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#include <thrust/iterator/discard_iterator.h>
#include <thrust/iterator/retag.h>
#include <thrust/sequence.h>
#include <unittest/unittest.h>
template <typename ForwardIterator>
void sequence(my_system& system, ForwardIterator, ForwardIterator)
{
system.validate_dispatch();
}
void TestSequenceDispatchExplicit()
{
thrust::device_vector<int> vec(1);
my_system sys(0);
thrust::sequence(sys, vec.begin(), vec.end());
ASSERT_EQUAL(true, sys.is_valid());
}
DECLARE_UNITTEST(TestSequenceDispatchExplicit);
template <typename ForwardIterator>
void sequence(my_tag, ForwardIterator first, ForwardIterator)
{
*first = 13;
}
void TestSequenceDispatchImplicit()
{
thrust::device_vector<int> vec(1);
thrust::sequence(thrust::retag<my_tag>(vec.begin()), thrust::retag<my_tag>(vec.end()));
ASSERT_EQUAL(13, vec.front());
}
DECLARE_UNITTEST(TestSequenceDispatchImplicit);
template <class Vector>
void TestSequenceSimple()
{
using value_type = typename Vector::value_type;
Vector v(5);
thrust::sequence(v.begin(), v.end());
ASSERT_EQUAL(v[0], 0);
ASSERT_EQUAL(v[1], 1);
ASSERT_EQUAL(v[2], 2);
ASSERT_EQUAL(v[3], 3);
ASSERT_EQUAL(v[4], 4);
thrust::sequence(v.begin(), v.end(), value_type{10});
ASSERT_EQUAL(v[0], 10);
ASSERT_EQUAL(v[1], 11);
ASSERT_EQUAL(v[2], 12);
ASSERT_EQUAL(v[3], 13);
ASSERT_EQUAL(v[4], 14);
thrust::sequence(v.begin(), v.end(), value_type{10}, value_type{2});
ASSERT_EQUAL(v[0], 10);
ASSERT_EQUAL(v[1], 12);
ASSERT_EQUAL(v[2], 14);
ASSERT_EQUAL(v[3], 16);
ASSERT_EQUAL(v[4], 18);
}
DECLARE_VECTOR_UNITTEST(TestSequenceSimple);
template <typename T>
void TestSequence(size_t n)
{
thrust::host_vector<T> h_data(n);
thrust::device_vector<T> d_data(n);
thrust::sequence(h_data.begin(), h_data.end());
thrust::sequence(d_data.begin(), d_data.end());
ASSERT_EQUAL(h_data, d_data);
thrust::sequence(h_data.begin(), h_data.end(), T(10));
thrust::sequence(d_data.begin(), d_data.end(), T(10));
ASSERT_EQUAL(h_data, d_data);
thrust::sequence(h_data.begin(), h_data.end(), T(10), T(2));
thrust::sequence(d_data.begin(), d_data.end(), T(10), T(2));
ASSERT_EQUAL(h_data, d_data);
thrust::sequence(h_data.begin(), h_data.end(), T(10), T(2));
thrust::sequence(d_data.begin(), d_data.end(), T(10), T(2));
ASSERT_EQUAL(h_data, d_data);
}
DECLARE_VARIABLE_UNITTEST(TestSequence);
template <typename T>
void TestSequenceToDiscardIterator(size_t n)
{
thrust::host_vector<T> h_data(n);
thrust::device_vector<T> d_data(n);
thrust::sequence(thrust::discard_iterator<thrust::device_system_tag>(),
thrust::discard_iterator<thrust::device_system_tag>(13),
T(10),
T(2));
// nothing to check -- just make sure it compiles
}
DECLARE_VARIABLE_UNITTEST(TestSequenceToDiscardIterator);
void TestSequenceComplex()
{
thrust::device_vector<thrust::complex<double>> m(64);
thrust::sequence(m.begin(), m.end());
}
DECLARE_UNITTEST(TestSequenceComplex);
// A class that doesnt accept conversion from size_t but can be multiplied by a scalar
struct Vector
{
Vector() = default;
// Explicitly disable construction from size_t
Vector(std::size_t) = delete;
_CCCL_HOST_DEVICE Vector(int x_, int y_)
: x{x_}
, y{y_}
{}
Vector(const Vector&) = default;
Vector& operator=(const Vector&) = default;
int x, y;
};
// Vector-Vector addition
_CCCL_HOST_DEVICE Vector operator+(const Vector a, const Vector b)
{
return Vector{a.x + b.x, a.y + b.y};
}
// Vector-Scalar Multiplication
// Multiplication by std::size_t is required by thrust::sequence.
_CCCL_HOST_DEVICE Vector operator*(const std::size_t a, const Vector b)
{
return Vector{static_cast<int>(a) * b.x, static_cast<int>(a) * b.y};
}
_CCCL_HOST_DEVICE Vector operator*(const Vector b, const std::size_t a)
{
return Vector{static_cast<int>(a) * b.x, static_cast<int>(a) * b.y};
}
void TestSequenceNoSizeTConversion()
{
thrust::device_vector<Vector> m(64);
thrust::sequence(m.begin(), m.end(), ::Vector{0, 0}, ::Vector{1, 2});
for (std::size_t i = 0; i < m.size(); ++i)
{
const ::Vector v = m[i];
ASSERT_EQUAL(static_cast<std::size_t>(v.x), i);
ASSERT_EQUAL(static_cast<std::size_t>(v.y), 2 * i);
}
}
DECLARE_UNITTEST(TestSequenceNoSizeTConversion);
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