ComPackFlatFloat.h

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//--------------------------------------------------------------------------
// File and Version Information:
//      $Id: ComPackFlatFloat.h,v 1.2 2009/12/23 02:59:56 zhangy Exp $
//
// Description:
//      Class ComPackFlatFloat
//      - Maps a float onto an integer range - useful if you know that
//      a value will always be in a certain range.
//
// Environment:
//      Software developed for the BaBar Detector at the SLAC B-Factory.
//
// Author List:
//      D.E.Azzopardi               Originator. 
//
// Copyright Information:
//      Copyright (C) 1999  DESVA Research & Design, for Hedgehog Concepts
// 
// History:
//  Migration for BESIII MDC
//
// Quote:
//      "Do, or do not, there is no try."
//                         - Jedi Master Yoda
//
//--------------------------------------------------------------------------
 
#ifndef COMPACKFLATFLOAT_HH
#define COMPACKFLATFLOAT_HH
 
//
// Bass class includes
//
#include "MdcRecoUtil/ComPackBase.h"
 
class ComPackFlatFloat:public ComPackBase<double> {
 
public:
  ///////////////////
  // Constructors: //
  ///////////////////
  ComPackFlatFloat(const double, const double, size_t); // linearly packed float
 
  ///////////////////
  // Destructor:   //
  ///////////////////
  virtual ~ComPackFlatFloat();
 
  ///////////////////
  // Packers:      //
  ///////////////////
  StatusCode pack (const double, d_ULong &) const;
 
  ///////////////////
  // Unpackers:    //
  ///////////////////
  StatusCode unpack (const d_ULong, double &) const;
 
  ///////////////////
  // Accessors:    //
  ///////////////////
 
  ///////////////////
  // Diagnostic:   //
  ///////////////////
  void testMe ( size_t, double & );
 
private:
  double _pacfac;
  double _upacfac; // precomputed values to speed packing/unpacking
};
 
#endif