1#ifndef _LINUX_CTYPE_H
2#define _LINUX_CTYPE_H
3
4
5
6
7
8
9#define _U 0x01
10#define _L 0x02
11#define _D 0x04
12#define _C 0x08
13#define _P 0x10
14#define _S 0x20
15#define _X 0x40
16#define _SP 0x80
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
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
60
61
62static inline char _tolower(const char c)
63{
64 return c | 0x20;
65}
66
67
68static inline int isodigit(const char c)
69{
70 return c >= '0' && c <= '7';
71}
72
73#endif
74