/*
    Copyright 2012 Christian Henning, Andreas Pokorny, Lubomir Bourdev
    Use, modification and distribution are subject to the Boost Software License,
    Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
    http://www.boost.org/LICENSE_1_0.txt).
*/

/*************************************************************************************************/

#ifndef BOOST_GIL_EXTENSION_TOOLBOX_METAFUNCTIONS_IS_SIMILAR_HPP
#define BOOST_GIL_EXTENSION_TOOLBOX_METAFUNCTIONS_IS_SIMILAR_HPP

////////////////////////////////////////////////////////////////////////////////////////
/// \file is_similar.hpp
/// \brief is_similar metafunction.
/// \author Christian Henning, Andreas Pokorny, Lubomir Bourdev \n
///
/// \date 2012 \n
///
////////////////////////////////////////////////////////////////////////////////////////

#include <boost/gil/channel.hpp>

namespace boost{ namespace gil {

/// is_similar metafunctions
/// \brief Determines if two pixel types are similar.

template< typename A, typename B >
struct is_similar : mpl::false_ {};

template<typename A>
struct is_similar< A, A > : mpl::true_ {};

template<typename B,int I, int S, bool M, int I2>
struct is_similar< packed_channel_reference< B,  I, S, M >
                 , packed_channel_reference< B, I2, S, M >
                 > : mpl::true_ {};

} // namespace gil
} // namespace boost

#endif // BOOST_GIL_EXTENSION_TOOLBOX_METAFUNCTIONS_IS_SIMILAR_HPP