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CLHEP/GenericFunctions/ConstPlusFunction.hh
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1// -*- C++ -*-
2// $Id: ConstPlusFunction.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
3//--------------------------ConstPlusFunction-------------------------------//
4// //
5// ConstPlusFunction, result of adding a function and a constant //
6// Joe Boudreau, Petar Maksimovic, November 1999 //
7// //
8//--------------------------------------------------------------------------//
9
10#ifndef ConstPlusFunction_h
11#define ConstPlusFunction_h 1
13
14namespace Genfun {
15
21
23
24 public:
25
26 // Constructor
27 ConstPlusFunction(double constant, const AbsFunction *arg);
28
29 // Copy constructor
31
32 // Destructor
33 virtual ~ConstPlusFunction();
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 ConstPlusFunction
51 const ConstPlusFunction & operator=(const ConstPlusFunction &right);
52
53 double _constant;
54 const AbsFunction *_arg;
55 };
56} // namespace Genfun
57#endif
#define FUNCTION_OBJECT_DEF(classname)
virtual unsigned int dimensionality() const
Derivative partial(unsigned int) const
virtual double operator()(double argument) const