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#include <thrust/detail/config.h>
#if !defined(THRUST_LEGACY_GCC)
# include <thrust/device_vector.h>
# include <thrust/iterator/zip_iterator.h>
# include <thrust/remove.h>
# include <thrust/sort.h>
# include <thrust/transform.h>
# include <thrust/zip_function.h>
# include <iostream>
# include <unittest/unittest.h>
using namespace unittest;
struct SumThree
{
template <typename T1, typename T2, typename T3>
THRUST_HOST_DEVICE auto operator()(T1 x, T2 y, T3 z) const THRUST_DECLTYPE_RETURNS(x + y + z)
}; // end SumThree
struct SumThreeTuple
{
template <typename Tuple>
THRUST_HOST_DEVICE auto operator()(Tuple x) const
THRUST_DECLTYPE_RETURNS(thrust::get<0>(x) + thrust::get<1>(x) + thrust::get<2>(x))
}; // end SumThreeTuple
template <typename T>
struct TestZipFunctionCtor
{
void operator()()
{
ASSERT_EQUAL(thrust::zip_function<SumThree>()(thrust::make_tuple(1, 2, 3)), SumThree{}(1, 2, 3));
ASSERT_EQUAL(thrust::zip_function<SumThree>(SumThree{})(thrust::make_tuple(1, 2, 3)), SumThree{}(1, 2, 3));
# ifdef __cpp_deduction_guides
ASSERT_EQUAL(thrust::zip_function(SumThree{})(thrust::make_tuple(1, 2, 3)), SumThree{}(1, 2, 3));
# endif // __cpp_deduction_guides
}
};
SimpleUnitTest<TestZipFunctionCtor, type_list<int>> TestZipFunctionCtorInstance;
template <typename T>
struct TestZipFunctionTransform
{
void operator()(const size_t n)
{
using namespace thrust;
host_vector<T> h_data0 = unittest::random_samples<T>(n);
host_vector<T> h_data1 = unittest::random_samples<T>(n);
host_vector<T> h_data2 = unittest::random_samples<T>(n);
device_vector<T> d_data0 = h_data0;
device_vector<T> d_data1 = h_data1;
device_vector<T> d_data2 = h_data2;
host_vector<T> h_result_tuple(n);
host_vector<T> h_result_zip(n);
device_vector<T> d_result_zip(n);
// Tuple base case
transform(make_zip_iterator(make_tuple(h_data0.begin(), h_data1.begin(), h_data2.begin())),
make_zip_iterator(make_tuple(h_data0.end(), h_data1.end(), h_data2.end())),
h_result_tuple.begin(),
SumThreeTuple{});
// Zip Function
transform(make_zip_iterator(make_tuple(h_data0.begin(), h_data1.begin(), h_data2.begin())),
make_zip_iterator(make_tuple(h_data0.end(), h_data1.end(), h_data2.end())),
h_result_zip.begin(),
make_zip_function(SumThree{}));
transform(make_zip_iterator(make_tuple(d_data0.begin(), d_data1.begin(), d_data2.begin())),
make_zip_iterator(make_tuple(d_data0.end(), d_data1.end(), d_data2.end())),
d_result_zip.begin(),
make_zip_function(SumThree{}));
ASSERT_EQUAL(h_result_tuple, h_result_zip);
ASSERT_EQUAL(h_result_tuple, d_result_zip);
}
};
VariableUnitTest<TestZipFunctionTransform, ThirtyTwoBitTypes> TestZipFunctionTransformInstance;
struct RemovePred
{
THRUST_HOST_DEVICE bool operator()(const thrust::tuple<uint32_t, uint32_t>& ele1, const float&)
{
return thrust::get<0>(ele1) == thrust::get<1>(ele1);
}
};
template <typename T>
struct TestZipFunctionMixed
{
void operator()()
{
thrust::device_vector<uint32_t> vecA{0, 0, 2, 0};
thrust::device_vector<uint32_t> vecB{0, 2, 2, 2};
thrust::device_vector<float> vecC{88.0f, 88.0f, 89.0f, 89.0f};
thrust::device_vector<float> expected{88.0f, 89.0f};
auto inputKeyItBegin =
thrust::make_zip_iterator(thrust::make_zip_iterator(vecA.begin(), vecB.begin()), vecC.begin());
auto endIt =
thrust::remove_if(inputKeyItBegin, inputKeyItBegin + vecA.size(), thrust::make_zip_function(RemovePred{}));
auto numEle = endIt - inputKeyItBegin;
vecA.resize(numEle);
vecB.resize(numEle);
vecC.resize(numEle);
ASSERT_EQUAL(numEle, 2);
ASSERT_EQUAL(vecC, expected);
}
};
SimpleUnitTest<TestZipFunctionMixed, type_list<int, float> > TestZipFunctionMixedInstance;
struct NestedFunctionCall
{
THRUST_HOST_DEVICE bool
operator()(const thrust::tuple<uint32_t, thrust::tuple<thrust::tuple<int, int>, thrust::tuple<int, int>>>& idAndPt)
{
thrust::tuple<thrust::tuple<int, int>, thrust::tuple<int, int>> ele1 = thrust::get<1>(idAndPt);
thrust::tuple<int, int> p1 = thrust::get<0>(ele1);
thrust::tuple<int, int> p2 = thrust::get<1>(ele1);
return thrust::get<0>(p1) == thrust::get<0>(p2) || thrust::get<1>(p1) == thrust::get<1>(p2);
}
};
template <typename T>
struct TestNestedZipFunction
{
void operator()()
{
thrust::device_vector<int> PX{0, 1, 2, 3};
thrust::device_vector<int> PY{0, 1, 2, 2};
thrust::device_vector<uint32_t> SS{0, 1, 2};
thrust::device_vector<uint32_t> ST{1, 2, 3};
thrust::device_vector<float> vecC{88.0f, 88.0f, 89.0f, 89.0f};
auto segIt = thrust::make_zip_iterator(
thrust::make_zip_iterator(thrust::make_permutation_iterator(PX.begin(), SS.begin()),
thrust::make_permutation_iterator(PY.begin(), SS.begin())),
thrust::make_zip_iterator(thrust::make_permutation_iterator(PX.begin(), ST.begin()),
thrust::make_permutation_iterator(PY.begin(), ST.begin())));
auto idAndSegIt = thrust::make_zip_iterator(thrust::make_counting_iterator(0u), segIt);
thrust::device_vector<bool> isMH{false, false, false};
thrust::device_vector<bool> expected{false, false, true};
thrust::transform(idAndSegIt, idAndSegIt + SS.size(), isMH.begin(), NestedFunctionCall{});
ASSERT_EQUAL(isMH, expected);
}
};
SimpleUnitTest<TestNestedZipFunction, type_list<int, float> > TestNestedZipFunctionInstance;
struct SortPred
{
THRUST_DEVICE __forceinline__ bool
operator()(const thrust::tuple<thrust::tuple<int, int>, int>& a, const thrust::tuple<thrust::tuple<int, int>, int>& b)
{
return thrust::get<1>(a) < thrust::get<1>(b);
}
};
#if THRUST_DEVICE_SYSTEM == THRUST_DEVICE_SYSTEM_CUDA
template <typename T>
struct TestNestedZipFunction2
{
void operator()()
{
thrust::device_vector<int> A(5);
thrust::device_vector<int> B(5);
thrust::device_vector<int> C(5);
auto n = A.size();
auto tupleIt = thrust::make_zip_iterator(cuda::std::begin(A), cuda::std::begin(B));
auto nestedTupleIt = thrust::make_zip_iterator(tupleIt, cuda::std::begin(C));
thrust::sort(nestedTupleIt, nestedTupleIt + n, SortPred{});
}
};
SimpleUnitTest<TestNestedZipFunction2, type_list<int, float> > TestNestedZipFunctionInstance2;
#endif // THRUST_DEVICE_SYSTEM == THRUST_DEVICE_SYSTEM_CUDA
#endif // !THRUST_LEGACY_GCC
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