/* /usr/include/ctype.h */ void* __ctype_b_loc(void); void* __ctype_tolower_loc(void); void* __ctype_toupper_loc (void); int isctype(int c, int mask); int isascii(int c); int toascii(int c); int tolower(int c); int toupper(int c); int __tolower_l(int c, __locale_t l); int tolower_l(int c, __locale_t l); int __toupper_l(int c, __locale_t l); int toupper_l(int c, __locale_t l);