__ismask 22 include/linux/ctype.h #define isalnum(c) ((__ismask(c)&(_U|_L|_D)) != 0) __ismask 23 include/linux/ctype.h #define isalpha(c) ((__ismask(c)&(_U|_L)) != 0) __ismask 24 include/linux/ctype.h #define iscntrl(c) ((__ismask(c)&(_C)) != 0) __ismask 25 include/linux/ctype.h #define isdigit(c) ((__ismask(c)&(_D)) != 0) __ismask 26 include/linux/ctype.h #define isgraph(c) ((__ismask(c)&(_P|_U|_L|_D)) != 0) __ismask 27 include/linux/ctype.h #define islower(c) ((__ismask(c)&(_L)) != 0) __ismask 28 include/linux/ctype.h #define isprint(c) ((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0) __ismask 29 include/linux/ctype.h #define ispunct(c) ((__ismask(c)&(_P)) != 0) __ismask 30 include/linux/ctype.h #define isspace(c) ((__ismask(c)&(_S)) != 0) __ismask 31 include/linux/ctype.h #define isupper(c) ((__ismask(c)&(_U)) != 0) __ismask 32 include/linux/ctype.h #define isxdigit(c) ((__ismask(c)&(_D|_X)) != 0)