//============================================================================
//  Copyright (c) Kitware, Inc.
//  All rights reserved.
//  See LICENSE.txt for details.
//  This software is distributed WITHOUT ANY WARRANTY; without even
//  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
//  PURPOSE.  See the above copyright notice for more information.
//
//  Copyright 2018 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
//  Copyright 2018 UT-Battelle, LLC.
//  Copyright 2018 Los Alamos National Security.
//
//  Under the terms of Contract DE-NA0003525 with NTESS,
//  the U.S. Government retains certain rights in this software.
//
//  Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
//  Laboratory (LANL), the U.S. Government retains certain rights in
//  this software.
//============================================================================

#ifndef vtk_m_Swap_h
#define vtk_m_Swap_h

#include <vtkm/internal/ExportMacros.h>

#include <algorithm>

namespace vtkm
{

/// Performs a swap operation. Safe to call from cuda code.
#ifdef __CUDACC__
template <typename T>
VTKM_EXEC_CONT void Swap(T& a, T& b)
{
  T tmp = a;
  a = b;
  b = tmp;
}
#else
template <typename T>
VTKM_EXEC_CONT void Swap(T& a, T& b)
{
  using namespace std;
  swap(a, b);
}
#endif

} // end namespace vtkm

#endif //vtk_m_Swap_h