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#include <unittest/unittest.h>
#include <thrust/set_operations.h>
#include <thrust/functional.h>
#include <thrust/sort.h>
#include <thrust/extrema.h>
#include <thrust/iterator/discard_iterator.h>
#include <thrust/iterator/retag.h>
template<typename InputIterator1,
typename InputIterator2,
typename OutputIterator>
OutputIterator set_intersection(my_system &system,
InputIterator1,
InputIterator1,
InputIterator2,
InputIterator2,
OutputIterator result)
{
system.validate_dispatch();
return result;
}
void TestSetIntersectionDispatchExplicit()
{
thrust::device_vector<int> vec(1);
my_system sys(0);
thrust::set_intersection(sys,
vec.begin(),
vec.begin(),
vec.begin(),
vec.begin(),
vec.begin());
ASSERT_EQUAL(true, sys.is_valid());
}
DECLARE_UNITTEST(TestSetIntersectionDispatchExplicit);
template<typename InputIterator1,
typename InputIterator2,
typename OutputIterator>
OutputIterator set_intersection(my_tag,
InputIterator1,
InputIterator1,
InputIterator2,
InputIterator2,
OutputIterator result)
{
*result = 13;
return result;
}
void TestSetIntersectionDispatchImplicit()
{
thrust::device_vector<int> vec(1);
thrust::set_intersection(thrust::retag<my_tag>(vec.begin()),
thrust::retag<my_tag>(vec.begin()),
thrust::retag<my_tag>(vec.begin()),
thrust::retag<my_tag>(vec.begin()),
thrust::retag<my_tag>(vec.begin()));
ASSERT_EQUAL(13, vec.front());
}
DECLARE_UNITTEST(TestSetIntersectionDispatchImplicit);
template<typename Vector>
void TestSetIntersectionSimple(void)
{
typedef typename Vector::iterator Iterator;
Vector a(3), b(4);
a[0] = 0; a[1] = 2; a[2] = 4;
b[0] = 0; b[1] = 3; b[2] = 3; b[3] = 4;
Vector ref(2);
ref[0] = 0; ref[1] = 4;
Vector result(2);
Iterator end = thrust::set_intersection(a.begin(), a.end(),
b.begin(), b.end(),
result.begin());
ASSERT_EQUAL_QUIET(result.end(), end);
ASSERT_EQUAL(ref, result);
}
DECLARE_VECTOR_UNITTEST(TestSetIntersectionSimple);
template<typename T>
void TestSetIntersection(const size_t n)
{
size_t sizes[] = {0, 1, n / 2, n, n + 1, 2 * n};
size_t num_sizes = sizeof(sizes) / sizeof(size_t);
thrust::host_vector<T> random = unittest::random_integers<unittest::int8_t>(n + *thrust::max_element(sizes, sizes + num_sizes));
thrust::host_vector<T> h_a(random.begin(), random.begin() + n);
thrust::host_vector<T> h_b(random.begin() + n, random.end());
thrust::stable_sort(h_a.begin(), h_a.end());
thrust::stable_sort(h_b.begin(), h_b.end());
thrust::device_vector<T> d_a = h_a;
thrust::device_vector<T> d_b = h_b;
for (size_t i = 0; i < num_sizes; i++)
{
size_t size = sizes[i];
thrust::host_vector<T> h_result(n + size);
thrust::device_vector<T> d_result(n + size);
typename thrust::host_vector<T>::iterator h_end;
typename thrust::device_vector<T>::iterator d_end;
h_end = thrust::set_intersection(h_a.begin(), h_a.end(),
h_b.begin(), h_b.begin() + size,
h_result.begin());
h_result.resize(h_end - h_result.begin());
d_end = thrust::set_intersection(d_a.begin(), d_a.end(),
d_b.begin(), d_b.begin() + size,
d_result.begin());
d_result.resize(d_end - d_result.begin());
ASSERT_EQUAL(h_result, d_result);
}
}
DECLARE_VARIABLE_UNITTEST(TestSetIntersection);
template<typename T>
void TestSetIntersectionToDiscardIterator(const size_t n)
{
thrust::host_vector<T> temp = unittest::random_integers<T>(2 * n);
thrust::host_vector<T> h_a(temp.begin(), temp.begin() + n);
thrust::host_vector<T> h_b(temp.begin() + n, temp.end());
thrust::sort(h_a.begin(), h_a.end());
thrust::sort(h_b.begin(), h_b.end());
thrust::device_vector<T> d_a = h_a;
thrust::device_vector<T> d_b = h_b;
thrust::discard_iterator<> h_result;
thrust::discard_iterator<> d_result;
thrust::host_vector<T> h_reference(n);
typename thrust::host_vector<T>::iterator h_end =
thrust::set_intersection(h_a.begin(), h_a.end(),
h_b.begin(), h_b.end(),
h_reference.begin());
h_reference.erase(h_end, h_reference.end());
h_result = thrust::set_intersection(h_a.begin(), h_a.end(),
h_b.begin(), h_b.end(),
thrust::make_discard_iterator());
d_result = thrust::set_intersection(d_a.begin(), d_a.end(),
d_b.begin(), d_b.end(),
thrust::make_discard_iterator());
thrust::discard_iterator<> reference(h_reference.size());
ASSERT_EQUAL_QUIET(reference, h_result);
ASSERT_EQUAL_QUIET(reference, d_result);
}
DECLARE_VARIABLE_UNITTEST(TestSetIntersectionToDiscardIterator);
template<typename T>
void TestSetIntersectionEquivalentRanges(const size_t n)
{
thrust::host_vector<T> temp = unittest::random_integers<T>(n);
thrust::host_vector<T> h_a = temp; thrust::sort(h_a.begin(), h_a.end());
thrust::host_vector<T> h_b = h_a;
thrust::device_vector<T> d_a = h_a;
thrust::device_vector<T> d_b = h_b;
thrust::host_vector<T> h_result(n);
thrust::device_vector<T> d_result(n);
typename thrust::host_vector<T>::iterator h_end;
typename thrust::device_vector<T>::iterator d_end;
h_end = thrust::set_intersection(h_a.begin(), h_a.end(),
h_b.begin(), h_b.end(),
h_result.begin());
h_result.resize(h_end - h_result.begin());
d_end = thrust::set_intersection(d_a.begin(), d_a.end(),
d_b.begin(), d_b.end(),
d_result.begin());
d_result.resize(d_end - d_result.begin());
ASSERT_EQUAL(h_result, d_result);
}
DECLARE_VARIABLE_UNITTEST(TestSetIntersectionEquivalentRanges);
template<typename T>
void TestSetIntersectionMultiset(const size_t n)
{
thrust::host_vector<T> temp = unittest::random_integers<T>(2 * n);
// restrict elements to [min,13)
for(typename thrust::host_vector<T>::iterator i = temp.begin();
i != temp.end();
++i)
{
int temp = static_cast<int>(*i);
temp %= 13;
*i = temp;
}
thrust::host_vector<T> h_a(temp.begin(), temp.begin() + n);
thrust::host_vector<T> h_b(temp.begin() + n, temp.end());
thrust::sort(h_a.begin(), h_a.end());
thrust::sort(h_b.begin(), h_b.end());
thrust::device_vector<T> d_a = h_a;
thrust::device_vector<T> d_b = h_b;
thrust::host_vector<T> h_result(n);
thrust::device_vector<T> d_result(n);
typename thrust::host_vector<T>::iterator h_end;
typename thrust::device_vector<T>::iterator d_end;
h_end = thrust::set_intersection(h_a.begin(), h_a.end(),
h_b.begin(), h_b.end(),
h_result.begin());
h_result.resize(h_end - h_result.begin());
d_end = thrust::set_intersection(d_a.begin(), d_a.end(),
d_b.begin(), d_b.end(),
d_result.begin());
d_result.resize(d_end - d_result.begin());
ASSERT_EQUAL(h_result, d_result);
}
DECLARE_VARIABLE_UNITTEST(TestSetIntersectionMultiset);
// FIXME: disabled on Windows, because it causes a failure on the internal CI system in one specific configuration.
// That failure will be tracked in a new NVBug, this is disabled to unblock submitting all the other changes.
#if THRUST_HOST_COMPILER != THRUST_HOST_COMPILER_MSVC
void TestSetDifferenceWithBigIndexesHelper(int magnitude)
{
thrust::counting_iterator<long long> begin1(0);
thrust::counting_iterator<long long> begin2 = begin1 + (1ll << magnitude);
thrust::counting_iterator<long long> end1 = begin2 + 1;
thrust::counting_iterator<long long> end2 = begin2 + (1ll << magnitude);
ASSERT_EQUAL(thrust::distance(begin2, end1), 1);
thrust::device_vector<long long> result;
result.resize(1);
thrust::set_intersection(thrust::device, begin1, end1, begin2, end2, result.begin());
thrust::host_vector<long long> expected;
expected.push_back(*begin2);
ASSERT_EQUAL(result, expected);
}
void TestSetDifferenceWithBigIndexes()
{
TestSetDifferenceWithBigIndexesHelper(30);
TestSetDifferenceWithBigIndexesHelper(31);
TestSetDifferenceWithBigIndexesHelper(32);
TestSetDifferenceWithBigIndexesHelper(33);
}
DECLARE_UNITTEST(TestSetDifferenceWithBigIndexes);
#endif
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