1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14
10
11// UNSUPPORTED: libcpp-has-no-incomplete-pstl
12
13// <algorithm>
14
15// template<class ExecutionPolicy, class ForwardIterator, class Predicate>
16// bool none_of(ExecutionPolicy&& exec, ForwardIterator first, ForwardIterator last,
17// Predicate pred);
18
19#include <algorithm>
20#include <cassert>
21#include <vector>
22
23#include "test_macros.h"
24#include "test_execution_policies.h"
25#include "test_iterators.h"
26
27EXECUTION_POLICY_SFINAE_TEST(none_of);
28
29static_assert(sfinae_test_none_of<int, int*, int*, bool (*)(int)>);
30static_assert(!sfinae_test_none_of<std::execution::parallel_policy, int*, int*, bool (*)(int)>);
31
32template <class Iter>
33struct Test {
34 template <class Policy>
35 void operator()(Policy&& policy) {
36 int a[] = {1, 2, 3, 4, 5, 6, 7, 8};
37 // simple test
38 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i > 9; }));
39 assert(!std::none_of(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i >= 8; }));
40
41 // check that an empty range works
42 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::begin(a)), [](int) { return false; }));
43
44 // check that true is returned if no element satisfies the condition
45 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i == 9; }));
46
47 // check that false is returned if only one elements satisfies the condition
48 assert(!std::none_of(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i == 1; }));
49
50 // check that a one-element range works
51 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::begin(a) + 1), [](int i) { return i != 1; }));
52
53 // check that a two-element range works
54 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::begin(a) + 2), [](int i) { return i > 2; }));
55
56 // check that a large number of elements works
57 std::vector<int> vec(100);
58 std::fill(vec.begin(), vec.end(), 3);
59 assert(std::none_of(policy, Iter(vec.data()), Iter(vec.data() + vec.size()), [](int i) { return i != 3; }));
60 }
61};
62
63int main(int, char**) {
64 types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{});
65
66 return 0;
67}
68

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