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#include <unittest/unittest.h>
#include <thrust/iterator/reverse_iterator.h>
#include <thrust/sequence.h>
#include <thrust/scan.h>
void TestReverseIteratorCopyConstructor(void)
{
thrust::host_vector<int> h_v(1,13);
thrust::reverse_iterator<thrust::host_vector<int>::iterator> h_iter0(h_v.end());
thrust::reverse_iterator<thrust::host_vector<int>::iterator> h_iter1(h_iter0);
ASSERT_EQUAL_QUIET(h_iter0, h_iter1);
ASSERT_EQUAL(*h_iter0, *h_iter1);
thrust::device_vector<int> d_v(1,13);
thrust::reverse_iterator<thrust::device_vector<int>::iterator> d_iter2(d_v.end());
thrust::reverse_iterator<thrust::device_vector<int>::iterator> d_iter3(d_iter2);
ASSERT_EQUAL_QUIET(d_iter2, d_iter3);
ASSERT_EQUAL(*d_iter2, *d_iter3);
}
DECLARE_UNITTEST(TestReverseIteratorCopyConstructor);
void TestReverseIteratorIncrement(void)
{
thrust::host_vector<int> h_v(4);
thrust::sequence(h_v.begin(), h_v.end());
thrust::reverse_iterator<thrust::host_vector<int>::iterator> h_iter(h_v.end());
ASSERT_EQUAL(*h_iter, 3);
h_iter++;
ASSERT_EQUAL(*h_iter, 2);
h_iter++;
ASSERT_EQUAL(*h_iter, 1);
h_iter++;
ASSERT_EQUAL(*h_iter, 0);
thrust::device_vector<int> d_v(4);
thrust::sequence(d_v.begin(), d_v.end());
thrust::reverse_iterator<thrust::device_vector<int>::iterator> d_iter(d_v.end());
ASSERT_EQUAL(*d_iter, 3);
d_iter++;
ASSERT_EQUAL(*d_iter, 2);
d_iter++;
ASSERT_EQUAL(*d_iter, 1);
d_iter++;
ASSERT_EQUAL(*d_iter, 0);
}
DECLARE_UNITTEST(TestReverseIteratorIncrement);
template <typename Vector>
void TestReverseIteratorCopy(void)
{
Vector source(4);
source[0] = 10;
source[1] = 20;
source[2] = 30;
source[3] = 40;
Vector destination(4,0);
thrust::copy(thrust::make_reverse_iterator(source.end()),
thrust::make_reverse_iterator(source.begin()),
destination.begin());
ASSERT_EQUAL(destination[0], 40);
ASSERT_EQUAL(destination[1], 30);
ASSERT_EQUAL(destination[2], 20);
ASSERT_EQUAL(destination[3], 10);
}
DECLARE_VECTOR_UNITTEST(TestReverseIteratorCopy);
void TestReverseIteratorExclusiveScanSimple(void)
{
typedef int T;
const size_t n = 10;
thrust::host_vector<T> h_data(n);
thrust::sequence(h_data.begin(), h_data.end());
thrust::device_vector<T> d_data = h_data;
thrust::host_vector<T> h_result(h_data.size());
thrust::device_vector<T> d_result(d_data.size());
thrust::exclusive_scan(thrust::make_reverse_iterator(h_data.end()),
thrust::make_reverse_iterator(h_data.begin()),
h_result.begin());
thrust::exclusive_scan(thrust::make_reverse_iterator(d_data.end()),
thrust::make_reverse_iterator(d_data.begin()),
d_result.begin());
ASSERT_EQUAL_QUIET(h_result, d_result);
}
DECLARE_UNITTEST(TestReverseIteratorExclusiveScanSimple);
template <typename T>
struct TestReverseIteratorExclusiveScan
{
void operator()(const size_t n)
{
thrust::host_vector<T> h_data = unittest::random_samples<T>(n);
thrust::device_vector<T> d_data = h_data;
thrust::host_vector<T> h_result(n);
thrust::device_vector<T> d_result(n);
thrust::exclusive_scan(thrust::make_reverse_iterator(h_data.end()),
thrust::make_reverse_iterator(h_data.begin()),
h_result.begin());
thrust::exclusive_scan(thrust::make_reverse_iterator(d_data.end()),
thrust::make_reverse_iterator(d_data.begin()),
d_result.begin());
ASSERT_EQUAL_QUIET(h_result, d_result);
}
};
VariableUnitTest<TestReverseIteratorExclusiveScan, IntegralTypes> TestReverseIteratorExclusiveScanInstance;
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