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NetBSD 6.1.5 - man page for iscntrl (netbsd section 3)

ISCNTRL(3)			   BSD Library Functions Manual 		       ISCNTRL(3)

NAME
     iscntrl -- control character test

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     iscntrl(int c);

DESCRIPTION
     The iscntrl() function tests for any control character.

RETURN VALUES
     The iscntrl() function returns zero if the character tests false and returns non-zero if the
     character tests true.

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

STANDARDS
     The iscntrl() function conforms to ANSI X3.159-1989 (``ANSI C89'').

CAVEATS
     The argument to iscntrl() must be EOF or representable as an unsigned char; otherwise, the
     behavior is undefined.  See the CAVEATS section of ctype(3) for more details.

BSD					  April 17, 2008				      BSD


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