compute/algorithm/is_partitioned.hpp

0001 //---------------------------------------------------------------------------//
0002 // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
0003 //
0004 // Distributed under the Boost Software License, Version 1.0
0005 // See accompanying file LICENSE_1_0.txt or copy at
0006 // http://www.boost.org/LICENSE_1_0.txt
0007 //
0008 // See http://boostorg.github.com/compute for more information.
0009 //---------------------------------------------------------------------------//
0010
0011 #ifndef BOOST_COMPUTE_ALGORITHM_IS_PARTITIONED_HPP
0012 #define BOOST_COMPUTE_ALGORITHM_IS_PARTITIONED_HPP
0013
0014 #include <boost/static_assert.hpp>
0015
0016 #include <boost/compute/system.hpp>
0017 #include <boost/compute/command_queue.hpp>
0018 #include <boost/compute/algorithm/find_if.hpp>
0019 #include <boost/compute/algorithm/find_if_not.hpp>
0020 #include <boost/compute/type_traits/is_device_iterator.hpp>
0021
0022 namespace boost {
0023 namespace compute {
0024
0025 /// Returns \c true if the values in the range [\p first, \p last)
0026 /// are partitioned according to \p predicate.
0027 ///
0028 /// Space complexity: \Omega(1)
0029 template<class InputIterator, class UnaryPredicate>
0030 inline bool is_partitioned(InputIterator first,
0031                            InputIterator last,
0032                            UnaryPredicate predicate,
0033                            command_queue &queue = system::default_queue())
0034 {
0035     BOOST_STATIC_ASSERT(is_device_iterator<InputIterator>::value);
0036     return ::boost::compute::find_if(
0037                ::boost::compute::find_if_not(first,
0038                                              last,
0039                                              predicate,
0040                                              queue),
0041                 last,
0042                 predicate,
0043                 queue) == last;
0044 }
0045
0046 } // end compute namespace
0047 } // end boost namespace
0048
0049 #endif // BOOST_COMPUTE_ALGORITHM_PARTITION_HPP