iscntrl.3 revision 84306
Copyright (c) 1991, 1993
The Regents of the University of California. All rights reserved.
This code is derived from software contributed to Berkeley by
the American National Standards Committee X3, on Information
Processing Systems.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by the University of
California, Berkeley and its contributors.
4. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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SUCH DAMAGE.
@(#)iscntrl.3 8.1 (Berkeley) 6/4/93
$FreeBSD: head/lib/libc/locale/iscntrl.3 84306 2001-10-01 16:09:29Z ru $
.Dd June 4, 1993 .Dt ISCNTRL 3 .Os .Sh NAME .Nm iscntrl .Nd control character test .Sh LIBRARY .Lb libc .Sh SYNOPSIS n ctype.h .Ft int .Fn iscntrl "int c" .Sh DESCRIPTION The .Fn iscntrl function tests for any control character. For single C .Va char Ns s locales (see .Xr multibyte 3 ) the value of the argument is representable as an .Li unsigned char or the value of .Dv EOF . In the ASCII character set, this includes the following characters (with their numeric values shown in octal):
The Regents of the University of California. All rights reserved.
This code is derived from software contributed to Berkeley by
the American National Standards Committee X3, on Information
Processing Systems.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by the University of
California, Berkeley and its contributors.
4. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
@(#)iscntrl.3 8.1 (Berkeley) 6/4/93
$FreeBSD: head/lib/libc/locale/iscntrl.3 84306 2001-10-01 16:09:29Z ru $
.Dd June 4, 1993 .Dt ISCNTRL 3 .Os .Sh NAME .Nm iscntrl .Nd control character test .Sh LIBRARY .Lb libc .Sh SYNOPSIS n ctype.h .Ft int .Fn iscntrl "int c" .Sh DESCRIPTION The .Fn iscntrl function tests for any control character. For single C .Va char Ns s locales (see .Xr multibyte 3 ) the value of the argument is representable as an .Li unsigned char or the value of .Dv EOF . In the ASCII character set, this includes the following characters (with their numeric values shown in octal):
p l -column 000_``0''__ 000_``0''__ 000_``0''__ 000_``0''__ 000_``0''__ t "000 nul \t001 soh \t002 stx \t003 etx \t004 eot" t "005 enq \t006 ack \t007 bel \t010 bs \t011 ht" t "012 nl \t013 vt \t014 np \t015 cr \t016 so" t "017 si \t020 dle \t021 dc1 \t022 dc2 \t023 dc3" t "024 dc4 \t025 nak \t026 syn \t027 etb \t030 can" t "031 em \t032 sub \t033 esc \t034 fs \t035 gs" t "036 rs \t037 us \t177 del" .El .Sh RETURN VALUES The .Fn iscntrl function returns zero if the character tests false and returns non-zero if the character tests true. .Sh SEE ALSO .Xr ctype 3 , .Xr multibyte 3 , .Xr ascii 7 .Sh STANDARDS The .Fn iscntrl function conforms to .St -isoC .