic, November 1999 // 00007 // // 00008 //--------------------------------------------------------------------------// 00009 #ifndef FunctionNegation_h 00010 #define FunctionNegation_h 1 00011 #include "CLHEP/GenericFunctions/AbsFunction.hh" 00012 00013 namespace Genfun { 00014 00019 class FunctionNegation : public AbsFunction { 00020 00021 FUNCTION_OBJECT_DEF(FunctionNegation) 00022 00023 public: 00024 00025 // Constructor 00026 FunctionNegation(const AbsFunction *arg1); 00027 00028 // Copy constructor. 00029 FunctionNegation(const FunctionNegation &right); 00030 00031 // Destructor 00032 virtual ~FunctionNegation(); 00033 00034 // Retreive function value 00035 virtual double operator ()(double argument) const; 00036 virtual double operator ()(const Argument & a) const; 00037 00038 // Dimensionality 00039 virtual unsigned int dimensionality() const; 00040 00041 // Derivative. 00042 Derivative partial (unsigned int) const; 00043 00044 // Does this function have an analytic derivative? 00045 virtual bool hasAnalyticDerivative() const {return true;} 00046 00047 private: 00048 00049 // It is illegal to assign a FunctionNegation 00050 const FunctionNegation & operator=(const FunctionNegation &right); 00051 00052 // The function we're negating. 00053 const AbsFunction *_arg1; 00054 }; 00055 } // namespace Genfun 00056 #endif