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// <locale>
11
12// template <class charT> class collate;
13
14// int compare(const charT* low1, const charT* high1,
15//             const charT* low2, const charT* high2) const;
16
17#include <locale>
18#include <cassert>
19
20int main()
21{
22    std::locale l = std::locale::classic();
23    {
24        const char ia[] = "1234";
25        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
26        const char ib[] = "123";
27        const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
28        assert(f.compare(ia, ia+sa, ib, ib+2) == 1);
29        assert(f.compare(ib, ib+2, ia, ia+sa) == -1);
30        assert(f.compare(ia, ia+sa, ib, ib+3) == 1);
31        assert(f.compare(ib, ib+3, ia, ia+sa) == -1);
32        assert(f.compare(ia, ia+sa, ib+1, ib+3) == -1);
33        assert(f.compare(ib+1, ib+3, ia, ia+sa) == 1);
34        assert(f.compare(ia, ia+3, ib, ib+3) == 0);
35    }
36    {
37        const wchar_t ia[] = L"1234";
38        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
39        const wchar_t ib[] = L"123";
40        const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
41        assert(f.compare(ia, ia+sa, ib, ib+2) == 1);
42        assert(f.compare(ib, ib+2, ia, ia+sa) == -1);
43        assert(f.compare(ia, ia+sa, ib, ib+3) == 1);
44        assert(f.compare(ib, ib+3, ia, ia+sa) == -1);
45        assert(f.compare(ia, ia+sa, ib+1, ib+3) == -1);
46        assert(f.compare(ib+1, ib+3, ia, ia+sa) == 1);
47        assert(f.compare(ia, ia+3, ib, ib+3) == 0);
48    }
49}
50