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/*
* crc7.h
*
* Functions and types for CRC checks.
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0+
*
* Generated on Wed Jul 11 17:24:57 2012,
* by pycrc v0.7.10, http://www.tty1.net/pycrc/
* using the configuration:
* Width = 7
* Poly = 0x45
* XorIn = 0x00
* ReflectIn = False
* XorOut = 0x00
* ReflectOut = False
* Algorithm = table-driven
****************************************************************************
*/
#ifndef __CRC7__H__
#define __CRC7__H__
#include "ws_symbol_export.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* The definition of the used algorithm.
*****************************************************************************/
#define CRC_ALGO_TABLE_DRIVEN 1
/**
* Calculate the initial crc value.
*
* \return The initial crc value.
*****************************************************************************/
static inline guint8 crc7init(void)
{
return 0x00 << 1;
}
/**
* Update the crc value with new data.
*
* \param crc The current crc value.
* \param data Pointer to a buffer of \a data_len bytes.
* \param data_len Number of bytes in the \a data buffer.
* \return The updated crc value.
*****************************************************************************/
WS_DLL_PUBLIC guint8 crc7update(guint8 crc, const unsigned char *data, int data_len);
/**
* Calculate the final crc value.
*
* \param crc The current crc value.
* \return The final crc value.
*****************************************************************************/
static inline guint8 crc7finalize(guint8 crc)
{
return (crc >> 1) ^ 0x00;
}
#ifdef __cplusplus
} /* closing brace for extern "C" */
#endif
#endif /* __CRC7__H__ */
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