crc16-plain.h File Reference

#include <stddef.h>
#include <stdint.h>
#include "ws_symbol_export.h"

Go to the source code of this file.

Macros
#define	CRC_ALGO_TABLE_DRIVEN   1

Typedefs
typedef uint16_t	crc16_plain_t

Functions
long	crc16_plain_reflect (long data, size_t data_len)
WS_DLL_PUBLIC crc16_plain_t	crc16_plain_update (crc16_plain_t crc, const unsigned char *data, size_t data_len)
WS_DLL_PUBLIC uint16_t	crc16_8005_noreflect_noxor (const uint8_t *data, uint64_t data_len)

Detailed Description

http://www.tty1.net/pycrc/faq_en.html#code-ownership

Wireshark - Network traffic analyzer By Gerald Combs geral.nosp@m.d@wi.nosp@m.resha.nosp@m.rk.o.nosp@m.rg Copyright 1998 Gerald Combs

SPDX-License-Identifier: GPL-2.0-or-later

Functions and types for CRC checks.

Generated on Wed Mar 18 14:12:15 2009, by pycrc v0.7, http://www.tty1.net/pycrc/ using the configuration: Width = 16 Poly = 0x8005 XorIn = 0x0000 ReflectIn = True XorOut = 0x0000 ReflectOut = True Algorithm = table-driven Direct = True

Modified 2009-03-16 not to include <stdint.h> as our Win32 environment appears not to have it; we're using GLib types, instead.

Macro Definition Documentation

CRC_ALGO_TABLE_DRIVEN

#define CRC_ALGO_TABLE_DRIVEN   1

The definition of the used algorithm.

Typedef Documentation

crc16_plain_t

typedef uint16_t crc16_plain_t

The type of the CRC values.

This type must be big enough to contain at least 16 bits.

Function Documentation

crc16_8005_noreflect_noxor()

WS_DLL_PUBLIC uint16_t crc16_8005_noreflect_noxor	(	const uint8_t *	data,
		uint64_t	data_len
	)

Calculate the crc-16 (x^16 + x^15 + x^2 + 1) value for data. Note that this CRC is not equal to crc16_plain.

Parameters

data	Pointer to a buffer of data_len bytes.
data_len	Number of bytes in the data buffer.

Returns

The crc value.

crc16_plain_reflect()

long crc16_plain_reflect	(	long	data,
		size_t	data_len
	)

Reflect all bits of a data word of data_len bytes.

Parameters

data	The data word to be reflected.
data_len	The width of data expressed in number of bits.

Returns

The reflected data.

crc16_plain_update()

WS_DLL_PUBLIC crc16_plain_t crc16_plain_update	(	crc16_plain_t	crc,
		const unsigned char *	data,
		size_t	data_len
	)

Update the crc value with new data.

Parameters

crc	The current crc value.
data	Pointer to a buffer of data_len bytes.
data_len	Number of bytes in the data buffer.

Returns

The updated crc value.