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#include <thrust/pair.h>
#include <thrust/sequence.h>
#include <thrust/sort.h>
#include <unittest/unittest.h>
struct make_pair_functor
{
template <typename T1, typename T2>
_CCCL_HOST_DEVICE thrust::pair<T1, T2> operator()(const T1& x, const T2& y)
{
return thrust::make_pair(x, y);
} // end operator()()
}; // end make_pair_functor
template <typename T>
struct TestPairStableSortByKey
{
void operator()(const size_t n)
{
typedef thrust::pair<T, T> P;
// host arrays
thrust::host_vector<T> h_p1 = unittest::random_integers<T>(n);
thrust::host_vector<T> h_p2 = unittest::random_integers<T>(n);
thrust::host_vector<P> h_pairs(n);
thrust::host_vector<int> h_values(n);
thrust::sequence(h_values.begin(), h_values.end());
// zip up pairs on the host
thrust::transform(h_p1.begin(), h_p1.end(), h_p2.begin(), h_pairs.begin(), make_pair_functor());
// device arrays
thrust::device_vector<P> d_pairs = h_pairs;
thrust::device_vector<int> d_values = h_values;
// sort on the host
thrust::stable_sort_by_key(h_pairs.begin(), h_pairs.end(), h_values.begin());
// sort on the device
thrust::stable_sort_by_key(d_pairs.begin(), d_pairs.end(), d_values.begin());
ASSERT_EQUAL_QUIET(h_pairs, d_pairs);
ASSERT_EQUAL(h_values, d_values);
}
};
VariableUnitTest<TestPairStableSortByKey, unittest::type_list<unittest::int8_t, unittest::int16_t, unittest::int32_t>>
TestPairStableSortByKeyInstance;
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