1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <string>
11
12// template<> struct char_traits<char>
13
14// static constexpr bool lt(char_type c1, char_type c2);
15
16#include <string>
17#include <cassert>
18
19int main()
20{
21    char c = '\0';
22    assert(!std::char_traits<char>::lt('a', 'a'));
23    assert( std::char_traits<char>::lt('A', 'a'));
24    assert(!std::char_traits<char>::lt('A' + 127, 'a'));
25    assert(!std::char_traits<char>::lt('A' - 127, 'a'));
26    assert( std::char_traits<char>::lt('A', 'a' + 127));
27    assert( std::char_traits<char>::lt('A', 'a' - 127));
28}
29