1 // -*- C++ -*- 2 //===-- inplace_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 // UNSUPPORTED: c++98, c++03, c++11, c++14 11 12 #include "support/pstl_test_config.h" 13 14 #include <execution> 15 #include <algorithm> 16 17 #include "support/utils.h" 18 19 using namespace TestUtils; 20 21 struct test_one_policy 22 { 23 #if _PSTL_ICC_17_VC141_TEST_SIMD_LAMBDA_DEBUG_32_BROKEN || \ 24 _PSTL_ICC_16_VC14_TEST_SIMD_LAMBDA_DEBUG_32_BROKEN // dummy specialization by policy type, in case of broken configuration 25 template <typename BiDirIt1, typename Size, typename Generator1, typename Generator2, typename Compare> 26 void 27 operator()(pstl::execution::unsequenced_policy, BiDirIt1 first1, BiDirIt1 last1, BiDirIt1 first2, BiDirIt1 last2, 28 Size n, Size m, Generator1 generator1, Generator2 generator2, Compare comp) 29 { 30 } 31 32 template <typename BiDirIt1, typename Size, typename Generator1, typename Generator2, typename Compare> 33 void 34 operator()(pstl::execution::parallel_unsequenced_policy, BiDirIt1 first1, BiDirIt1 last1, BiDirIt1 first2, 35 BiDirIt1 last2, Size n, Size m, Generator1 generator1, Generator2 generator2, Compare comp) 36 { 37 } 38 #endif 39 40 // inplace_merge works with bidirectional iterators at least 41 template <typename Policy, typename BiDirIt1, typename Size, typename Generator1, typename Generator2, 42 typename Compare> 43 typename std::enable_if<!is_same_iterator_category<BiDirIt1, std::forward_iterator_tag>::value, void>::type 44 operator()(Policy&& exec, BiDirIt1 first1, BiDirIt1 last1, BiDirIt1 first2, BiDirIt1 last2, Size n, Size m, 45 Generator1 generator1, Generator2 generator2, Compare comp) 46 { 47 const BiDirIt1 mid1 = std::next(first1, m); 48 fill_data(first1, mid1, generator1); 49 fill_data(mid1, last1, generator2); 50 51 const BiDirIt1 mid2 = std::next(first2, m); 52 fill_data(first2, mid2, generator1); 53 fill_data(mid2, last2, generator2); 54 55 std::inplace_merge(first1, mid1, last1, comp); 56 std::inplace_merge(exec, first2, mid2, last2, comp); 57 EXPECT_EQ_N(first1, first2, n, "wrong effect from inplace_merge with predicate"); 58 } 59 60 template <typename Policy, typename BiDirIt1, typename Size, typename Generator1, typename Generator2, 61 typename Compare> 62 typename std::enable_if<is_same_iterator_category<BiDirIt1, std::forward_iterator_tag>::value, void>::type 63 operator()(Policy&&, BiDirIt1, BiDirIt1, BiDirIt1, BiDirIt1, Size, Size, 64 Generator1, Generator2, Compare) 65 { 66 } 67 }; 68 69 template <typename T, typename Generator1, typename Generator2, typename Compare> 70 void 71 test_by_type(Generator1 generator1, Generator2 generator2, Compare comp) 72 { 73 using namespace std; 74 size_t max_size = 100000; 75 Sequence<T> in1(max_size, [](size_t v) { return T(v); }); 76 Sequence<T> exp(max_size, [](size_t v) { return T(v); }); 77 size_t m; 78 79 for (size_t n = 0; n <= max_size; n = n <= 16 ? n + 1 : size_t(3.1415 * n)) 80 { 81 m = 0; 82 invoke_on_all_policies(test_one_policy(), in1.begin(), in1.begin() + n, exp.begin(), exp.begin() + n, n, m, 83 generator1, generator2, comp); 84 85 m = n / 3; 86 invoke_on_all_policies(test_one_policy(), in1.begin(), in1.begin() + n, exp.begin(), exp.begin() + n, n, m, 87 generator1, generator2, comp); 88 89 m = 2 * n / 3; 90 invoke_on_all_policies(test_one_policy(), in1.begin(), in1.begin() + n, exp.begin(), exp.begin() + n, n, m, 91 generator1, generator2, comp); 92 } 93 } 94 95 template <typename T> 96 struct LocalWrapper 97 { 98 explicit LocalWrapper(int32_t k) : my_val(k) {} 99 LocalWrapper(LocalWrapper&& input) { my_val = std::move(input.my_val); } 100 LocalWrapper& 101 operator=(LocalWrapper&& input) 102 { 103 my_val = std::move(input.my_val); 104 return *this; 105 } 106 bool 107 operator<(const LocalWrapper<T>& w) const 108 { 109 return my_val < w.my_val; 110 } 111 friend bool 112 operator==(const LocalWrapper<T>& x, const LocalWrapper<T>& y) 113 { 114 return x.my_val == y.my_val; 115 } 116 friend std::ostream& 117 operator<<(std::ostream& stream, const LocalWrapper<T>& input) 118 { 119 return stream << input.my_val; 120 } 121 122 private: 123 T my_val; 124 }; 125 126 template <typename T> 127 struct test_non_const 128 { 129 template <typename Policy, typename Iterator> 130 void 131 operator()(Policy&& exec, Iterator iter) 132 { 133 invoke_if(exec, [&]() { inplace_merge(exec, iter, iter, iter, non_const(std::less<T>())); }); 134 } 135 }; 136 137 int 138 main() 139 { 140 test_by_type<float64_t>([](int32_t i) { return -2 * i; }, [](int32_t i) { return -(2 * i + 1); }, 141 [](const float64_t x, const float64_t y) { return x > y; }); 142 143 test_by_type<int32_t>([](int32_t i) { return 10 * i; }, [](int32_t i) { return i + 1; }, std::less<int32_t>()); 144 145 test_by_type<LocalWrapper<float32_t>>([](int32_t i) { return LocalWrapper<float32_t>(2 * i + 1); }, 146 [](int32_t i) { return LocalWrapper<float32_t>(2 * i); }, 147 std::less<LocalWrapper<float32_t>>()); 148 149 test_algo_basic_single<int32_t>(run_for_rnd_bi<test_non_const<int32_t>>()); 150 151 std::cout << done() << std::endl; 152 return 0; 153 } 154