reverse.pass.cpp
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// -*- C++ -*-
//===-- reverse.pass.cpp --------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
#include "support/pstl_test_config.h"
#include <iterator>
#include <execution>
#include <algorithm>
#include "support/utils.h"
using namespace TestUtils;
struct test_one_policy
{
#if _PSTL_ICC_18_VC141_TEST_SIMD_LAMBDA_RELEASE_BROKEN || _PSTL_ICC_17_VC141_TEST_SIMD_LAMBDA_DEBUG_32_BROKEN || \
_PSTL_ICC_16_VC14_TEST_SIMD_LAMBDA_DEBUG_32_BROKEN // dummy specialization by policy type, in case of broken configuration
template <typename Iterator1, typename Iterator2>
typename std::enable_if<is_same_iterator_category<Iterator1, std::random_access_iterator_tag>::value, void>::type
operator()(pstl::execution::unsequenced_policy, Iterator1 data_b, Iterator1 data_e, Iterator2 actual_b,
Iterator2 actual_e)
{
}
template <typename Iterator1, typename Iterator2>
typename std::enable_if<is_same_iterator_category<Iterator1, std::random_access_iterator_tag>::value, void>::type
operator()(pstl::execution::parallel_unsequenced_policy, Iterator1 data_b, Iterator1 data_e, Iterator2 actual_b,
Iterator2 actual_e)
{
}
#endif
template <typename ExecutionPolicy, typename Iterator1, typename Iterator2>
typename std::enable_if<!is_same_iterator_category<Iterator1, std::forward_iterator_tag>::value>::type
operator()(ExecutionPolicy&& exec, Iterator1 data_b, Iterator1 data_e, Iterator2 actual_b, Iterator2 actual_e)
{
using namespace std;
copy(data_b, data_e, actual_b);
reverse(exec, actual_b, actual_e);
bool check = equal(data_b, data_e, reverse_iterator<Iterator2>(actual_e));
EXPECT_TRUE(check, "wrong result of reverse");
}
template <typename ExecutionPolicy, typename Iterator1, typename Iterator2>
typename std::enable_if<is_same_iterator_category<Iterator1, std::forward_iterator_tag>::value>::type
operator()(ExecutionPolicy&&, Iterator1, Iterator1, Iterator2, Iterator2)
{
}
};
template <typename T>
void
test()
{
const std::size_t max_len = 100000;
Sequence<T> actual(max_len);
Sequence<T> data(max_len, [](std::size_t i) { return T(i); });
for (std::size_t len = 0; len < max_len; len = len <= 16 ? len + 1 : std::size_t(3.1415 * len))
{
invoke_on_all_policies(test_one_policy(), data.begin(), data.begin() + len, actual.begin(),
actual.begin() + len);
}
}
template <typename T>
struct wrapper
{
T t;
wrapper() {}
explicit wrapper(T t_) : t(t_) {}
bool
operator==(const wrapper<T>& a) const
{
return t == a.t;
}
};
int
main()
{
test<int32_t>();
test<uint16_t>();
test<float64_t>();
#if !_PSTL_ICC_17_TEST_MAC_RELEASE_32_BROKEN
test<wrapper<float64_t>>();
#endif
std::cout << done() << std::endl;
return 0;
}