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//---------------------------------------------------------------------------//
// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@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 TestTransformIterator
#include <boost/test/unit_test.hpp>
#include <iterator>
#include <boost/type_traits.hpp>
#include <boost/static_assert.hpp>
#include <boost/compute/types.hpp>
#include <boost/compute/functional.hpp>
#include <boost/compute/algorithm/copy.hpp>
#include <boost/compute/container/vector.hpp>
#include <boost/compute/iterator/buffer_iterator.hpp>
#include <boost/compute/iterator/transform_iterator.hpp>
#include "check_macros.hpp"
#include "context_setup.hpp"
BOOST_AUTO_TEST_CASE(value_type)
{
using boost::compute::float4_;
BOOST_STATIC_ASSERT((
boost::is_same<
boost::compute::transform_iterator<
boost::compute::buffer_iterator<float>,
boost::compute::sqrt<float>
>::value_type,
float
>::value
));
BOOST_STATIC_ASSERT((
boost::is_same<
boost::compute::transform_iterator<
boost::compute::buffer_iterator<float4_>,
boost::compute::length<float4_>
>::value_type,
float
>::value
));
}
BOOST_AUTO_TEST_CASE(base_type)
{
BOOST_STATIC_ASSERT((
boost::is_same<
boost::compute::transform_iterator<
boost::compute::buffer_iterator<int>, boost::compute::abs<int>
>::base_type,
boost::compute::buffer_iterator<int>
>::value
));
}
BOOST_AUTO_TEST_CASE(copy)
{
int data[] = { 1, -2, 3, -4, 5 };
boost::compute::vector<int> a(data, data + 5, queue);
boost::compute::vector<int> b(5, context);
boost::compute::copy(
boost::compute::make_transform_iterator(
a.begin(),
boost::compute::abs<int>()
),
boost::compute::make_transform_iterator(
a.end(),
boost::compute::abs<int>()
),
b.begin(),
queue
);
CHECK_RANGE_EQUAL(int, 5, b, (1, 2, 3, 4, 5));
}
BOOST_AUTO_TEST_CASE(copy_abs_doctest)
{
int data[] = { -1, -2, -3, -4 };
boost::compute::vector<int> input(data, data + 4, queue);
boost::compute::vector<int> output(4, context);
//! [copy_abs]
// use abs() from boost.compute
using boost::compute::abs;
// copy the absolute value for each element in input to output
boost::compute::copy(
boost::compute::make_transform_iterator(input.begin(), abs<int>()),
boost::compute::make_transform_iterator(input.end(), abs<int>()),
output.begin(),
queue
);
//! [copy_abs]
CHECK_RANGE_EQUAL(int, 4, output, (1, 2, 3, 4));
}
BOOST_AUTO_TEST_SUITE_END()
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