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 Function>
16// void for_each(ExecutionPolicy&& exec,
17// ForwardIterator first, ForwardIterator last,
18// Function f);
19
20#include <algorithm>
21#include <atomic>
22#include <cassert>
23#include <vector>
24
25#include "test_macros.h"
26#include "test_execution_policies.h"
27#include "test_iterators.h"
28
29EXECUTION_POLICY_SFINAE_TEST(for_each);
30
31static_assert(sfinae_test_for_each<int, int*, int*, bool (*)(int)>);
32static_assert(!sfinae_test_for_each<std::execution::parallel_policy, int*, int*, bool (*)(int)>);
33
34template <class Iter>
35struct Test {
36 template <class Policy>
37 void operator()(Policy&& policy) {
38 int sizes[] = {0, 1, 2, 100};
39 for (auto size : sizes) {
40 std::vector<int> a(size);
41 std::vector<Bool> called(size);
42 std::for_each(policy, Iter(std::data(cont&: a)), Iter(std::data(cont&: a) + std::size(cont: a)), [&](int& v) {
43 assert(!called[&v - a.data()]);
44 called[&v - a.data()] = true;
45 });
46 assert(std::all_of(std::begin(called), std::end(called), [](bool b) { return b; }));
47 }
48 }
49};
50
51int main(int, char**) {
52 types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{});
53
54 return 0;
55}
56

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