along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <algorithm>
#include <cctype>
#include <iostream>
#include <sstream>
// Our case insensitive less() function as required by UCI protocol
-bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const {
-
- int c1, c2;
- size_t i = 0;
-
- while (i < s1.size() && i < s2.size())
- {
- c1 = tolower(s1[i]);
- c2 = tolower(s2[i++]);
+static bool ci_less(char c1, char c2) { return tolower(c1) < tolower(c2); }
- if (c1 != c2)
- return c1 < c2;
- }
- return s1.size() < s2.size();
+bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const {
+ return std::lexicographical_compare(s1.begin(), s1.end(), s2.begin(), s2.end(), ci_less);
}