ctype man page on 4.4BSD

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

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

SYNOPSIS
     #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);

DESCRIPTION
     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.

SEE ALSO
     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)

STANDARDS
     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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