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/*
* Copyright 2008-2013 NVIDIA Corporation
* Modifications Copyright© 2019 Advanced Micro Devices, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <thrust/pair.h>
#include <thrust/sequence.h>
#include <thrust/sort.h>
#include "test_header.hpp"
TESTS_DEFINE(PairSortTests, NumericalTestsParams);
struct make_pair_functor
{
template <typename T1, typename T2>
__host__ __device__ thrust::pair<T1, T2> operator()(const T1& x, const T2& y)
{
return thrust::make_pair(x, y);
} // end operator()()
}; // end make_pair_functor
TYPED_TEST(PairSortTests, TestPairStableSortByKey)
{
using T = typename TestFixture::input_type;
using P = thrust::pair<T, T>;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
for(auto size : get_sizes())
{
SCOPED_TRACE(testing::Message() << "with size= " << size);
for(auto seed : get_seeds())
{
SCOPED_TRACE(testing::Message() << "with seed= " << seed);
thrust::host_vector<T> h_p1 = get_random_data<T>(
size, std::numeric_limits<T>::min(), std::numeric_limits<T>::max(), seed);
thrust::host_vector<T> h_p2 = get_random_data<T>(
size,
std::numeric_limits<T>::min(),
std::numeric_limits<T>::max(),
seed + seed_value_addition
);
thrust::host_vector<P> h_pairs(size);
thrust::host_vector<int> h_values(size);
thrust::sequence(h_values.begin(), h_values.end());
// zip up pairs on the host
thrust::transform(
h_p1.begin(), h_p1.end(), h_p2.begin(), h_pairs.begin(), make_pair_functor());
// device arrays
thrust::device_vector<P> d_pairs = h_pairs;
thrust::device_vector<int> d_values = h_values;
// sort on the host
thrust::stable_sort_by_key(h_pairs.begin(), h_pairs.end(), h_values.begin());
// sort on the device
thrust::stable_sort_by_key(d_pairs.begin(), d_pairs.end(), d_values.begin());
ASSERT_EQ_QUIET(h_pairs, d_pairs);
ASSERT_EQ_QUIET(h_values, d_values);
}
}
}
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