CLHEP 2.4.7.1
C++ Class Library for High Energy Physics
Power.hh
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1// -*- C++ -*-
2// $Id: Power.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
3//----------------------Power-----------------------------------------------//
4// //
5// Class Power //
6// Joe Boudreau, Petar Maksimovic, Nov. 1999 //
7// //
8// Power(x) returns x^n //
9//--------------------------------------------------------------------------//
10#ifndef Power_h
11#define Power_h 1
13namespace Genfun {
14
19 class Power : public AbsFunction {
20
22
23 public:
24
25 // Constructor
26 Power(double n);
27 Power(int n);
28 Power(unsigned int n);
29
30 // Copy constructor
31 Power(const Power &right);
32
33 // Destructor
34 virtual ~Power();
35
36 // Retrieve function value
37
38 virtual double operator ()(double argument) const override;
39 virtual double operator ()(const Argument & a) const override {return operator() (a[0]);}
40
41 // Derivative.
42 Derivative partial (unsigned int) const override;
43
44 // Does this function have an analytic derivative?
45 virtual bool hasAnalyticDerivative() const override {return true;}
46
47 private:
48
49 // It is illegal to assign a fixed constant
50 const Power & operator=(const Power &right);
51
52 double _doublePower; // power (as a double)
53 int _intPower; // power (as an integer)
54 bool _asInteger; // flag: object constructed with integer argument
55
56 };
57} // namespace Genfun
58#endif
#define FUNCTION_OBJECT_DEF(classname)
Power(double n)
virtual ~Power()
virtual bool hasAnalyticDerivative() const override
Definition Power.hh:45
Power(const Power &right)
Derivative partial(unsigned int) const override
virtual double operator()(double argument) const override
Power(unsigned int n)
Definition Abs.hh:14
FunctionNoop Derivative