CLHEP VERSION Reference Documentation
   
CLHEP Home Page     CLHEP Documentation     CLHEP Bug Reports

GenericFunctions/FunctionTimesParameter.hh
Go to the documentation of this file.
1 // -*- C++ -*-
2 // $Id: FunctionTimesParameter.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
3 //--------------------------FunctionTimesParameter--------------------------//
4 // //
5 // ConstOverFunction, result of multiplying a function and a parameter //
6 // Joe Boudreau, Petar Maksimovic, November 1999 //
7 // //
8 //--------------------------------------------------------------------------//
9 
10 #ifndef FunctionTimesParameter_h
11 #define FunctionTimesParameter_h 1
13 
14 namespace Genfun {
15 
20  class FunctionTimesParameter : public AbsFunction {
21 
23 
24  public:
25 
26  // Constructor
27  FunctionTimesParameter(const AbsParameter *parameter, const AbsFunction *function);
28 
29  // Copy constructor
31 
32  // Destructor
33  virtual ~FunctionTimesParameter();
34 
35  // Retreive function value
36  virtual double operator ()(double argument) const;
37  virtual double operator ()(const Argument & a) const;
38 
39  // Dimensionality
40  virtual unsigned int dimensionality() const;
41 
42  // Derivative.
43  Derivative partial (unsigned int) const;
44 
45  // Does this function have an analytic derivative?
46  virtual bool hasAnalyticDerivative() const {return true;}
47 
48  private:
49 
50  // It is illegal to assign a FunctionTimesParameter
51  const FunctionTimesParameter & operator=(const FunctionTimesParameter &right);
52 
53  const AbsFunction *_function;
54  AbsParameter *_parameter;
55 
56  };
57 } // namespace Genfun
58 #endif