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 int compare(const char_type* s1, const char_type* s2, size_t n); 15 16 #include <string> 17 #include <cassert> 18 19 int main() 20 { 21 assert(std::char_traits<char>::compare("", "", 0) == 0); 22 assert(std::char_traits<char>::compare(NULL, NULL, 0) == 0); 23 24 assert(std::char_traits<char>::compare("1", "1", 1) == 0); 25 assert(std::char_traits<char>::compare("1", "2", 1) < 0); 26 assert(std::char_traits<char>::compare("2", "1", 1) > 0); 27 28 assert(std::char_traits<char>::compare("12", "12", 2) == 0); 29 assert(std::char_traits<char>::compare("12", "13", 2) < 0); 30 assert(std::char_traits<char>::compare("12", "22", 2) < 0); 31 assert(std::char_traits<char>::compare("13", "12", 2) > 0); 32 assert(std::char_traits<char>::compare("22", "12", 2) > 0); 33 34 assert(std::char_traits<char>::compare("123", "123", 3) == 0); 35 assert(std::char_traits<char>::compare("123", "223", 3) < 0); 36 assert(std::char_traits<char>::compare("123", "133", 3) < 0); 37 assert(std::char_traits<char>::compare("123", "124", 3) < 0); 38 assert(std::char_traits<char>::compare("223", "123", 3) > 0); 39 assert(std::char_traits<char>::compare("133", "123", 3) > 0); 40 assert(std::char_traits<char>::compare("124", "123", 3) > 0); 41 } 42
