CRC16.java revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* ident "%Z%%M% %I% %E% SMI"
*
* Copyright (c) 1999-2000 by Sun Microsystems, Inc.
* All rights reserved.
*/
/**
* Copyright 1996 Active Software Inc.
*/
package sunsoft.jws.visual.rt.encoding;
public class CRC16
{
public CRC16()
{
super();
value = 0;
}
public void update(byte aByte)
{
int a = aByte;
for (int count = 7; count >= 0; count--)
{
a <<= 1;
int b = a >>> 8 & 0x1;
if ((value & 0x8000) != 0)
value = (value << 1) + b ^ 0x1021;
else
value = (value << 1) + b;
}
value = value & 0xffff;
}
public void reset()
{
value = 0;
}
public int value;
}