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// <algorithm>
10
11// UNSUPPORTED: c++03, c++11, c++14
12
13// UNSUPPORTED: libcpp-has-no-incomplete-pstl
14
15// template<class ExecutionPolicy, class ForwardIterator, class T>
16// void fill(ExecutionPolicy&& exec,
17// ForwardIterator first, ForwardIterator last, const T& value);
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#include "type_algorithms.h"
27
28EXECUTION_POLICY_SFINAE_TEST(fill);
29
30static_assert(sfinae_test_fill<int, int*, int*, bool (*)(int)>);
31static_assert(!sfinae_test_fill<std::execution::parallel_policy, int*, int*, int>);
32
33template <class Iter>
34struct Test {
35 template <class Policy>
36 void operator()(Policy&& policy) {
37 { // simple test
38 int a[4];
39 std::fill(policy, Iter(std::begin(arr&: a)), Iter(std::end(arr&: a)), 33);
40 assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; }));
41 }
42 { // check that an empty range works
43 int a[1] = {2};
44 std::fill(policy, Iter(std::begin(arr&: a)), Iter(std::begin(arr&: a)), 33);
45 assert(a[0] == 2);
46 }
47 { // check that a one-element range works
48 int a[1];
49 std::fill(policy, Iter(std::begin(arr&: a)), Iter(std::end(arr&: a)), 33);
50 assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; }));
51 }
52 { // check that a two-element range works
53 int a[2];
54 std::fill(policy, Iter(std::begin(arr&: a)), Iter(std::end(arr&: a)), 33);
55 assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; }));
56 }
57 { // check that a large range works
58 std::vector<int> a(234, 2);
59 std::fill(policy, Iter(std::data(cont&: a)), Iter(std::data(cont&: a) + std::size(cont: a)), 33);
60 assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; }));
61 }
62 }
63};
64
65int main(int, char**) {
66 types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{});
67
68 return 0;
69}
70

source code of libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/pstl.fill.pass.cpp