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
|
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
// <string>
// template<> struct char_traits<char8_t>
// static constexpr int compare(const char_type* s1, const char_type* s2, size_t n);
#include <string>
#include <cassert>
#include "test_macros.h"
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
constexpr bool test_constexpr()
{
return std::char_traits<char8_t>::compare(u8"123", u8"223", 3) < 0
&& std::char_traits<char8_t>::compare(u8"223", u8"123", 3) > 0
&& std::char_traits<char8_t>::compare(u8"123", u8"123", 3) == 0;
}
int main(int, char**)
{
assert(std::char_traits<char8_t>::compare(u8"", u8"", 0) == 0);
assert(std::char_traits<char8_t>::compare(NULL, NULL, 0) == 0);
assert(std::char_traits<char8_t>::compare(u8"1", u8"1", 1) == 0);
assert(std::char_traits<char8_t>::compare(u8"1", u8"2", 1) < 0);
assert(std::char_traits<char8_t>::compare(u8"2", u8"1", 1) > 0);
assert(std::char_traits<char8_t>::compare(u8"12", u8"12", 2) == 0);
assert(std::char_traits<char8_t>::compare(u8"12", u8"13", 2) < 0);
assert(std::char_traits<char8_t>::compare(u8"12", u8"22", 2) < 0);
assert(std::char_traits<char8_t>::compare(u8"13", u8"12", 2) > 0);
assert(std::char_traits<char8_t>::compare(u8"22", u8"12", 2) > 0);
assert(std::char_traits<char8_t>::compare(u8"123", u8"123", 3) == 0);
assert(std::char_traits<char8_t>::compare(u8"123", u8"223", 3) < 0);
assert(std::char_traits<char8_t>::compare(u8"123", u8"133", 3) < 0);
assert(std::char_traits<char8_t>::compare(u8"123", u8"124", 3) < 0);
assert(std::char_traits<char8_t>::compare(u8"223", u8"123", 3) > 0);
assert(std::char_traits<char8_t>::compare(u8"133", u8"123", 3) > 0);
assert(std::char_traits<char8_t>::compare(u8"124", u8"123", 3) > 0);
static_assert(test_constexpr(), "" );
return 0;
}
#else
int main(int, char**) {
return 0;
}
#endif
|
