KIM_LengthUnit.hpp

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//
// Copyright (c) 2016--2019, Regents of the University of Minnesota.
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// Contributors:
//    Ryan S. Elliott
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// Release: This file is part of the kim-api-2.1.2 package.
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#ifndef KIM_LENGTH_UNIT_HPP_
#define KIM_LENGTH_UNIT_HPP_

#include <string>

namespace KIM
{
class LengthUnit
{
 public:
  int lengthUnitID;

  LengthUnit();

  LengthUnit(int const id);

  LengthUnit(std::string const & str);

  bool Known() const;

  bool operator==(LengthUnit const & rhs) const;

  bool operator!=(LengthUnit const & rhs) const;

  std::string const & ToString() const;
};  // class LengthUnit

namespace LENGTH_UNIT
{
extern LengthUnit const unused;

extern LengthUnit const A;

extern LengthUnit const Bohr;

extern LengthUnit const cm;

extern LengthUnit const m;

extern LengthUnit const nm;

void GetNumberOfLengthUnits(int * const numberOfLengthUnits);

int GetLengthUnit(int const index, LengthUnit * const lengthUnit);

struct Comparator
{
  bool operator()(LengthUnit const & a, LengthUnit const & b) const
  {
    return a.lengthUnitID < b.lengthUnitID;
  }
};  // struct Comparator
}  // namespace LENGTH_UNIT
}  // namespace KIM

#endif  // KIM_LENGTH_UNIT_HPP_