NumericRoundCast.hxx

/* ***** BEGIN LICENSE BLOCK *****
 * FW4SPL - Copyright (C) IRCAD, 2009-2015.
 * Distributed under the terms of the GNU Lesser General Public License (LGPL) as
 * published by the Free Software Foundation.
 * ****** END LICENSE BLOCK ****** */

#ifndef __FWTOOLS_NUMERICROUNDCAST_HXX__
#define __FWTOOLS_NUMERICROUNDCAST_HXX__

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

namespace fwTools
{

template < typename TYPEOUT, typename TYPEIN>
TYPEOUT numericRoundCast (const TYPEIN &value)
{
    typedef ::boost::numeric::conversion_traits<TYPEOUT, TYPEIN> TraitsType;
    typedef ::boost::numeric::silent_overflow_handler OverflowHandlerType;
    typedef ::boost::numeric::RoundEven<typename TraitsType::source_type> RoundEvenType;
    typedef ::boost::numeric::raw_converter<TraitsType> ConverterType;
    typedef ::boost::numeric::UseInternalRangeChecker RangeCheckerType;

    typedef ::boost::numeric::converter<
            TYPEOUT,
            TYPEIN,
            TraitsType,
            OverflowHandlerType,
            RoundEvenType,
            ConverterType,
            RangeCheckerType
            > RoundCastType;

    return RoundCastType::convert(value);
}

} // namespace fwTools

#endif //__FWTOOLS_NUMERICROUNDCAST_HXX__