88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
//---------------------------------------------------------------------------//
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// Copyright (c) 2013 Muhammad Junaid Muzammil <mjunaidmuzammil@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://kylelutz.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#define BOOST_TEST_MODULE TestThreefry
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#include <boost/test/unit_test.hpp>
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#include <boost/compute/random/threefry_engine.hpp>
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#include <boost/compute/container/vector.hpp>
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#include <boost/compute/random/uniform_real_distribution.hpp>
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#include "check_macros.hpp"
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#include "context_setup.hpp"
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BOOST_AUTO_TEST_CASE(generate_uint)
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{
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using boost::compute::uint_;
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boost::compute::threefry_engine<> random_engine(queue);
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boost::compute::vector<uint_> random_values(19, context);
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random_engine.generate(random_values.begin(), random_values.end(), queue);
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queue.finish();
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CHECK_RANGE_EQUAL(
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uint_, 19, random_values,
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(uint_(0x6b200159),
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uint_(0x99ba4efe),
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uint_(0x508efb2c),
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uint_(0xc0de3f32),
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uint_(0x64a626ec),
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uint_(0xfc15e573),
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uint_(0xb8abc4d1),
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uint_(0x537eb86),
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uint_(0xac6dc2bb),
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uint_(0xa7adb3c3),
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uint_(0x5641e094),
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uint_(0xe4ab4fd),
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uint_(0xa53c1ce9),
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uint_(0xabcf1dba),
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uint_(0x2677a25a),
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uint_(0x76cf5efc),
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uint_(0x2d08247f),
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uint_(0x815480f1),
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uint_(0x2d1fa53a))
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);
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}
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BOOST_AUTO_TEST_CASE(generate_float)
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{
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using boost::compute::float_;
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boost::compute::threefry_engine<> random_engine(queue);
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boost::compute::uniform_real_distribution<float_> random_distribution(0.f, 4.f);
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boost::compute::vector<float_> random_values(1024, context);
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random_distribution.generate(
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random_values.begin(), random_values.end(), random_engine, queue
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);
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std::vector<float_> random_values_host(1024);
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boost::compute::copy(
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random_values.begin(), random_values.end(),
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random_values_host.begin(),
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queue
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);
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queue.finish();
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double sum = 0.0;
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for(size_t i = 0; i < random_values_host.size(); i++)
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{
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BOOST_CHECK_LT(random_values_host[i], 4.0f);
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BOOST_CHECK_GE(random_values_host[i], 0.0f);
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sum += random_values_host[i];
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}
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double mean = sum / random_values_host.size();
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// For 1024 it can be 10% off
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BOOST_CHECK_CLOSE(mean, 2.0f, 10.0);
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}
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BOOST_AUTO_TEST_SUITE_END()
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