Pressure.h

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// $Id: Pressure.h,v 1.4 2010/03/04 21:17:27 sjcm Exp $

#ifndef GCP_UTIL_PRESSURE_H
#define GCP_UTIL_PRESSURE_H

#include <sstream>

#include "gcp/util/common/ConformableQuantity.h"

namespace gcp {
  namespace util {

    class Pressure : public ConformableQuantity {
    public:
      
      class InchesHg {};
      class MilliBar {};
      class Torr {};

      Pressure();
      Pressure(const InchesHg& unit, double inchesHg);
      Pressure(const MilliBar& unit, double mBar);
      Pressure(const Torr& unit,     double torr);

      virtual ~Pressure();

      // Scale factors used by this class

      static const double mBarPerInHg_;

      void setMilliBar(double mBar);
      void setInchesHg(double inchesHg);
      void setInHg(double inchesHg);
      void setTorr(double torr);

      double milliBar();
      double inchesHg();
      double inHg();
      double torr();

      friend std::ostream& operator<<(std::ostream& os, Pressure& pressure);

    private:

      double mBar_;

    }; // End class Pressure

    std::ostream& operator<<(std::ostream& os, Pressure& pressure);

  } // End namespace util
} // End namespace gcp



#endif // End #ifndef GCP_UTIL_PRESSURE_H