#ifndef _CTYPE_H #define _CTYPE_H extern int isascii (int c) __attribute__ ((__const__)); extern int isblank (int c) __attribute__ ((__const__)); extern int isalnum (int c) __attribute__ ((__const__)); extern int isalpha (int c) __attribute__ ((__const__)); extern int isdigit (int c) __attribute__ ((__const__)); extern int isspace (int c) __attribute__ ((__const__)); extern int isupper (int c) __attribute__ ((__const__)); extern int islower (int c) __attribute__ ((__const__)); extern int toascii(int c) __attribute__ ((__const__)); extern int tolower(int c) __attribute__ ((__const__)); extern int toupper(int c) __attribute__ ((__const__)); extern int isprint(int c) __attribute__ ((__const__)); extern int ispunct(int c) __attribute__ ((__const__)); extern int iscntrl(int c) __attribute__ ((__const__)); /* fscking GNU extensions! */ extern int isxdigit(int c) __attribute__ ((__const__)); extern int isgraph(int c) __attribute__ ((__const__)); #endif