ceph/src/boost/libs/compute/test/test_scatter.cpp

   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 #define BOOST_TEST_MODULE TestScatter
  12 #include <boost/test/unit_test.hpp>
  13
  14 #include <boost/compute/system.hpp>
  15 #include <boost/compute/algorithm/scatter.hpp>
  16 #include <boost/compute/container/vector.hpp>
  17 #include <boost/compute/iterator/constant_buffer_iterator.hpp>
  18
  19 #include "check_macros.hpp"
  20 #include "context_setup.hpp"
  21
  22 namespace bc = boost::compute;
  23
  24 BOOST_AUTO_TEST_CASE(scatter_int)
  25 {
  26     int input_data[] = { 1, 2, 3, 4, 5 };
  27     bc::vector<int> input(input_data, input_data + 5, queue);
  28
  29     int map_data[] = { 0, 4, 1, 3, 2 };
  30     bc::vector<int> map(map_data, map_data + 5, queue);
  31
  32     bc::vector<int> output(5, context);
  33     bc::scatter(input.begin(), input.end(), map.begin(), output.begin(), queue);
  34     CHECK_RANGE_EQUAL(int, 5, output, (1, 3, 5, 4, 2));
  35 }
  36
  37 BOOST_AUTO_TEST_CASE(scatter_constant_indices)
  38 {
  39     int input_data[] = { 1, 2, 3, 4, 5 };
  40     bc::vector<int> input(input_data, input_data + 5, queue);
  41
  42     int map_data[] = { 0, 4, 1, 3, 2 };
  43     bc::buffer map_buffer(context,
  44                           5 * sizeof(int),
  45                           bc::buffer::read_only | bc::buffer::use_host_ptr,
  46                           map_data);
  47
  48     bc::vector<int> output(5, context);
  49     bc::scatter(input.begin(),
  50                 input.end(),
  51                 bc::make_constant_buffer_iterator<int>(map_buffer, 0),
  52                 output.begin(),
  53                 queue);
  54     CHECK_RANGE_EQUAL(int, 5, output, (1, 3, 5, 4, 2));
  55 }
  56
  57 BOOST_AUTO_TEST_SUITE_END()