-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <sys/types.h>
-#include <ctype.h>
-
-#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-#define ISASCII(c) 1
-#else
-#define ISASCII(c) isascii(c)
-#endif
-#define ISUPPER(c) (ISASCII (c) && isupper (c))
-
-#if _LIBC || STDC_HEADERS
-# define TOLOWER(c) tolower (c)
-#else
-# define TOLOWER(c) (ISUPPER (c) ? tolower (c) : (c))
-#endif