1 // -*- C++ -*- 2 //===-- merge.pass.cpp ----------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "support/pstl_test_config.h" 11 12 #include <execution> 13 #include <algorithm> 14 #include <functional> 15 16 #include "support/utils.h" 17 18 using namespace TestUtils; 19 20 struct test_merge 21 { 22 template <typename Policy, typename InputIterator1, typename InputIterator2, typename OutputIterator, 23 typename Compare> 24 void 25 operator()(Policy&& exec, InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2, 26 OutputIterator out_first, OutputIterator out_last, Compare comp) 27 { 28 using namespace std; 29 { 30 const auto res = merge(exec, first1, last1, first2, last2, out_first, comp); 31 EXPECT_TRUE(res == out_last, "wrong return result from merge with predicate"); 32 EXPECT_TRUE(is_sorted(out_first, res, comp), "wrong result from merge with predicate"); 33 EXPECT_TRUE(includes(out_first, res, first1, last1, comp), "first sequence is not a part of result"); 34 EXPECT_TRUE(includes(out_first, res, first2, last2, comp), "second sequence is not a part of result"); 35 } 36 { 37 const auto res = merge(exec, first1, last1, first2, last2, out_first); 38 EXPECT_TRUE(res == out_last, "wrong return result from merge"); 39 EXPECT_TRUE(is_sorted(out_first, res), "wrong result from merge"); 40 } 41 } 42 43 // for reverse iterators 44 template <typename Policy, typename InputIterator1, typename InputIterator2, typename OutputIterator, 45 typename Compare> 46 void 47 operator()(Policy&& exec, std::reverse_iterator<InputIterator1> first1, std::reverse_iterator<InputIterator1> last1, 48 std::reverse_iterator<InputIterator2> first2, std::reverse_iterator<InputIterator2> last2, 49 std::reverse_iterator<OutputIterator> out_first, std::reverse_iterator<OutputIterator> out_last, 50 Compare) 51 { 52 using namespace std; 53 typedef typename std::iterator_traits<std::reverse_iterator<InputIterator1>>::value_type T; 54 const auto res = merge(exec, first1, last1, first2, last2, out_first, std::greater<T>()); 55 56 EXPECT_TRUE(res == out_last, "wrong return result from merge with predicate"); 57 EXPECT_TRUE(is_sorted(out_first, res, std::greater<T>()), "wrong result from merge with predicate"); 58 EXPECT_TRUE(includes(out_first, res, first1, last1, std::greater<T>()), 59 "first sequence is not a part of result"); 60 EXPECT_TRUE(includes(out_first, res, first2, last2, std::greater<T>()), 61 "second sequence is not a part of result"); 62 } 63 }; 64 65 template <typename T, typename Generator1, typename Generator2> 66 void 67 test_merge_by_type(Generator1 generator1, Generator2 generator2) 68 { 69 using namespace std; 70 size_t max_size = 100000; 71 Sequence<T> in1(max_size, generator1); 72 Sequence<T> in2(max_size / 2, generator2); 73 Sequence<T> out(in1.size() + in2.size()); 74 std::sort(in1.begin(), in1.end()); 75 std::sort(in2.begin(), in2.end()); 76 77 for (size_t size = 0; size <= max_size; size = size <= 16 ? size + 1 : size_t(3.1415 * size)) 78 { 79 invoke_on_all_policies(test_merge(), in1.cbegin(), in1.cbegin() + size, in2.data(), in2.data() + size / 2, 80 out.begin(), out.begin() + 1.5 * size, std::less<T>()); 81 invoke_on_all_policies(test_merge(), in1.data(), in1.data() + size, in2.cbegin(), in2.cbegin() + size / 2, 82 out.begin(), out.begin() + 3 * size / 2, std::less<T>()); 83 } 84 } 85 86 template <typename T> 87 struct test_non_const 88 { 89 template <typename Policy, typename InputIterator, typename OutputIterator> 90 void 91 operator()(Policy&& exec, InputIterator input_iter, OutputIterator out_iter) 92 { 93 merge(exec, input_iter, input_iter, input_iter, input_iter, out_iter, non_const(std::less<T>())); 94 } 95 }; 96 97 int32_t 98 main() 99 { 100 test_merge_by_type<int32_t>([](size_t v) { return (v % 2 == 0 ? v : -v) * 3; }, [](size_t v) { return v * 2; }); 101 test_merge_by_type<float64_t>([](size_t v) { return float64_t(v); }, [](size_t v) { return float64_t(v - 100); }); 102 103 #if !_PSTL_ICC_16_17_TEST_64_TIMEOUT 104 test_merge_by_type<Wrapper<int16_t>>([](size_t v) { return Wrapper<int16_t>(v % 100); }, 105 [](size_t v) { return Wrapper<int16_t>(v % 10); }); 106 #endif 107 108 test_algo_basic_double<int32_t>(run_for_rnd_fw<test_non_const<int32_t>>()); 109 110 std::cout << done() << std::endl; 111 return 0; 112 } 113