1 // -*- C++ -*-
2 //===-- replace_copy.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++03, c++11, c++14
11
12 // Tests for replace_copy and replace_copy_if
13
14 #include "support/pstl_test_config.h"
15
16 #include <execution>
17 #include <algorithm>
18
19 #include "support/utils.h"
20
21 using namespace TestUtils;
22
23 struct test_replace_copy
24 {
25 template <typename Policy, typename InputIterator, typename OutputIterator, typename OutputIterator2, typename Size,
26 typename Predicate, typename T>
27 void
operator ()test_replace_copy28 operator()(Policy&& exec, InputIterator first, InputIterator last, OutputIterator out_first,
29 OutputIterator out_last, OutputIterator2 expected_first, OutputIterator2, Size n, Predicate pred,
30 const T& old_value, const T& new_value, T trash)
31 {
32 // Cleaning
33 std::fill_n(expected_first, n, trash);
34 std::fill_n(out_first, n, trash);
35 // Run replace_copy
36 auto i = std::replace_copy(first, last, expected_first, old_value, new_value);
37 auto k = std::replace_copy(exec, first, last, out_first, old_value, new_value);
38 EXPECT_EQ_N(expected_first, out_first, n, "wrong replace_copy effect");
39 EXPECT_TRUE(out_last == k, "wrong return value from replace_copy");
40
41 // Cleaning
42 std::fill_n(expected_first, n, trash);
43 std::fill_n(out_first, n, trash);
44 // Run replace_copy_if
45 i = replace_copy_if(first, last, expected_first, pred, new_value);
46 k = replace_copy_if(exec, first, last, out_first, pred, new_value);
47 EXPECT_EQ_N(expected_first, out_first, n, "wrong replace_copy_if effect");
48 EXPECT_TRUE(out_last == k, "wrong return value from replace_copy_if");
49 }
50 };
51
52 template <typename T, typename Convert, typename Predicate>
53 void
test(T trash,const T & old_value,const T & new_value,Predicate pred,Convert convert)54 test(T trash, const T& old_value, const T& new_value, Predicate pred, Convert convert)
55 {
56 // Try sequences of various lengths.
57 for (size_t n = 0; n <= 100000; n = n <= 16 ? n + 1 : size_t(3.1415 * n))
58 {
59 Sequence<T> in(n, [&](size_t k) -> T { return convert(n ^ k); });
60 Sequence<T> out(n, [=](size_t) { return trash; });
61 Sequence<T> expected(n, [=](size_t) { return trash; });
62
63 invoke_on_all_policies(test_replace_copy(), in.begin(), in.end(), out.begin(), out.end(), expected.begin(),
64 expected.end(), out.size(), pred, old_value, new_value, trash);
65 invoke_on_all_policies(test_replace_copy(), in.cbegin(), in.cend(), out.begin(), out.end(), expected.begin(),
66 expected.end(), out.size(), pred, old_value, new_value, trash);
67 }
68 }
69
70 template <typename T>
71 struct test_non_const
72 {
73 template <typename Policy, typename InputIterator, typename OutputInterator>
74 void
operator ()test_non_const75 operator()(Policy&& exec, InputIterator input_iter, OutputInterator out_iter)
76 {
77 auto is_even = [&](float64_t v) {
78 uint32_t i = (uint32_t)v;
79 return i % 2 == 0;
80 };
81
82 invoke_if(exec, [&]() { replace_copy_if(exec, input_iter, input_iter, out_iter, non_const(is_even), T(0)); });
83 }
84 };
85
86 int
main()87 main()
88 {
89
90 test<float64_t>(-666.0, 8.5, 0.33, [](const float64_t& x) { return x * x <= 1024; },
91 [](size_t j) { return ((j + 1) % 7 & 2) != 0 ? 8.5 : float64_t(j % 32 + j); });
92
93 test<int32_t>(-666, 42, 99, [](const int32_t& x) { return x != 42; },
94 [](size_t j) { return ((j + 1) % 5 & 2) != 0 ? 42 : -1 - int32_t(j); });
95
96 #if !defined(_PSTL_ICC_17_TEST_MAC_RELEASE_32_BROKEN)
97 test<Number>(Number(42, OddTag()), Number(2001, OddTag()), Number(2017, OddTag()), IsMultiple(3, OddTag()),
98 [](int32_t j) { return ((j + 1) % 3 & 2) != 0 ? Number(2001, OddTag()) : Number(j, OddTag()); });
99 #endif
100
101 test_algo_basic_double<int32_t>(run_for_rnd_fw<test_non_const<int32_t>>());
102
103 std::cout << done() << std::endl;
104 return 0;
105 }
106