ceph/src/boost/libs/compute/include/boost/compute/algorithm/detail/random_fill.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_DETAIL_RANDOM_FILL_HPP
  12 #define BOOST_COMPUTE_ALGORITHM_DETAIL_RANDOM_FILL_HPP
  13
  14 #include <iterator>
  15
  16 #include <boost/compute/command_queue.hpp>
  17 #include <boost/compute/random/default_random_engine.hpp>
  18 #include <boost/compute/random/uniform_real_distribution.hpp>
  19
  20 namespace boost {
  21 namespace compute {
  22 namespace detail {
  23
  24 template<class OutputIterator, class Generator>
  25 inline void random_fill(OutputIterator first,
  26                         OutputIterator last,
  27                         Generator &g,
  28                         command_queue &queue)
  29 {
  30     g.fill(first, last, queue);
  31 }
  32
  33 template<class OutputIterator>
  34 inline void
  35 random_fill(OutputIterator first,
  36             OutputIterator last,
  37             typename std::iterator_traits<OutputIterator>::value_type lo,
  38             typename std::iterator_traits<OutputIterator>::value_type hi,
  39             command_queue &queue)
  40 {
  41     typedef typename
  42         std::iterator_traits<OutputIterator>::value_type value_type;
  43     typedef typename
  44         boost::compute::default_random_engine engine_type;
  45     typedef typename
  46         boost::compute::uniform_real_distribution<value_type> distribution_type;
  47
  48     engine_type engine(queue);
  49     distribution_type generator(lo, hi);
  50     generator.fill(first, last, engine, queue);
  51 }
  52
  53 } // end detail namespace
  54 } // end compute namespace
  55 } // end boost namespace
  56
  57 #endif // BOOST_COMPUTE_ALGORITHM_DETAIL_RANDOM_FILL_HPP