PointHashFunctions.h

 
#pragma once
 
#if defined(PointHashFunctions_RECURSES)
#error Recursive header files inclusion detected in PointHashFunctions.h
#else // defined(PointHashFunctions_RECURSES)
#define PointHashFunctions_RECURSES
 
#if !defined PointHashFunctions_h
#define PointHashFunctions_h
 
// Inclusions
#include <iostream>
#include "DGtal/base/Common.h"
#include "DGtal/kernel/PointVector.h"
#include "DGtal/kernel/NumberTraits.h"
#include "DGtal/base/BasicTypes.h"
#include <functional>
#include <boost/functional/hash.hpp>
 
 
namespace std {
  template <DGtal::Dimension dim,
  typename EuclideanRing,
  typename Container>
  struct hash< DGtal::PointVector<dim,EuclideanRing,Container> >
  {
    size_t operator()(const DGtal::PointVector<dim,EuclideanRing,Container> & p) const
    {
      return boost::hash_range(p.begin(), p.end());
    }
  };
}
 
#ifdef WITH_GMP
namespace std
{
  template <>
  struct hash< DGtal::BigInteger >
  {
    size_t operator()(const DGtal::BigInteger & p) const
    {
      return DGtal::NumberTraits<DGtal::BigInteger>::castToInt64_t( p );
    }
  };
}
//Also defining boost::hash since boost::hash_range needs it.
namespace boost
{
  template <>
  struct hash< DGtal::BigInteger > : std::hash<DGtal::BigInteger>
  { };
}
#endif
 
 
 
#endif // !defined PointHashFunctions_h
 
#undef PointHashFunctions_RECURSES
#endif // else defined(PointHashFunctions_RECURSES)