#include <locale/localeinfo.h>
--
LOCALE_CTYPE_TOLOWER offsetof (struct __locale_struct, __ctype_tolower)
LOCALE_CTYPE_TOUPPER offsetof (struct __locale_struct, __ctype_toupper)
_NL_CTYPE_NONASCII_CASE
LOCALE_DATA_VALUES offsetof (struct __locale_data, values)
SIZEOF_VALUES sizeof (((struct __locale_data *) 0)->values[0])