CLHEP/GenericFunctions/Cos.hh

0001 // -*- C++ -*-
0002 // $Id: Cos.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
0003 //---------------------Cos--------------------------------------------------//
0004 //                                                                          //
0005 // Class Cos                                                                //
0006 // Joe Boudreau, Petar Maksimovic, November 1999                            //
0007 //                                                                          //
0008 //--------------------------------------------------------------------------//
0009 #ifndef Cos_h
0010 #define Cos_h 1
0011 #include "CLHEP/GenericFunctions/AbsFunction.hh"
0012
0013 namespace Genfun {
0014
0015   /**
0016    * @author
0017    * @ingroup genfun
0018    */
0019   class Cos : public AbsFunction  {
0020
0021     FUNCTION_OBJECT_DEF(Cos)
0022
0023       public:
0024
0025     // Constructor
0026     Cos();
0027
0028     // Destructor
0029     virtual ~Cos();
0030
0031     // Copy constructor
0032     Cos(const Cos &right);
0033
0034     // Retreive function value
0035     virtual double operator ()(double argument) const override;
0036     virtual double operator ()(const Argument & a) const override {return operator() (a[0]);}
0037
0038     // Derivative.
0039     Derivative partial (unsigned int) const override;
0040
0041     // Does this function have an analytic derivative?
0042     virtual bool hasAnalyticDerivative() const override {return true;}
0043
0044   private:
0045
0046     // It is illegal to assign a Cosine
0047     const Cos & operator=(const Cos &right);
0048
0049   };
0050 } // namespace Genfun
0051 #endif