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 // <string>
10
11 // template<> struct char_traits<wchar_t>
12
13 // static constexpr bool lt(char_type c1, char_type c2);
14
15 // UNSUPPORTED: no-wide-characters
16
17 #include <string>
18 #include <cassert>
19
20 #include "test_macros.h"
21
main(int,char **)22 int main(int, char**) {
23 assert(std::char_traits<wchar_t>::lt(L'\0', L'A') == (L'\0' < L'A'));
24 assert(std::char_traits<wchar_t>::lt(L'A', L'\0') == (L'A' < L'\0'));
25
26 assert(std::char_traits<wchar_t>::lt(L'a', L'a') == (L'a' < L'a'));
27 assert(std::char_traits<wchar_t>::lt(L'A', L'a') == (L'A' < L'a'));
28 assert(std::char_traits<wchar_t>::lt(L'a', L'A') == (L'a' < L'A'));
29
30 assert(std::char_traits<wchar_t>::lt(L'a', L'z') == (L'a' < L'z'));
31 assert(std::char_traits<wchar_t>::lt(L'A', L'Z') == (L'A' < L'Z'));
32
33 assert(std::char_traits<wchar_t>::lt(L' ', L'A') == (L' ' < L'A'));
34 assert(std::char_traits<wchar_t>::lt(L'A', L'~') == (L'A' < L'~'));
35
36 return 0;
37 }
38