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#include <thrust/execution_policy.h>
#include <thrust/set_operations.h>
#include <unittest/unittest.h>
#ifdef THRUST_TEST_DEVICE_SIDE
template <typename ExecutionPolicy, typename Iterator1, typename Iterator2, typename Iterator3, typename Iterator4>
__global__ void set_symmetric_difference_kernel(
ExecutionPolicy exec,
Iterator1 first1,
Iterator1 last1,
Iterator2 first2,
Iterator2 last2,
Iterator3 result1,
Iterator4 result2)
{
*result2 = thrust::set_symmetric_difference(exec, first1, last1, first2, last2, result1);
}
template <typename ExecutionPolicy>
void TestSetSymmetricDifferenceDevice(ExecutionPolicy exec)
{
typedef thrust::device_vector<int> Vector;
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);
thrust::device_vector<Iterator> end_vec(1);
set_symmetric_difference_kernel<<<1, 1>>>(
exec, a.begin(), a.end(), b.begin(), b.end(), result.begin(), end_vec.begin());
cudaError_t const err = cudaDeviceSynchronize();
ASSERT_EQUAL(cudaSuccess, err);
Iterator end = end_vec[0];
ASSERT_EQUAL_QUIET(result.end(), end);
ASSERT_EQUAL(ref, result);
}
void TestSetSymmetricDifferenceDeviceSeq()
{
TestSetSymmetricDifferenceDevice(thrust::seq);
}
DECLARE_UNITTEST(TestSetSymmetricDifferenceDeviceSeq);
void TestSetSymmetricDifferenceDeviceDevice()
{
TestSetSymmetricDifferenceDevice(thrust::device);
}
DECLARE_UNITTEST(TestSetSymmetricDifferenceDeviceDevice);
#endif
void TestSetSymmetricDifferenceCudaStreams()
{
typedef thrust::device_vector<int> Vector;
typedef 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);
cudaStream_t s;
cudaStreamCreate(&s);
Iterator end =
thrust::set_symmetric_difference(thrust::cuda::par.on(s), a.begin(), a.end(), b.begin(), b.end(), result.begin());
cudaStreamSynchronize(s);
ASSERT_EQUAL_QUIET(result.end(), end);
ASSERT_EQUAL(ref, result);
cudaStreamDestroy(s);
}
DECLARE_UNITTEST(TestSetSymmetricDifferenceCudaStreams);
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