ctype man page on 4.4BSD

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CTYPE(3)		 BSD Library Functions Manual		      CTYPE(3)

     isalnum, isalpha, isascii, isblank, iscntrl, isdigit, isgraph, islower,
     isprint, ispunct, isspace, isupper, isxdigit, toascii tolower, toupper, —
     character classification macros

     #include <ctype.h>
     int c

     isalnum(int c);

     isalpha(int c);

     isascii(int c);

     iscntrl(int c);

     isdigit(int c);

     isgraph(int c);

     islower(int c);

     isprint(int c);

     ispunct(int c);

     isspace(int c);

     isupper(int c);

     isxdigit(int c);

     toascii(int c);

     tolower(int c);

     toupper(int c);

     The above functions perform character tests and conversions on the inte‐
     ger c.  They are available as macros, defined in the include file
     ⟨ctype.h⟩, or as true functions in the C library.	See the specific man‐
     ual pages for more information.

     isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3),
     isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3), isupper(3),
     isxdigit(3), toascii(3), tolower(3), toupper(3), ascii(7)

     These functions, except for isblank(), toupper(), tolower() and
     toascii(), conform to ANSI X3.159-1989 (“ANSI C89”).

BSD				 June 4, 1993				   BSD

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