1 files changed, 19 insertions, 15 deletions
diff --git a/mdk-stage1/dietlibc/lib/strncasecmp.c b/mdk-stage1/dietlibc/lib/strncasecmp.c
index 8a5445e53..543fe56ba 100644
--- a/mdk-stage1/dietlibc/lib/strncasecmp.c
+++ b/mdk-stage1/dietlibc/lib/strncasecmp.c
@@ -1,18 +1,22 @@
-#include <ctype.h>
 #include <sys/types.h>
-#include <string.h>
+#include <strings.h>
 
-int strncasecmp(const char *s, const char *t, size_t n) {
-  register char x;
-  register const char* u=s+n;
-  for (;;) {
-    x = tolower(*s); if (x!=tolower(*t)) break; if (!x) break; if (++s>=u) return 0; ++t;
-#ifndef WANT_SMALL_STRING_ROUTINES
-    x = tolower(*s); if (x!=tolower(*t)) break; if (!x) break; if (++s>=u) return 0; ++t;
-    x = tolower(*s); if (x!=tolower(*t)) break; if (!x) break; if (++s>=u) return 0; ++t;
-    x = tolower(*s); if (x!=tolower(*t)) break; if (!x) break; if (++s>=u) return 0; ++t;
-#endif
-  }
-  return ((int)(unsigned int)(unsigned char) x)
-       - ((int)(unsigned int)(unsigned char) *t);
+int  strncasecmp ( const char* s1, const char* s2, size_t len )
+{
+    register unsigned int  x2;
+    register unsigned int  x1;
+    register const char*   end = s1 + len;
+
+    while (1) {
+        if ( s1 >= end )
+            return 0;
+        x2 = *s2++ - 'A'; if (x2 < 26u) x2 += 32;
+        x1 = *s1++ - 'A'; if (x1 < 26u) x1 += 32;
+        if ( x2 != x1 )
+            break;
+        if ( x1 == (unsigned int)-'A' )
+            break;
+    }
+
+    return x1 - x2;
 }