1// -*- C++ -*-
2//===-- none_of.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#include "support/pstl_test_config.h"
13
14#include <execution>
15#include <algorithm>
16
17#include "support/utils.h"
18
19/*
20 TODO: consider implementing the following tests for a better code coverage
21 - correctness
22 - bad input argument (if applicable)
23 - data corruption around/of input and output
24 - correctly work with nested parallelism
25 - check that algorithm does not require anything more than is described in its requirements section
26*/
27
28using namespace TestUtils;
29
30struct test_none_of
31{
32 template <typename ExecutionPolicy, typename Iterator, typename Predicate>
33 void
34 operator()(ExecutionPolicy&& exec, Iterator begin, Iterator end, Predicate pred, bool expected)
35 {
36
37 auto actualr = std::none_of(exec, begin, end, pred);
38 EXPECT_EQ(expected, actualr, "result for none_of");
39 }
40};
41
42template <typename T>
43void
44test(size_t bits)
45{
46 for (size_t n = 0; n <= 100000; n = n <= 16 ? n + 1 : size_t(3.1415 * n))
47 {
48
49 // Sequence of odd values
50 Sequence<T> in(n, [n, bits](size_t) { return T(2 * HashBits(i: n, bits: bits - 1) ^ 1); });
51
52 // Even value, or false when T is bool.
53 T spike(2 * HashBits(i: n, bits: bits - 1));
54
55 invoke_on_all_policies(test_none_of(), in.begin(), in.end(), is_equal_to<T>(spike), true);
56 invoke_on_all_policies(test_none_of(), in.cbegin(), in.cend(), is_equal_to<T>(spike), true);
57 if (n > 0)
58 {
59 // Sprinkle in a hit
60 in[2 * n / 3] = spike;
61 invoke_on_all_policies(test_none_of(), in.begin(), in.end(), is_equal_to<T>(spike), false);
62 invoke_on_all_policies(test_none_of(), in.cbegin(), in.cend(), is_equal_to<T>(spike), false);
63
64 // Sprinkle in a few more hits
65 in[n / 3] = spike;
66 in[n / 2] = spike;
67 invoke_on_all_policies(test_none_of(), in.begin(), in.end(), is_equal_to<T>(spike), false);
68 invoke_on_all_policies(test_none_of(), in.cbegin(), in.cend(), is_equal_to<T>(spike), false);
69 }
70 }
71}
72
73struct test_non_const
74{
75 template <typename Policy, typename Iterator>
76 void
77 operator()(Policy&& exec, Iterator iter)
78 {
79 auto is_even = [&](float64_t v) {
80 uint32_t i = (uint32_t)v;
81 return i % 2 == 0;
82 };
83 none_of(exec, iter, iter, non_const(is_even));
84 }
85};
86
87int
88main()
89{
90 test<int32_t>(bits: 8 * sizeof(int32_t));
91 test<uint16_t>(bits: 8 * sizeof(uint16_t));
92 test<float64_t>(bits: 53);
93#if !defined(_PSTL_ICC_16_17_TEST_REDUCTION_BOOL_TYPE_RELEASE_64_BROKEN)
94 test<bool>(bits: 1);
95#endif
96
97 test_algo_basic_single<int32_t>(f: run_for_rnd_fw<test_non_const>());
98
99 std::cout << done() << std::endl;
100 return 0;
101}
102

source code of pstl/test/std/algorithms/alg.nonmodifying/none_of.pass.cpp