1 //---------------------------------------------------------------------------//
2 // Copyright (c) 2013 Muhammad Junaid Muzammil <mjunaidmuzammil@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://kylelutz.github.com/compute for more information.
9 //---------------------------------------------------------------------------//
10
11 #define BOOST_TEST_MODULE TestThreefry
12 #include <boost/test/unit_test.hpp>
13
14 #include <boost/compute/random/threefry_engine.hpp>
15 #include <boost/compute/container/vector.hpp>
16
17 #include <boost/compute/random/uniform_real_distribution.hpp>
18
19 #include "check_macros.hpp"
20 #include "context_setup.hpp"
21
BOOST_AUTO_TEST_CASE(generate_uint)22 BOOST_AUTO_TEST_CASE(generate_uint)
23 {
24 using boost::compute::uint_;
25
26 boost::compute::threefry_engine<> random_engine(queue);
27 boost::compute::vector<uint_> random_values(19, context);
28
29 random_engine.generate(random_values.begin(), random_values.end(), queue);
30 queue.finish();
31 CHECK_RANGE_EQUAL(
32 uint_, 19, random_values,
33 (uint_(0x6b200159),
34 uint_(0x99ba4efe),
35 uint_(0x508efb2c),
36 uint_(0xc0de3f32),
37 uint_(0x64a626ec),
38 uint_(0xfc15e573),
39 uint_(0xb8abc4d1),
40 uint_(0x537eb86),
41 uint_(0xac6dc2bb),
42 uint_(0xa7adb3c3),
43 uint_(0x5641e094),
44 uint_(0xe4ab4fd),
45 uint_(0xa53c1ce9),
46 uint_(0xabcf1dba),
47 uint_(0x2677a25a),
48 uint_(0x76cf5efc),
49 uint_(0x2d08247f),
50 uint_(0x815480f1),
51 uint_(0x2d1fa53a))
52 );
53 }
54
BOOST_AUTO_TEST_CASE(generate_float)55 BOOST_AUTO_TEST_CASE(generate_float)
56 {
57 using boost::compute::float_;
58
59 boost::compute::threefry_engine<> random_engine(queue);
60 boost::compute::uniform_real_distribution<float_> random_distribution(0.f, 4.f);
61
62 boost::compute::vector<float_> random_values(1024, context);
63 random_distribution.generate(
64 random_values.begin(), random_values.end(), random_engine, queue
65 );
66
67 std::vector<float_> random_values_host(1024);
68 boost::compute::copy(
69 random_values.begin(), random_values.end(),
70 random_values_host.begin(),
71 queue
72 );
73 queue.finish();
74
75 double sum = 0.0;
76 for(size_t i = 0; i < random_values_host.size(); i++)
77 {
78 BOOST_CHECK_LT(random_values_host[i], 4.0f);
79 BOOST_CHECK_GE(random_values_host[i], 0.0f);
80 sum += random_values_host[i];
81 }
82 double mean = sum / random_values_host.size();
83 // For 1024 it can be 10% off
84 BOOST_CHECK_CLOSE(mean, 2.0f, 10.0);
85 }
86
87 BOOST_AUTO_TEST_SUITE_END()
88