/*****************************************************************************
 *
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2015 Artem Pavlenko
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *****************************************************************************/

#ifndef MAPNIK_UTIL_ROUNDING_CAST_HPP
#define MAPNIK_UTIL_ROUNDING_CAST_HPP

#include <boost/numeric/conversion/converter.hpp> 

namespace mapnik { 
namespace util {

template<typename Target, typename Source> 
inline 
Target rounding_cast ( Source arg ) 
{ 
  typedef boost::numeric::conversion_traits<Target,Source> Traits ; 

  typedef 
boost::numeric::converter<Target,Source,Traits,boost::numeric::def_overflow_handler,boost::numeric::RoundEven<Source> 
 > Converter ; 

  return Converter::convert(arg); 
} 

} // end util ns
} // end mapnik ns

#endif //MAPNIK_UTIL_ROUNDING_CAST_HPP

