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Macros | Typedefs | Functions
crc16-plain.h File Reference
#include "ws_symbol_export.h"
#include <glib.h>
#include <stdlib.h>

Go to the source code of this file.

Macros

#define CRC_ALGO_TABLE_DRIVEN   1
 

Typedefs

typedef guint16 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 guint16 crc16_8005_noreflect_noxor (const guint8 *data, guint64 data_len)
 

Detailed Description

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

#define CRC_ALGO_TABLE_DRIVEN   1

The definition of the used algorithm.

Typedef Documentation

typedef guint16 crc16_plain_t

The type of the CRC values.

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

Function Documentation

WS_DLL_PUBLIC guint16 crc16_8005_noreflect_noxor ( const guint8 *  data,
guint64  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
dataPointer to a buffer of data_len bytes.
data_lenNumber of bytes in the data buffer.
Returns
The crc value.
long crc16_plain_reflect ( long  data,
size_t  data_len 
)

Reflect all bits of a data word of data_len bytes.

Parameters
dataThe data word to be reflected.
data_lenThe width of data expressed in number of bits.
Returns
The reflected data.
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
crcThe current crc value.
dataPointer to a buffer of data_len bytes.
data_lenNumber of bytes in the data buffer.
Returns
The updated crc value.