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- //---------------------------------------------------------------------------//
- // Copyright (c) 2014 Roshan <thisisroshansmail@gmail.com>
- //
- // Distributed under the Boost Software License, Version 1.0
- // See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt
- //
- // See http://boostorg.github.com/compute for more information.
- //---------------------------------------------------------------------------//
- #define BOOST_TEST_MODULE TestUniformIntDistribution
- #include <boost/test/unit_test.hpp>
- #include <boost/compute/system.hpp>
- #include <boost/compute/command_queue.hpp>
- #include <boost/compute/algorithm/count_if.hpp>
- #include <boost/compute/container/vector.hpp>
- #include <boost/compute/random/default_random_engine.hpp>
- #include <boost/compute/random/uniform_int_distribution.hpp>
- #include <boost/compute/lambda.hpp>
- #include "context_setup.hpp"
- namespace compute=boost::compute;
- BOOST_AUTO_TEST_CASE(uniform_int_distribution_doctest)
- {
- using boost::compute::uint_;
- using boost::compute::lambda::_1;
- boost::compute::vector<uint_> vec(128, context);
- //! [generate]
- // initialize the default random engine
- boost::compute::default_random_engine engine(queue);
- // setup the uniform distribution to produce integers 0 and 1
- boost::compute::uniform_int_distribution<uint_> distribution(0, 1);
- // generate the random values and store them to 'vec'
- distribution.generate(vec.begin(), vec.end(), engine, queue);
- //! [generate]
- BOOST_CHECK_EQUAL(
- boost::compute::count_if(
- vec.begin(), vec.end(), _1 > 1, queue
- ),
- size_t(0)
- );
- }
- BOOST_AUTO_TEST_CASE(issue159) {
- using boost::compute::lambda::_1;
- boost::compute::vector<int> input(10, context);
- // generate random numbers between 1 and 10
- compute::default_random_engine rng(queue);
- compute::uniform_int_distribution<int> d(1, 10);
- d.generate(input.begin(), input.end(), rng, queue);
- BOOST_CHECK_EQUAL(
- boost::compute::count_if(
- input.begin(), input.end(), _1 > 10, queue
- ),
- size_t(0)
- );
- BOOST_CHECK_EQUAL(
- boost::compute::count_if(
- input.begin(), input.end(), _1 < 1, queue
- ),
- size_t(0)
- );
- }
- BOOST_AUTO_TEST_SUITE_END()
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