mirror of https://gitee.com/bigwinds/arangodb
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
//---------------------------------------------------------------------------//
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// Copyright (c) 2014 Roshan <thisisroshansmail@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://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#define BOOST_TEST_MODULE TestDiscreteDistribution
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#include <boost/test/unit_test.hpp>
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#include <boost/compute/system.hpp>
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#include <boost/compute/command_queue.hpp>
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#include <boost/compute/algorithm/count_if.hpp>
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#include <boost/compute/container/vector.hpp>
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#include <boost/compute/random/default_random_engine.hpp>
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#include <boost/compute/random/discrete_distribution.hpp>
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#include <boost/compute/lambda.hpp>
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#include "context_setup.hpp"
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BOOST_AUTO_TEST_CASE(discrete_distribution_doctest)
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{
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using boost::compute::uint_;
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using boost::compute::lambda::_1;
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boost::compute::vector<uint_> vec(100, context);
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//! [generate]
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// initialize the default random engine
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boost::compute::default_random_engine engine(queue);
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// initialize weights
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int weights[] = {2, 2};
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// setup the discrete distribution to produce integers 0 and 1
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// with equal weights
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boost::compute::discrete_distribution<uint_> distribution(weights, weights+2);
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// generate the random values and store them to 'vec'
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distribution.generate(vec.begin(), vec.end(), engine, queue);
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// ! [generate]
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BOOST_CHECK_EQUAL(
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boost::compute::count_if(
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vec.begin(), vec.end(), _1 > 1, queue
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),
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size_t(0)
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);
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}
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BOOST_AUTO_TEST_SUITE_END()
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