ceph/src/boost/libs/compute/include/boost/compute/experimental/clamp_range.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_EXPERIMENTAL_CLAMP_RANGE_HPP
  12 #define BOOST_COMPUTE_EXPERIMENTAL_CLAMP_RANGE_HPP
  13
  14 #include <iterator>
  15
  16 #include <boost/compute/lambda.hpp>
  17 #include <boost/compute/algorithm/transform.hpp>
  18
  19 namespace boost {
  20 namespace compute {
  21 namespace experimental {
  22
  23 template<class InputIterator, class OutputIterator>
  24 inline OutputIterator
  25 clamp_range(InputIterator first,
  26             InputIterator last,
  27             OutputIterator result,
  28             typename std::iterator_traits<InputIterator>::value_type lo,
  29             typename std::iterator_traits<InputIterator>::value_type hi,
  30             command_queue &queue)
  31 {
  32     using ::boost::compute::lambda::_1;
  33     using ::boost::compute::lambda::_2;
  34     using ::boost::compute::lambda::clamp;
  35
  36     return ::boost::compute::transform(
  37         first,
  38         last,
  39         result,
  40         clamp(_1, lo, hi),
  41         queue
  42     );
  43 }
  44
  45 } // end experimental namespace
  46 } // end compute namespace
  47 } // end boost namespace
  48
  49 #endif // BOOST_COMPUTE_EXPERIMENTAL_CLAMP_RANGE_HPP