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//---------------------------------------------------------------------------// // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com> // // Distributed under 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 // // See http://boostorg.github.com/compute for more information. //---------------------------------------------------------------------------// #ifndef BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP #define BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP namespace boost { namespace compute { namespace detail { // returns the buffer for an iterator adaptor's base iterator if // it exists, otherwise returns a null buffer object. template<class Iterator> inline const buffer& get_base_iterator_buffer(const Iterator &iter, typename boost::enable_if< is_buffer_iterator< typename Iterator::base_type > >::type* = 0) { return iter.base().get_buffer(); } template<class Iterator> inline const buffer& get_base_iterator_buffer(const Iterator &iter, typename boost::disable_if< is_buffer_iterator< typename Iterator::base_type > >::type* = 0) { (void) iter; static buffer null_buffer; return null_buffer; } } // end detail namespace } // end compute namespace } // end boost namespace #endif // BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP
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