78 lines
2.2 KiB
C++
78 lines
2.2 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 TestUniformIntDistribution
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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/uniform_int_distribution.hpp>
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#include <boost/compute/lambda.hpp>
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#include "context_setup.hpp"
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namespace compute=boost::compute;
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BOOST_AUTO_TEST_CASE(uniform_int_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(128, 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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// setup the uniform distribution to produce integers 0 and 1
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boost::compute::uniform_int_distribution<uint_> distribution(0, 1);
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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_CASE(issue159) {
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using boost::compute::lambda::_1;
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boost::compute::vector<int> input(10, context);
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// generate random numbers between 1 and 10
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compute::default_random_engine rng(queue);
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compute::uniform_int_distribution<int> d(1, 10);
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d.generate(input.begin(), input.end(), rng, queue);
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BOOST_CHECK_EQUAL(
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boost::compute::count_if(
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input.begin(), input.end(), _1 > 10, queue
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),
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size_t(0)
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);
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BOOST_CHECK_EQUAL(
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boost::compute::count_if(
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input.begin(), input.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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