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ctype.h
Package: linux-2.4.20.tar.gz [view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 1k
Category:
Linux-Unix program
Development Platform:
Unix_Linux
- #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 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)
- #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)
- #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)
- #endif