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> bool islower (charT c, const locale& loc);
13 
14 #include <locale>
15 #include <cassert>
16 
17 int main()
18 {
19     std::locale l;
20     assert(!std::islower(' ', l));
21     assert(!std::islower('<', l));
22     assert(!std::islower('\x8', l));
23     assert(!std::islower('A', l));
24     assert( std::islower('a', l));
25     assert( std::islower('z', l));
26     assert(!std::islower('3', l));
27     assert(!std::islower('.', l));
28     assert( std::islower('f', l));
29     assert(!std::islower('9', l));
30     assert(!std::islower('+', l));
31 }
32