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#include <thrust/iterator/zip_iterator.h>
#include <thrust/sort.h>
#include <unittest/unittest.h>
template <typename T>
struct TestZipIteratorStableSortByKey
{
void operator()(const size_t n)
{
using namespace thrust;
host_vector<T> h1 = unittest::random_integers<T>(n);
host_vector<T> h2 = unittest::random_integers<T>(n);
host_vector<T> h3 = unittest::random_integers<T>(n);
host_vector<T> h4 = unittest::random_integers<T>(n);
device_vector<T> d1 = h1;
device_vector<T> d2 = h2;
device_vector<T> d3 = h3;
device_vector<T> d4 = h4;
// sort with (tuple, scalar)
stable_sort_by_key(make_zip_iterator(make_tuple(h1.begin(), h2.begin())),
make_zip_iterator(make_tuple(h1.end(), h2.end())),
h3.begin());
stable_sort_by_key(make_zip_iterator(make_tuple(d1.begin(), d2.begin())),
make_zip_iterator(make_tuple(d1.end(), d2.end())),
d3.begin());
ASSERT_EQUAL_QUIET(h1, d1);
ASSERT_EQUAL_QUIET(h2, d2);
ASSERT_EQUAL_QUIET(h3, d3);
ASSERT_EQUAL_QUIET(h4, d4);
// sort with (scalar, tuple)
stable_sort_by_key(h1.begin(), h1.end(), make_zip_iterator(make_tuple(h3.begin(), h4.begin())));
stable_sort_by_key(d1.begin(), d1.end(), make_zip_iterator(make_tuple(d3.begin(), d4.begin())));
// sort with (tuple, tuple)
stable_sort_by_key(make_zip_iterator(make_tuple(h1.begin(), h2.begin())),
make_zip_iterator(make_tuple(h1.end(), h2.end())),
make_zip_iterator(make_tuple(h3.begin(), h4.begin())));
stable_sort_by_key(make_zip_iterator(make_tuple(d1.begin(), d2.begin())),
make_zip_iterator(make_tuple(d1.end(), d2.end())),
make_zip_iterator(make_tuple(d3.begin(), d4.begin())));
ASSERT_EQUAL_QUIET(h1, d1);
ASSERT_EQUAL_QUIET(h2, d2);
ASSERT_EQUAL_QUIET(h3, d3);
ASSERT_EQUAL_QUIET(h4, d4);
}
};
VariableUnitTest<TestZipIteratorStableSortByKey,
unittest::type_list<unittest::int8_t, unittest::int16_t, unittest::int32_t>>
TestZipIteratorStableSortByKeyInstance;
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