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00001 // -*- C++ -*- 00002 // $Id: Rectangular.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $ 00003 //---------------------Rectangular------------------------------------------// 00004 // // 00005 // Class Exponential // 00006 // Joe Boudreau, Petar Maksimovic, November 1999 // 00007 // // 00008 //--------------------------------------------------------------------------// 00009 #ifndef Rectangular_h 00010 #define Rectangular_h 1 00011 #include "CLHEP/GenericFunctions/AbsFunction.hh" 00012 #include "CLHEP/GenericFunctions/Parameter.hh" 00013 namespace Genfun { 00014 00019 class Rectangular : public AbsFunction { 00020 00021 FUNCTION_OBJECT_DEF(Rectangular) 00022 00023 public: 00024 00025 // Constructor 00026 Rectangular(); 00027 00028 // Copy constructor 00029 Rectangular(const Rectangular &right); 00030 00031 // Destructor 00032 virtual ~Rectangular(); 00033 00034 // Retreive function value 00035 virtual double operator ()(double argument) const; 00036 virtual double operator ()(const Argument & a) const {return operator() (a[0]);} 00037 00038 // Get the position of the first discontinuity 00039 const Parameter & x0() const; 00040 Parameter & x0(); 00041 00042 // Get the position of the second discontinuity 00043 const Parameter & x1() const; 00044 Parameter & x1(); 00045 00046 // Get the value of the function at its baseline 00047 const Parameter & baseline() const; 00048 Parameter & baseline(); 00049 00050 // Get the value of the function at its top 00051 const Parameter & height() const; 00052 Parameter & height(); 00053 00054 // Derivative. 00055 Derivative partial (unsigned int) const; 00056 00057 // Does this function have an analytic derivative? 00058 virtual bool hasAnalyticDerivative() const {return true;} 00059 00060 private: 00061 00062 // It is illegal to assign an adjustable constant 00063 const Rectangular & operator=(const Rectangular &right); 00064 00065 // Here is the decay constant 00066 Parameter _x0; 00067 Parameter _x1; 00068 Parameter _baseline; 00069 Parameter _height; 00070 00071 }; 00072 } // namespace Genfun 00073 #endif