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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
// -*- C++ -*-
//===-- remove_copy.pass.cpp ----------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "support/pstl_test_config.h"
#include <execution>
#include <algorithm>
#include "support/utils.h"
using namespace TestUtils;
struct run_remove_copy
{
template <typename Policy, typename InputIterator, typename OutputIterator, typename OutputIterator2, typename Size,
typename T>
void
operator()(Policy&& exec, InputIterator first, InputIterator last, OutputIterator out_first,
OutputIterator out_last, OutputIterator2 expected_first, OutputIterator2 expected_last, Size n,
const T& value, T trash)
{
// Cleaning
std::fill_n(expected_first, n, trash);
std::fill_n(out_first, n, trash);
// Run copy_if
auto i = remove_copy(first, last, expected_first, value);
auto k = remove_copy(exec, first, last, out_first, value);
EXPECT_EQ_N(expected_first, out_first, n, "wrong remove_copy effect");
for (size_t j = 0; j < GuardSize; ++j)
{
++k;
}
EXPECT_TRUE(out_last == k, "wrong return value from remove_copy");
}
};
template <typename T, typename Convert>
void
test(T trash, const T& value, Convert convert, bool check_weakness = true)
{
// Try sequences of various lengths.
for (size_t n = 0; n <= 100000; n = n <= 16 ? n + 1 : size_t(3.1415 * n))
{
// count is number of output elements, plus a handful
// more for sake of detecting buffer overruns.
size_t count = GuardSize;
Sequence<T> in(n, [&](size_t k) -> T {
T x = convert(n ^ k);
count += !(x == value) ? 1 : 0;
return x;
});
using namespace std;
Sequence<T> out(count, [=](size_t) { return trash; });
Sequence<T> expected(count, [=](size_t) { return trash; });
if (check_weakness)
{
auto expected_result = remove_copy(in.cfbegin(), in.cfend(), expected.begin(), value);
size_t m = expected_result - expected.begin();
EXPECT_TRUE(n / 4 <= m && m <= 3 * (n + 1) / 4, "weak test for remove_copy");
}
invoke_on_all_policies(run_remove_copy(), in.begin(), in.end(), out.begin(), out.end(), expected.begin(),
expected.end(), count, value, trash);
invoke_on_all_policies(run_remove_copy(), in.cbegin(), in.cend(), out.begin(), out.end(), expected.begin(),
expected.end(), count, value, trash);
}
}
int32_t
main()
{
test<float64_t>(-666.0, 8.5, [](size_t j) { return ((j + 1) % 7 & 2) != 0 ? 8.5 : float64_t(j % 32 + j); });
test<int32_t>(-666, 42, [](size_t j) { return ((j + 1) % 5 & 2) != 0 ? 42 : -1 - int32_t(j); });
test<Number>(Number(42, OddTag()), Number(2001, OddTag()),
[](int32_t j) { return ((j + 1) % 3 & 2) != 0 ? Number(2001, OddTag()) : Number(j, OddTag()); });
std::cout << done() << std::endl;
return 0;
}
|
