ceph/src/boost/boost/compute/algorithm/remove.hpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #ifndef BOOST_COMPUTE_ALGORITHM_REMOVE_HPP
  12 #define BOOST_COMPUTE_ALGORITHM_REMOVE_HPP
  13
  14 #include <boost/compute/lambda.hpp>
  15 #include <boost/compute/system.hpp>
  16 #include <boost/compute/algorithm/remove_if.hpp>
  17 #include <boost/compute/type_traits/vector_size.hpp>
  18
  19 namespace boost {
  20 namespace compute {
  21
  22 /// Removes each element equal to \p value in the range [\p first,
  23 /// \p last).
  24 ///
  25 /// Space complexity: \Omega(3n)
  26 ///
  27 /// \see remove_if()
  28 template<class Iterator, class T>
  29 inline Iterator remove(Iterator first,
  30                        Iterator last,
  31                        const T &value,
  32                        command_queue &queue = system::default_queue())
  33 {
  34     typedef typename std::iterator_traits<Iterator>::value_type value_type;
  35
  36     using ::boost::compute::_1;
  37     using ::boost::compute::lambda::all;
  38
  39     if(vector_size<value_type>::value == 1){
  40         return ::boost::compute::remove_if(first,
  41                                            last,
  42                                            _1 == value,
  43                                            queue);
  44     }
  45     else {
  46         return ::boost::compute::remove_if(first,
  47                                            last,
  48                                            all(_1 == value),
  49                                            queue);
  50     }
  51 }
  52
  53 } // end compute namespace
  54 } // end boost namespace
  55
  56 #endif // BOOST_COMPUTE_ALGORITHM_REMOVE_HPP