parallel_conversion_utils.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2014 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner

// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



#ifndef LIBMESH_PARALLEL_CONVERSION_UTILS_H
#define LIBMESH_PARALLEL_CONVERSION_UTILS_H

// Local includes
#include "libmesh/libmesh_common.h"

#ifdef LIBMESH_HAVE_LIBHILBERT
#include "hilbert.h"
#endif

// C++ includes
#include <vector>

namespace libMesh
{



//--------------------------------------------------------------------------
namespace Parallel {
namespace Utils {

template <typename KeyType>
inline
bool is_sorted (const std::vector<KeyType>& v)
{
  if (v.empty())
    return true;

  for (unsigned int i=1; i<v.size(); i++)
    if (v[i] < v[i-1])
      return false;

  return true;
}

template <typename KeyType>
inline
double to_double (const KeyType &k)
{
  return static_cast<double>(k);
}

template <typename KeyType>
inline
KeyType to_key_type (const double f)
{
  return static_cast<KeyType>(f);
}

#ifdef LIBMESH_HAVE_LIBHILBERT

template <>
inline
double to_double (const Hilbert::HilbertIndices &bvt)
{
  return static_cast<double>(bvt.rack2);
}

template <>
inline
Hilbert::HilbertIndices
to_key_type (const double f)
{
  Hilbert::HilbertIndices bvt;

  bvt.rack0 = 0;
  bvt.rack1 = 0;
  bvt.rack2 = static_cast<Hilbert::inttype>(f);

  return bvt;
}
#endif // LIBMESH_HAVE_LIBHILBERT
}
}

} // namespace libMesh

#endif // LIBMESH_PARALLEL_CONVERSION_UTILS_H