//---------------------------------------------------------------------------// // 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_ALGORITHM_REMOVE_IF_HPP #define BOOST_COMPUTE_ALGORITHM_REMOVE_IF_HPP #include <boost/static_assert.hpp> #include <boost/compute/system.hpp> #include <boost/compute/algorithm/copy_if.hpp> #include <boost/compute/container/vector.hpp> #include <boost/compute/functional/logical.hpp> #include <boost/compute/type_traits/is_device_iterator.hpp> namespace boost { namespace compute { /// Removes each element for which \p predicate returns \c true in the /// range [\p first, \p last). /// /// Space complexity: \Omega(3n) /// /// \see remove() template<class Iterator, class Predicate> inline Iterator remove_if(Iterator first, Iterator last, Predicate predicate, command_queue &queue = system::default_queue()) { BOOST_STATIC_ASSERT(is_device_iterator<Iterator>::value); typedef typename std::iterator_traits<Iterator>::value_type value_type; // temporary storage for the input data ::boost::compute::vector<value_type> tmp(first, last, queue); return ::boost::compute::copy_if(tmp.begin(), tmp.end(), first, not1(predicate), queue); } } // end compute namespace } // end boost namespace #endif // BOOST_COMPUTE_ALGORITHM_REMOVE_IF_HPP