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#include <thrust/device_ptr.h>
#include <thrust/device_vector.h>
#include <unittest/unittest.h>
void TestDevicePointerManipulation()
{
thrust::device_vector<int> data(5);
thrust::device_ptr<int> begin(&data[0]);
thrust::device_ptr<int> end(&data[0] + 5);
ASSERT_EQUAL(end - begin, 5);
begin++;
begin--;
ASSERT_EQUAL(end - begin, 5);
begin += 1;
begin -= 1;
ASSERT_EQUAL(end - begin, 5);
begin = begin + (int) 1;
begin = begin - (int) 1;
ASSERT_EQUAL(end - begin, 5);
begin = begin + (unsigned int) 1;
begin = begin - (unsigned int) 1;
ASSERT_EQUAL(end - begin, 5);
begin = begin + (size_t) 1;
begin = begin - (size_t) 1;
ASSERT_EQUAL(end - begin, 5);
begin = begin + (ptrdiff_t) 1;
begin = begin - (ptrdiff_t) 1;
ASSERT_EQUAL(end - begin, 5);
begin = begin + (thrust::device_ptr<int>::difference_type) 1;
begin = begin - (thrust::device_ptr<int>::difference_type) 1;
ASSERT_EQUAL(end - begin, 5);
}
DECLARE_UNITTEST(TestDevicePointerManipulation);
void TestMakeDevicePointer()
{
typedef int T;
T* raw_ptr = 0;
thrust::device_ptr<T> p0 = thrust::device_pointer_cast(raw_ptr);
ASSERT_EQUAL(thrust::raw_pointer_cast(p0), raw_ptr);
thrust::device_ptr<T> p1 = thrust::device_pointer_cast(p0);
ASSERT_EQUAL(p0, p1);
}
DECLARE_UNITTEST(TestMakeDevicePointer);
template <typename Vector>
void TestRawPointerCast()
{
typedef typename Vector::value_type T;
Vector vec(3);
T* first;
T* last;
first = thrust::raw_pointer_cast(&vec[0]);
last = thrust::raw_pointer_cast(&vec[3]);
ASSERT_EQUAL(last - first, 3);
first = thrust::raw_pointer_cast(&vec.front());
last = thrust::raw_pointer_cast(&vec.back());
ASSERT_EQUAL(last - first, 2);
// Do we want these to work?
// first = thrust::raw_pointer_cast(vec.begin());
// last = thrust::raw_pointer_cast(vec.end());
// ASSERT_EQUAL(last - first, 3);
}
DECLARE_VECTOR_UNITTEST(TestRawPointerCast);
template <typename T>
void TestDevicePointerNullptrCompatibility()
{
thrust::device_ptr<T> p0(nullptr);
ASSERT_EQUAL_QUIET(nullptr, p0);
ASSERT_EQUAL_QUIET(p0, nullptr);
p0 = nullptr;
ASSERT_EQUAL_QUIET(nullptr, p0);
ASSERT_EQUAL_QUIET(p0, nullptr);
}
DECLARE_GENERIC_UNITTEST(TestDevicePointerNullptrCompatibility);
template <typename T>
void TestDevicePointerBoolConversion()
{
thrust::device_ptr<T> p0(nullptr);
auto const b = bool(p0);
ASSERT_EQUAL_QUIET(false, b);
}
DECLARE_GENERIC_UNITTEST(TestDevicePointerBoolConversion);
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