PackedParameters.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
 
/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
// $Id$
 
 
#ifndef ATHCONTAINERS_PACKEDPARAMETERS_H
#define ATHCONTAINERS_PACKEDPARAMETERS_H
 
 
#include "AthContainersInterfaces/AuxDataOption.h"
#include <limits>
#include <stdint.h>
 
 
namespace SG {
 

class PackedParameters
{
public:
  PackedParameters();
 

  PackedParameters (uint8_t nbits, uint8_t flags);
 

  template <class T>
  PackedParameters(T);
 

  uint8_t nbits() const;
 
 
  uint8_t nmantissa() const;
 

  uint8_t flags() const;
 

  float scale() const;
 

  bool isSigned() const;
 

  bool isFloat()  const;
 

  bool hasScale() const;
 

  bool rounding() const;
 

  bool setNbits (uint8_t nbits);
 

  bool setNmantissa (uint8_t nmantissa);
 

  bool setScale (float scale);
 

  bool setSigned (bool flag);
 

  bool setRounding (bool flag);
 

  bool setFloat (bool flag);
 

  static bool isValidOption (const AuxDataOption& option);
 

  bool setOption (const AuxDataOption& option);
 

  enum {
    FLAG_IS_SIGNED = (1<<0),
    FLAG_IS_FLOAT  = (1<<1),
    FLAG_HAS_SCALE = (1<<2),
    FLAG_ROUNDING  = (1<<3),
  };
 
 
private:
  uint8_t m_nbits;

  uint8_t m_nmantissa;

  float   m_scale;

  uint8_t m_flags;
};
 
 
} // namespace SG
 
 
#include "AthContainers/PackedParameters.icc"
 
 
#endif // not ATHCONTAINERS_PACKEDPARAMETERS_H