1#ifndef _LINUX_CTYPE_H
 2#define _LINUX_CTYPE_H
 3
 
 
 4/*
 5 * NOTE! This ctype does not handle EOF like the standard C
 6 * library is required to.
 7 */
 8
 9#define _U	0x01	/* upper */
10#define _L	0x02	/* lower */
11#define _D	0x04	/* digit */
12#define _C	0x08	/* cntrl */
13#define _P	0x10	/* punct */
14#define _S	0x20	/* white space (space/lf/tab) */
15#define _X	0x40	/* hex digit */
16#define _SP	0x80	/* hard space (0x20) */
17
18extern const unsigned char _ctype[];
19
20#define __ismask(x) (_ctype[(int)(unsigned char)(x)])
21
22#define isalnum(c)	((__ismask(c)&(_U|_L|_D)) != 0)
23#define isalpha(c)	((__ismask(c)&(_U|_L)) != 0)
24#define iscntrl(c)	((__ismask(c)&(_C)) != 0)
25static inline int isdigit(int c)
26{
27	return '0' <= c && c <= '9';
28}
29#define isgraph(c)	((__ismask(c)&(_P|_U|_L|_D)) != 0)
30#define islower(c)	((__ismask(c)&(_L)) != 0)
31#define isprint(c)	((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)
32#define ispunct(c)	((__ismask(c)&(_P)) != 0)
33/* Note: isspace() must return false for %NUL-terminator */
34#define isspace(c)	((__ismask(c)&(_S)) != 0)
35#define isupper(c)	((__ismask(c)&(_U)) != 0)
36#define isxdigit(c)	((__ismask(c)&(_D|_X)) != 0)
37
38#define isascii(c) (((unsigned char)(c))<=0x7f)
39#define toascii(c) (((unsigned char)(c))&0x7f)
 
 
 
 
 
 
 
 
 
40
41static inline unsigned char __tolower(unsigned char c)
42{
43	if (isupper(c))
44		c -= 'A'-'a';
45	return c;
46}
47
48static inline unsigned char __toupper(unsigned char c)
49{
50	if (islower(c))
51		c -= 'a'-'A';
52	return c;
53}
54
55#define tolower(c) __tolower(c)
56#define toupper(c) __toupper(c)
57
58/*
59 * Fast implementation of tolower() for internal usage. Do not use in your
60 * code.
61 */
62static inline char _tolower(const char c)
63{
64	return c | 0x20;
65}
66
67/* Fast check for octal digit */
68static inline int isodigit(const char c)
69{
70	return c >= '0' && c <= '7';
71}
72
73#endif

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LINUX_CTYPE_H
 3#define _LINUX_CTYPE_H
 4
 5#include <linux/compiler.h>
 6
 7/*
 8 * NOTE! This ctype does not handle EOF like the standard C
 9 * library is required to.
10 */
11
12#define _U	0x01	/* upper */
13#define _L	0x02	/* lower */
14#define _D	0x04	/* digit */
15#define _C	0x08	/* cntrl */
16#define _P	0x10	/* punct */
17#define _S	0x20	/* white space (space/lf/tab) */
18#define _X	0x40	/* hex digit */
19#define _SP	0x80	/* hard space (0x20) */
20
21extern const unsigned char _ctype[];
22
23#define __ismask(x) (_ctype[(int)(unsigned char)(x)])
24
25#define isalnum(c)	((__ismask(c)&(_U|_L|_D)) != 0)
26#define isalpha(c)	((__ismask(c)&(_U|_L)) != 0)
27#define iscntrl(c)	((__ismask(c)&(_C)) != 0)
 
 
 
 
28#define isgraph(c)	((__ismask(c)&(_P|_U|_L|_D)) != 0)
29#define islower(c)	((__ismask(c)&(_L)) != 0)
30#define isprint(c)	((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)
31#define ispunct(c)	((__ismask(c)&(_P)) != 0)
32/* Note: isspace() must return false for %NUL-terminator */
33#define isspace(c)	((__ismask(c)&(_S)) != 0)
34#define isupper(c)	((__ismask(c)&(_U)) != 0)
35#define isxdigit(c)	((__ismask(c)&(_D|_X)) != 0)
36
37#define isascii(c) (((unsigned char)(c))<=0x7f)
38#define toascii(c) (((unsigned char)(c))&0x7f)
39
40#if __has_builtin(__builtin_isdigit)
41#define  isdigit(c) __builtin_isdigit(c)
42#else
43static inline int isdigit(int c)
44{
45	return '0' <= c && c <= '9';
46}
47#endif
48
49static inline unsigned char __tolower(unsigned char c)
50{
51	if (isupper(c))
52		c -= 'A'-'a';
53	return c;
54}
55
56static inline unsigned char __toupper(unsigned char c)
57{
58	if (islower(c))
59		c -= 'a'-'A';
60	return c;
61}
62
63#define tolower(c) __tolower(c)
64#define toupper(c) __toupper(c)
65
66/*
67 * Fast implementation of tolower() for internal usage. Do not use in your
68 * code.
69 */
70static inline char _tolower(const char c)
71{
72	return c | 0x20;
73}
74
75/* Fast check for octal digit */
76static inline int isodigit(const char c)
77{
78	return c >= '0' && c <= '7';
79}
80
81#endif