ctype.h File Reference

#include <linux/compiler.h>

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Macros
#define	_U   0x01 /* upper */
#define	_L   0x02 /* lower */
#define	_D   0x04 /* digit */
#define	_C   0x08 /* cntrl */
#define	_P   0x10 /* punct */
#define	_S   0x20 /* white space (space/lf/tab) */
#define	_X   0x40 /* hex digit */
#define	_SP   0x80 /* hard space (0x20) */
#define	__ismask(x)   (_ctype[(int)(unsigned char)(x)])
#define	isalnum(c)   ((__ismask(c)&(_U|_L|_D)) != 0)
#define	isalpha(c)   ((__ismask(c)&(_U|_L)) != 0)
#define	iscntrl(c)   ((__ismask(c)&(_C)) != 0)
#define	isgraph(c)   ((__ismask(c)&(_P|_U|_L|_D)) != 0)
#define	islower(c)   ((__ismask(c)&(_L)) != 0)
#define	isprint(c)   ((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)
#define	ispunct(c)   ((__ismask(c)&(_P)) != 0)
#define	isspace(c)   ((__ismask(c)&(_S)) != 0)
#define	isupper(c)   ((__ismask(c)&(_U)) != 0)
#define	isxdigit(c)   ((__ismask(c)&(_D|_X)) != 0)
#define	isascii(c)   (((unsigned char)(c))<=0x7f)
#define	toascii(c)   (((unsigned char)(c))&0x7f)
#define	tolower(c)   __tolower(c)
#define	toupper(c)   __toupper(c)

Variables
const unsigned char	_ctype []

Macro Definition Documentation

__ismask

#define __ismask

(

x

)

(_ctype[(int)(unsigned char)(x)])

_C

#define _C   0x08 /* cntrl */

_D

#define _D   0x04 /* digit */

_L

#define _L   0x02 /* lower */

_P

#define _P   0x10 /* punct */

_S

#define _S   0x20 /* white space (space/lf/tab) */

_SP

#define _SP   0x80 /* hard space (0x20) */

_U

#define _U   0x01 /* upper */

_X

#define _X   0x40 /* hex digit */

isalnum

#define isalnum

(

c

)

((__ismask(c)&(_U|_L|_D)) != 0)

isalpha

#define isalpha

(

c

)

((__ismask(c)&(_U|_L)) != 0)

isascii

#define isascii

(

c

)

(((unsigned char)(c))<=0x7f)

iscntrl

#define iscntrl

(

c

)

((__ismask(c)&(_C)) != 0)

isgraph

#define isgraph

(

c

)

((__ismask(c)&(_P|_U|_L|_D)) != 0)

islower

#define islower

(

c

)

((__ismask(c)&(_L)) != 0)

isprint

#define isprint

(

c

)

((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)

ispunct

#define ispunct

(

c

)

((__ismask(c)&(_P)) != 0)

isspace

#define isspace

(

c

)

((__ismask(c)&(_S)) != 0)

isupper

#define isupper

(

c

)

((__ismask(c)&(_U)) != 0)

isxdigit

#define isxdigit

(

c

)

((__ismask(c)&(_D|_X)) != 0)

toascii

#define toascii

(

c

)

(((unsigned char)(c))&0x7f)

tolower

#define tolower

(

c

)

__tolower(c)

toupper

#define toupper

(

c

)

__toupper(c)

Variable Documentation

_ctype

const unsigned char _ctype[]

extern