0,0 → 1,55 |
#ifndef _LINUX_CTYPE_H |
#define _LINUX_CTYPE_H |
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/* |
* NOTE! This ctype does not handle EOF like the standard C |
* library is required to. |
*/ |
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#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) */ |
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extern const unsigned char _ctype[]; |
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#define __ismask(x) (_ctype[(int)(unsigned char)(x)]) |
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#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 isdigit(c) ((__ismask(c)&(_D)) != 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) |
/* 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) |
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#define isascii(c) (((unsigned char)(c))<=0x7f) |
#define toascii(c) (((unsigned char)(c))&0x7f) |
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static inline unsigned char __tolower(unsigned char c) |
{ |
if (isupper(c)) |
c -= 'A'-'a'; |
return c; |
} |
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static inline unsigned char __toupper(unsigned char c) |
{ |
if (islower(c)) |
c -= 'a'-'A'; |
return c; |
} |
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#define tolower(c) __tolower(c) |
#define toupper(c) __toupper(c) |
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#endif |