2009-04-23 Mike Burgess <wizardsguild@earthlink.net>

        * libc/string/strcasecmp.c: Optimized rewrite.
        * libc/string/strncasecmp.c: Fix description.
        * libc/string/strlwr.c: Avoid passing signed char to tolower.
        * libc/string/strupr.c: Avoid passing signed char to tolower.

1 files changed, 6 insertions, 10 deletions

diff --git a/newlib/libc/string/strlwr.c b/newlib/libc/string/strlwr.c
index 47096d430..3b73dba4b 100644
--- a/newlib/libc/string/strlwr.c
+++ b/newlib/libc/string/strlwr.c
@@ -34,17 +34,13 @@ QUICKREF
 #include <ctype.h>
 
 char *
-strlwr (a)
-     char *a;
+_DEFUN (strlwr, (s),
+	char *s)
 {
-  char *ret = a;
-
-  while (*a != '\0')
+  unsigned char *ucs = (unsigned char *) s;
+  for ( ; *ucs != '\0'; ucs++)
     {
-      if (isupper (*a))
-	*a = tolower (*a);
-      ++a;
+      *ucs = tolower(*ucs);
     }
-
-  return ret;
+  return s;
 }