1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <algorithm>
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: libcpp-has-no-incomplete-pstl
// template<class ExecutionPolicy, class ForwardIterator, class Size, class T>
// ForwardIterator fill_n(ExecutionPolicy&& exec,
// ForwardIterator first, Size n, const T& value);
#include <algorithm>
#include <cassert>
#include <vector>
#include "test_macros.h"
#include "test_execution_policies.h"
#include "test_iterators.h"
EXECUTION_POLICY_SFINAE_TEST(fill_n);
static_assert(sfinae_test_fill_n<int, int*, int*, bool (*)(int)>);
static_assert(!sfinae_test_fill_n<std::execution::parallel_policy, int*, int*, int>);
template <class Iter>
struct Test {
template <class Policy>
void operator()(Policy&& policy) {
{ // simple test
int a[4];
std::fill_n(policy, Iter(std::begin(a)), std::size(a), 33);
assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; }));
}
{ // check that an empty range works
int a[1] = {2};
std::fill_n(policy, Iter(std::begin(a)), 0, 33);
assert(a[0] == 2);
}
{ // check that a one-element range works
int a[1];
std::fill_n(policy, Iter(std::begin(a)), std::size(a), 33);
assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; }));
}
{ // check that a two-element range works
int a[2];
std::fill_n(policy, Iter(std::begin(a)), std::size(a), 33);
assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; }));
}
{ // check that a large range works
std::vector<int> a(234, 2);
std::fill_n(policy, Iter(std::data(a)), std::size(a), 33);
assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; }));
}
}
};
int main(int, char**) {
types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{});
return 0;
}
|
