CLHEP/GenericFunctions/AbsFunctional.hh

0001 // -*- C++ -*-
0002 // $Id: AbsFunctional.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
0003 // A functional is a mapping from functions to real numbers.
0004 // Here is their base class:
0005 #ifndef _AbsFunctional_h_
0006 #define _AbsFunctional_h_
0007
0008 namespace Genfun {
0009
0010   class AbsFunction;
0011
0012   /**
0013    * @author
0014    * @ingroup genfun
0015    */
0016   class AbsFunctional {
0017
0018   public:
0019
0020     // Constructor
0021     AbsFunctional();
0022
0023     // Destructor:
0024     virtual ~AbsFunctional();
0025
0026     // A functional is a mapping from functions to
0027     // real numbers.  This defines that mapping:
0028     virtual double operator[] (const AbsFunction & function) const = 0;
0029
0030   };
0031 } // namespace Genfun
0032 #endif