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 TestFunctionalAs
12#include <boost/test/unit_test.hpp>
13
14#include <boost/compute/system.hpp>
15#include <boost/compute/algorithm/copy_n.hpp>
16#include <boost/compute/algorithm/transform.hpp>
17#include <boost/compute/container/vector.hpp>
18#include <boost/compute/functional/as.hpp>
19
20#include "check_macros.hpp"
21#include "context_setup.hpp"
22
23namespace compute = boost::compute;
24
25BOOST_AUTO_TEST_CASE(roundtrip_int_float)
26{
27 int data[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
28 compute::vector<int> input(8, context);
29 compute::copy_n(data, 8, input.begin(), queue);
30
31 // convert int -> float
32 compute::vector<float> output(8, context);
33 compute::transform(
34 input.begin(),
35 input.end(),
36 output.begin(),
37 compute::as<float>(),
38 queue
39 );
40
41 // zero out input
42 compute::fill(input.begin(), input.end(), 0, queue);
43
44 // convert float -> int
45 compute::transform(
46 output.begin(),
47 output.end(),
48 input.begin(),
49 compute::as<int>(),
50 queue
51 );
52
53 // check values
54 CHECK_RANGE_EQUAL(
55 int, 8, input, (1, 2, 3, 4, 5, 6, 7, 8)
56 );
57}
58
59BOOST_AUTO_TEST_SUITE_END()
60

source code of boost/libs/compute/test/test_functional_as.cpp