1 // -*- C++ -*- 2 //===-- transform_binary.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 15 #include "support/utils.h" 16 17 using namespace TestUtils; 18 19 template <typename In1, typename In2, typename Out> 20 class TheOperation 21 { 22 Out val; 23 24 public: 25 TheOperation(Out v) : val(v) {} 26 Out 27 operator()(const In1& x, const In2& y) const 28 { 29 return Out(val + x - y); 30 } 31 }; 32 33 template <typename InputIterator1, typename InputIterator2, typename OutputIterator> 34 void 35 check_and_reset(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, OutputIterator out_first) 36 { 37 typedef typename std::iterator_traits<OutputIterator>::value_type Out; 38 typename std::iterator_traits<OutputIterator>::difference_type k = 0; 39 for (; first1 != last1; ++first1, ++first2, ++out_first, ++k) 40 { 41 // check 42 Out expected = Out(1.5) + *first1 - *first2; 43 Out actual = *out_first; 44 if (std::is_floating_point<Out>::value) 45 { 46 EXPECT_TRUE((expected > actual ? expected - actual : actual - expected) < 1e7, 47 "wrong value in output sequence"); 48 } 49 else 50 { 51 EXPECT_EQ(expected, actual, "wrong value in output sequence"); 52 } 53 // reset 54 *out_first = k % 7 != 4 ? 7 * k - 5 : 0; 55 } 56 } 57 58 struct test_one_policy 59 { 60 template <typename Policy, typename InputIterator1, typename InputIterator2, typename OutputIterator, 61 typename BinaryOp> 62 void 63 operator()(Policy&& exec, InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2, 64 OutputIterator out_first, OutputIterator out_last, BinaryOp op) 65 { 66 auto orrr = std::transform(exec, first1, last1, first2, out_first, op); 67 check_and_reset(first1, last1, first2, out_first); 68 } 69 }; 70 71 template <typename In1, typename In2, typename Out, typename Predicate> 72 void 73 test(Predicate pred) 74 { 75 for (size_t n = 0; n <= 100000; n = n <= 16 ? n + 1 : size_t(3.1415 * n)) 76 { 77 Sequence<In1> in1(n, [](size_t k) { return k % 5 != 1 ? 3 * k - 7 : 0; }); 78 Sequence<In2> in2(n, [](size_t k) { return k % 7 != 2 ? 5 * k - 5 : 0; }); 79 80 Sequence<Out> out(n, [](size_t k) { return -1; }); 81 82 invoke_on_all_policies(test_one_policy(), in1.begin(), in1.end(), in2.begin(), in2.end(), out.begin(), 83 out.end(), pred); 84 invoke_on_all_policies(test_one_policy(), in1.cbegin(), in1.cend(), in2.cbegin(), in2.cend(), out.begin(), 85 out.end(), pred); 86 } 87 } 88 89 template <typename T> 90 struct test_non_const 91 { 92 template <typename Policy, typename InputIterator, typename OutputInterator> 93 void 94 operator()(Policy&& exec, InputIterator input_iter, OutputInterator out_iter) 95 { 96 invoke_if(exec, [&]() { 97 InputIterator input_iter2 = input_iter; 98 transform(exec, input_iter, input_iter, input_iter2, out_iter, non_const(std::plus<T>())); 99 }); 100 } 101 }; 102 103 int32_t 104 main() 105 { 106 //const operator() 107 test<int32_t, int32_t, int32_t>(TheOperation<int32_t, int32_t, int32_t>(1)); 108 test<float32_t, float32_t, float32_t>(TheOperation<float32_t, float32_t, float32_t>(1.5)); 109 //non-const operator() 110 test<int32_t, float32_t, float32_t>(non_const(TheOperation<int32_t, float32_t, float32_t>(1.5))); 111 test<int64_t, float64_t, float32_t>(non_const(TheOperation<int64_t, float64_t, float32_t>(1.5))); 112 //lambda 113 test<int8_t, float64_t, int8_t>([](const int8_t& x, const float64_t& y) { return int8_t(int8_t(1.5) + x - y); }); 114 115 test_algo_basic_double<int32_t>(run_for_rnd_fw<test_non_const<int32_t>>()); 116 117 std::cout << done() << std::endl; 118 return 0; 119 } 120