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CLHEP/GenericFunctions/Exp.hh
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1 // -*- C++ -*-
2 // $Id: Exp.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
3 //---------------------Exp--------------------------------------------------//
4 // //
5 // Class Exp //
6 // Joe Boudreau, Petar Maksimovic, November 1999 //
7 // //
8 //--------------------------------------------------------------------------//
9 #ifndef Exp_h
10 #define Exp_h 1
13 
14 namespace Genfun {
15 
20  class Exp : public AbsFunction {
21 
23 
24  public:
25 
26  // Constructor
27  Exp();
28 
29  // Copy constructor
30  Exp(const Exp &right);
31 
32  // Destructor
33  virtual ~Exp();
34 
35  // Retreive function value
36  virtual double operator ()(double argument) const;
37  virtual double operator ()(const Argument & a) const {return operator() (a[0]);}
38 
39  // Derivative.
40  Derivative partial (unsigned int) const;
41 
42  // Does this function have an analytic derivative?
43  virtual bool hasAnalyticDerivative() const {return true;}
44 
45  private:
46 
47  // It is illegal to assign an adjustable constant
48  const Exp & operator=(const Exp &right);
49 
50  };
51 } // namespace Genfun
52 #endif