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#include <thrust/functional.h>
#include <thrust/iterator/retag.h>
#include <thrust/sort.h>
#include <unittest/unittest.h>
template <typename RandomAccessIterator1, typename RandomAccessIterator2>
void sort_by_key(my_system& system, RandomAccessIterator1, RandomAccessIterator1, RandomAccessIterator2)
{
system.validate_dispatch();
}
void TestSortByKeyDispatchExplicit()
{
thrust::device_vector<int> vec(1);
my_system sys(0);
thrust::sort_by_key(sys, vec.begin(), vec.begin(), vec.begin());
ASSERT_EQUAL(true, sys.is_valid());
}
DECLARE_UNITTEST(TestSortByKeyDispatchExplicit);
template <typename RandomAccessIterator1, typename RandomAccessIterator2>
void sort_by_key(my_tag, RandomAccessIterator1 keys_first, RandomAccessIterator1, RandomAccessIterator2)
{
*keys_first = 13;
}
void TestSortByKeyDispatchImplicit()
{
thrust::device_vector<int> vec(1);
thrust::sort_by_key(
thrust::retag<my_tag>(vec.begin()), thrust::retag<my_tag>(vec.begin()), thrust::retag<my_tag>(vec.begin()));
ASSERT_EQUAL(13, vec.front());
}
DECLARE_UNITTEST(TestSortByKeyDispatchImplicit);
template <class Vector>
void InitializeSimpleKeyValueSortTest(
Vector& unsorted_keys, Vector& unsorted_values, Vector& sorted_keys, Vector& sorted_values)
{
// clang-format off
unsorted_keys.resize(7);
unsorted_values.resize(7);
unsorted_keys[0] = 1; unsorted_values[0] = 0;
unsorted_keys[1] = 3; unsorted_values[1] = 1;
unsorted_keys[2] = 6; unsorted_values[2] = 2;
unsorted_keys[3] = 5; unsorted_values[3] = 3;
unsorted_keys[4] = 2; unsorted_values[4] = 4;
unsorted_keys[5] = 0; unsorted_values[5] = 5;
unsorted_keys[6] = 4; unsorted_values[6] = 6;
sorted_keys.resize(7);
sorted_values.resize(7);
sorted_keys[0] = 0; sorted_values[1] = 0;
sorted_keys[1] = 1; sorted_values[3] = 1;
sorted_keys[2] = 2; sorted_values[6] = 2;
sorted_keys[3] = 3; sorted_values[5] = 3;
sorted_keys[4] = 4; sorted_values[2] = 4;
sorted_keys[5] = 5; sorted_values[0] = 5;
sorted_keys[6] = 6; sorted_values[4] = 6;
// clang-format on
}
template <class Vector>
void TestSortByKeySimple()
{
Vector unsorted_keys, unsorted_values;
Vector sorted_keys, sorted_values;
InitializeSimpleKeyValueSortTest(unsorted_keys, unsorted_values, sorted_keys, sorted_values);
thrust::sort_by_key(unsorted_keys.begin(), unsorted_keys.end(), unsorted_values.begin());
ASSERT_EQUAL(unsorted_keys, sorted_keys);
ASSERT_EQUAL(unsorted_values, sorted_values);
}
DECLARE_VECTOR_UNITTEST(TestSortByKeySimple);
template <typename T>
void TestSortAscendingKeyValue(const size_t n)
{
thrust::host_vector<T> h_keys = unittest::random_integers<T>(n);
thrust::device_vector<T> d_keys = h_keys;
thrust::host_vector<T> h_values = h_keys;
thrust::device_vector<T> d_values = d_keys;
thrust::sort_by_key(h_keys.begin(), h_keys.end(), h_values.begin(), thrust::less<T>());
thrust::sort_by_key(d_keys.begin(), d_keys.end(), d_values.begin(), thrust::less<T>());
ASSERT_EQUAL(h_keys, d_keys);
ASSERT_EQUAL(h_values, d_values);
}
DECLARE_VARIABLE_UNITTEST(TestSortAscendingKeyValue);
template <typename T>
void TestSortDescendingKeyValue(const size_t n)
{
thrust::host_vector<int> h_keys = unittest::random_integers<int>(n);
thrust::device_vector<int> d_keys = h_keys;
thrust::host_vector<int> h_values = h_keys;
thrust::device_vector<int> d_values = d_keys;
thrust::sort_by_key(h_keys.begin(), h_keys.end(), h_values.begin(), thrust::greater<int>());
thrust::sort_by_key(d_keys.begin(), d_keys.end(), d_values.begin(), thrust::greater<int>());
ASSERT_EQUAL(h_keys, d_keys);
ASSERT_EQUAL(h_values, d_values);
}
DECLARE_VARIABLE_UNITTEST(TestSortDescendingKeyValue);
void TestSortByKeyBool()
{
const size_t n = 10027;
thrust::host_vector<bool> h_keys = unittest::random_integers<bool>(n);
thrust::host_vector<int> h_values = unittest::random_integers<int>(n);
thrust::device_vector<bool> d_keys = h_keys;
thrust::device_vector<int> d_values = h_values;
thrust::sort_by_key(h_keys.begin(), h_keys.end(), h_values.begin());
thrust::sort_by_key(d_keys.begin(), d_keys.end(), d_values.begin());
ASSERT_EQUAL(h_keys, d_keys);
ASSERT_EQUAL(h_values, d_values);
}
DECLARE_UNITTEST(TestSortByKeyBool);
void TestSortByKeyBoolDescending()
{
const size_t n = 10027;
thrust::host_vector<bool> h_keys = unittest::random_integers<bool>(n);
thrust::host_vector<int> h_values = unittest::random_integers<int>(n);
thrust::device_vector<bool> d_keys = h_keys;
thrust::device_vector<int> d_values = h_values;
thrust::sort_by_key(h_keys.begin(), h_keys.end(), h_values.begin(), thrust::greater<bool>());
thrust::sort_by_key(d_keys.begin(), d_keys.end(), d_values.begin(), thrust::greater<bool>());
ASSERT_EQUAL(h_keys, d_keys);
ASSERT_EQUAL(h_values, d_values);
}
DECLARE_UNITTEST(TestSortByKeyBoolDescending);
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