scanc.9 revision 1.4
$NetBSD: scanc.9,v 1.4 2013/04/24 00:56:14 yamt Exp $
Copyright (c)2011,2013 YAMAMOTO Takashi,
All rights reserved.
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.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
------------------------------------------------------------
.Dd April 24, 2013 .Dt SCANC 9 .Os ------------------------------------------------------------
.Sh NAME .Nm scanc .Nd use byte string as lookup table index ------------------------------------------------------------
.Sh SYNOPSIS n lib/libkern/libkern.h - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
.Ft int .Fn scanc \ "u_int size" "const u_char *cp" "const u_char table[]" "int mask" ------------------------------------------------------------
.Sh DESCRIPTION The .Fn scanc function scans the byte string .Fa cp , whose length is .Fa size . A character in the string is used as an index in the 256-byte .Fa table . If a bitwise-AND of the byte from the table and .Fa mask isn't zero or the string is exhausted, the scan stops. ------------------------------------------------------------
.Sh RETURN VALUES The .Fn scanc function returns the length of the rest of the string, including the character which made the scan stop. If the .Fn scanc function exhausted the string, it returns 0. ------------------------------------------------------------
.Sh HISTORY The .Fn scanc function emulates a VAX instruction with the same name.
Copyright (c)2011,2013 YAMAMOTO Takashi,
All rights reserved.
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.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
------------------------------------------------------------
.Dd April 24, 2013 .Dt SCANC 9 .Os ------------------------------------------------------------
.Sh NAME .Nm scanc .Nd use byte string as lookup table index ------------------------------------------------------------
.Sh SYNOPSIS n lib/libkern/libkern.h - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
.Ft int .Fn scanc \ "u_int size" "const u_char *cp" "const u_char table[]" "int mask" ------------------------------------------------------------
.Sh DESCRIPTION The .Fn scanc function scans the byte string .Fa cp , whose length is .Fa size . A character in the string is used as an index in the 256-byte .Fa table . If a bitwise-AND of the byte from the table and .Fa mask isn't zero or the string is exhausted, the scan stops. ------------------------------------------------------------
.Sh RETURN VALUES The .Fn scanc function returns the length of the rest of the string, including the character which made the scan stop. If the .Fn scanc function exhausted the string, it returns 0. ------------------------------------------------------------
.Sh HISTORY The .Fn scanc function emulates a VAX instruction with the same name.