X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fucioption.cpp;h=9e718c02c89ca8a5670b555ed05ccca93fb9026a;hp=1dfc474a9c0a3098ce82e0aa181dfb1bfa89195a;hb=44c78fdb7ad4c82656f25e4da11f3f9d56a4c6aa;hpb=ff1ecb5d6c58b665efc9df6779c05b9e7a61d603

diff --git a/src/ucioption.cpp b/src/ucioption.cpp
index 1dfc474a..9e718c02 100644
--- a/src/ucioption.cpp
+++ b/src/ucioption.cpp
@@ -17,6 +17,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <algorithm>
 #include <cctype>
 #include <iostream>
 #include <sstream>
@@ -33,20 +34,10 @@ OptionsMap Options; // Global object
 
 
 // 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);
 }