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1870 serge 1
#ifndef _LINUX_CTYPE_H
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#define _LINUX_CTYPE_H
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/*
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 * NOTE! This ctype does not handle EOF like the standard C
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 * library is required to.
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 */
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#define _U	0x01	/* upper */
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#define _L	0x02	/* lower */
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#define _D	0x04	/* digit */
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#define _C	0x08	/* cntrl */
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#define _P	0x10	/* punct */
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#define _S	0x20	/* white space (space/lf/tab) */
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#define _X	0x40	/* hex digit */
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#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)
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#define isalpha(c)	((__ismask(c)&(_U|_L)) != 0)
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#define iscntrl(c)	((__ismask(c)&(_C)) != 0)
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#define isdigit(c)	((__ismask(c)&(_D)) != 0)
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#define isgraph(c)	((__ismask(c)&(_P|_U|_L|_D)) != 0)
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#define islower(c)	((__ismask(c)&(_L)) != 0)
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#define isprint(c)	((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)
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#define ispunct(c)	((__ismask(c)&(_P)) != 0)
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/* Note: isspace() must return false for %NUL-terminator */
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#define isspace(c)	((__ismask(c)&(_S)) != 0)
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#define isupper(c)	((__ismask(c)&(_U)) != 0)
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#define isxdigit(c)	((__ismask(c)&(_D|_X)) != 0)
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#define isascii(c) (((unsigned char)(c))<=0x7f)
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#define toascii(c) (((unsigned char)(c))&0x7f)
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static inline unsigned char __tolower(unsigned char c)
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{
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	if (isupper(c))
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		c -= 'A'-'a';
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	return c;
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}
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static inline unsigned char __toupper(unsigned char c)
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{
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	if (islower(c))
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		c -= 'a'-'A';
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	return c;
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}
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#define tolower(c) __tolower(c)
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#define toupper(c) __toupper(c)
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2967 Serge 55
/*
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 * Fast implementation of tolower() for internal usage. Do not use in your
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 * code.
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 */
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static inline char _tolower(const char c)
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{
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	return c | 0x20;
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}
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4065 Serge 64
/* Fast check for octal digit */
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static inline int isodigit(const char c)
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{
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	return c >= '0' && c <= '7';
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}
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1870 serge 70
#endif