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35 lines
1.0 KiB
35 lines
1.0 KiB
3 years ago
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#ifndef _CTYPE_H
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#define _CTYPE_H
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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 unsigned char _ctype[];
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extern char _ctmp;
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#define isalnum(c) ((_ctype+1)[c]&(_U|_L|_D))
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#define isalpha(c) ((_ctype+1)[c]&(_U|_L))
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#define iscntrl(c) ((_ctype+1)[c]&(_C))
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#define isdigit(c) ((_ctype+1)[c]&(_D))
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#define isgraph(c) ((_ctype+1)[c]&(_P|_U|_L|_D))
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#define islower(c) ((_ctype+1)[c]&(_L))
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#define isprint(c) ((_ctype+1)[c]&(_P|_U|_L|_D|_SP))
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#define ispunct(c) ((_ctype+1)[c]&(_P))
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#define isspace(c) ((_ctype+1)[c]&(_S))
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#define isupper(c) ((_ctype+1)[c]&(_U))
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#define isxdigit(c) ((_ctype+1)[c]&(_D|_X))
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#define isascii(c) (((unsigned) c)<=0x7f)
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#define toascii(c) (((unsigned) c)&0x7f)
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#define tolower(c) (_ctmp=c,isupper(_ctmp)?_ctmp-('A'-'a'):_ctmp)
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#define toupper(c) (_ctmp=c,islower(_ctmp)?_ctmp-('a'-'A'):_ctmp)
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#endif
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