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#include <thrust/extrema.h>
#include <thrust/functional.h>
#include <thrust/iterator/retag.h>
#include <thrust/set_operations.h>
#include <thrust/sort.h>
#include <unittest/unittest.h>
template <typename InputIterator1, typename InputIterator2, typename OutputIterator>
OutputIterator set_symmetric_difference(
my_system& system, InputIterator1, InputIterator1, InputIterator2, InputIterator2, OutputIterator result)
{
system.validate_dispatch();
return result;
}
void TestSetSymmetricDifferenceDispatchExplicit()
{
thrust::device_vector<int> vec(1);
my_system sys(0);
thrust::set_symmetric_difference(sys, vec.begin(), vec.begin(), vec.begin(), vec.begin(), vec.begin());
ASSERT_EQUAL(true, sys.is_valid());
}
DECLARE_UNITTEST(TestSetSymmetricDifferenceDispatchExplicit);
template <typename InputIterator1, typename InputIterator2, typename OutputIterator>
OutputIterator
set_symmetric_difference(my_tag, InputIterator1, InputIterator1, InputIterator2, InputIterator2, OutputIterator result)
{
*result = 13;
return result;
}
void TestSetSymmetricDifferenceDispatchImplicit()
{
thrust::device_vector<int> vec(1);
thrust::set_symmetric_difference(
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(TestSetSymmetricDifferenceDispatchImplicit);
template <typename Vector>
void TestSetSymmetricDifferenceSimple()
{
typedef typename Vector::iterator Iterator;
// clang-format off
Vector a(4), b(5);
a[0] = 0; a[1] = 2; a[2] = 4; a[3] = 6;
b[0] = 0; b[1] = 3; b[2] = 3; b[3] = 4; b[4] = 7;
Vector ref(5);
ref[0] = 2; ref[1] = 3; ref[2] = 3; ref[3] = 6; ref[4] = 7;
// clang-format on
Vector result(5);
Iterator end = thrust::set_symmetric_difference(a.begin(), a.end(), b.begin(), b.end(), result.begin());
ASSERT_EQUAL_QUIET(result.end(), end);
ASSERT_EQUAL(ref, result);
}
DECLARE_VECTOR_UNITTEST(TestSetSymmetricDifferenceSimple);
template <typename T>
void TestSetSymmetricDifference(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_symmetric_difference(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_symmetric_difference(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(TestSetSymmetricDifference);
template <typename T>
void TestSetSymmetricDifferenceEquivalentRanges(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(h_a.size() + h_b.size());
thrust::device_vector<T> d_result(h_result.size());
typename thrust::host_vector<T>::iterator h_end;
typename thrust::device_vector<T>::iterator d_end;
h_end = thrust::set_symmetric_difference(h_a.begin(), h_a.end(), h_b.begin(), h_b.end(), h_result.begin());
h_result.erase(h_end, h_result.end());
d_end = thrust::set_symmetric_difference(d_a.begin(), d_a.end(), d_b.begin(), d_b.end(), d_result.begin());
d_result.erase(d_end, d_result.end());
ASSERT_EQUAL(h_result, d_result);
}
DECLARE_VARIABLE_UNITTEST(TestSetSymmetricDifferenceEquivalentRanges);
template <typename T>
void TestSetSymmetricDifferenceMultiset(const size_t n)
{
thrust::host_vector<T> vec = unittest::random_integers<T>(2 * n);
// restrict elements to [min,13)
for (typename thrust::host_vector<T>::iterator i = vec.begin(); i != vec.end(); ++i)
{
int temp = static_cast<int>(*i);
temp %= 13;
*i = temp;
}
thrust::host_vector<T> h_a(vec.begin(), vec.begin() + n);
thrust::host_vector<T> h_b(vec.begin() + n, vec.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(h_a.size() + h_b.size());
thrust::device_vector<T> d_result(h_result.size());
typename thrust::host_vector<T>::iterator h_end;
typename thrust::device_vector<T>::iterator d_end;
h_end = thrust::set_difference(h_a.begin(), h_a.end(), h_b.begin(), h_b.end(), h_result.begin());
h_result.erase(h_end, h_result.end());
d_end = thrust::set_difference(d_a.begin(), d_a.end(), d_b.begin(), d_b.end(), d_result.begin());
d_result.erase(d_end, d_result.end());
ASSERT_EQUAL(h_result, d_result);
}
DECLARE_VARIABLE_UNITTEST(TestSetSymmetricDifferenceMultiset);
template <typename U>
void TestSetSymmetricDifferenceKeyValue(size_t n)
{
typedef key_value<U, U> T;
thrust::host_vector<U> h_keys_a = unittest::random_integers<U>(n);
thrust::host_vector<U> h_values_a = unittest::random_integers<U>(n);
thrust::host_vector<U> h_keys_b = unittest::random_integers<U>(n);
thrust::host_vector<U> h_values_b = unittest::random_integers<U>(n);
thrust::host_vector<T> h_a(n), h_b(n);
for (size_t i = 0; i < n; ++i)
{
h_a[i] = T(h_keys_a[i], h_values_a[i]);
h_b[i] = T(h_keys_b[i], h_values_b[i]);
}
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;
thrust::host_vector<T> h_result(h_a.size() + h_b.size());
thrust::device_vector<T> d_result(h_result.size());
typename thrust::host_vector<T>::iterator h_end;
typename thrust::device_vector<T>::iterator d_end;
h_end = thrust::set_symmetric_difference(h_a.begin(), h_a.end(), h_b.begin(), h_b.end(), h_result.begin());
h_result.erase(h_end, h_result.begin());
d_end = thrust::set_symmetric_difference(d_a.begin(), d_a.end(), d_b.begin(), d_b.end(), d_result.begin());
d_result.erase(d_end, d_result.begin());
ASSERT_EQUAL_QUIET(h_result, d_result);
}
DECLARE_VARIABLE_UNITTEST(TestSetSymmetricDifferenceKeyValue);
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