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#include <thrust/reduce.h>
#include <thrust/transform.h>
#include <thrust/tuple.h>
#include <unittest/unittest.h>
using namespace unittest;
struct SumTupleFunctor
{
template <typename Tuple>
_CCCL_HOST_DEVICE Tuple operator()(const Tuple& lhs, const Tuple& rhs)
{
using thrust::get;
return thrust::make_tuple(get<0>(lhs) + get<0>(rhs), get<1>(lhs) + get<1>(rhs));
}
};
struct MakeTupleFunctor
{
template <typename T1, typename T2>
_CCCL_HOST_DEVICE thrust::tuple<T1, T2> operator()(T1& lhs, T2& rhs)
{
return thrust::make_tuple(lhs, rhs);
}
};
template <typename T>
struct TestTupleReduce
{
void operator()(const size_t n)
{
using namespace thrust;
host_vector<T> h_t1 = random_integers<T>(n);
host_vector<T> h_t2 = random_integers<T>(n);
// zip up the data
host_vector<tuple<T, T>> h_tuples(n);
transform(h_t1.begin(), h_t1.end(), h_t2.begin(), h_tuples.begin(), MakeTupleFunctor());
// copy to device
device_vector<tuple<T, T>> d_tuples = h_tuples;
tuple<T, T> zero(0, 0);
// sum on host
tuple<T, T> h_result = reduce(h_tuples.begin(), h_tuples.end(), zero, SumTupleFunctor());
// sum on device
tuple<T, T> d_result = reduce(d_tuples.begin(), d_tuples.end(), zero, SumTupleFunctor());
ASSERT_EQUAL_QUIET(h_result, d_result);
}
};
VariableUnitTest<TestTupleReduce, IntegralTypes> TestTupleReduceInstance;
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