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34 lines
995 B
34 lines
995 B
6 years ago
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/* ctype.h
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*
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* Includes isalpha, isupper, islower, isdigit, isspace, ispunct, isalnum,
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* isprint, iscntrl, toupper, tolower, toascii, iseof
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*/
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#define _U 0x01
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#define _L 0x02
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#define _N 0x04
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#define _S 0x08
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#define _P 0x10
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#define _C 0x20
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#define _X 0x40
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extern const char _ctype_[];
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#define isalpha(c) ((_ctype_+1)[(int)c]&(_U|_L))
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#define isupper(c) ((_ctype_+1)[(int)c]&_U)
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#define islower(c) ((_ctype_+1)[(int)c]&_L)
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#define isdigit(c) ((_ctype_+1)[(int)c]&_N)
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#define isxdigit(c) ((_ctype_+1)[(int)c]&(_N|_X))
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#define isspace(c) ((_ctype_+1)[(int)c]&_S)
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#define ispunct(c) ((_ctype_+1)[(int)c]&_P)
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#define isalnum(c) ((_ctype_+1)[(int)c]&(_U|_L|_N))
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#define isprint(c) ((_ctype_+1)[(int)c]&(_P|_U|_L|_N|_S))
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#define iscntrl(c) ((_ctype_+1)[(int)c]&_C)
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#define isascii(c) ((unsigned)((int)(c))<=0x7F)
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#define toupper(c) (((int)(c))-'a'+'A')
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#define tolower(c) (((int)(c))-'A'+'a')
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#define toascii(c) (((int)(c))&0x7F)
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#define iseof(c) (0x04 == (int)c)
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