| #ifndef _LINUX_CTYPE_H |
| #define _LINUX_CTYPE_H |
| |
| /* |
| * NOTE! This ctype does not handle EOF like the standard C |
| * library is required to. |
| */ |
| |
| #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) */ |
| |
| extern const unsigned char _ctype[]; |
| |
| #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) |
| static inline int isdigit(int c) |
| { |
| return '0' <= c && c <= '9'; |
| } |
| #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) |
| /* Note: isspace() must return false for %NUL-terminator */ |
| #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) |
| |
| static inline unsigned char __tolower(unsigned char c) |
| { |
| if (isupper(c)) |
| c -= 'A'-'a'; |
| return c; |
| } |
| |
| static inline unsigned char __toupper(unsigned char c) |
| { |
| if (islower(c)) |
| c -= 'a'-'A'; |
| return c; |
| } |
| |
| #define tolower(c) __tolower(c) |
| #define toupper(c) __toupper(c) |
| |
| /* |
| * Fast implementation of tolower() for internal usage. Do not use in your |
| * code. |
| */ |
| static inline char _tolower(const char c) |
| { |
| return c | 0x20; |
| } |
| |
| /* Fast check for octal digit */ |
| static inline int isodigit(const char c) |
| { |
| return c >= '0' && c <= '7'; |
| } |
| |
| #endif |