crc.h File Reference

Header file for CRC32 checksum calculation. More...

#include "internal/internal.h"

Include dependency graph for crc.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	CRC32_POLYNOMIAL   0xEDB88320

Functions
HA_EXTERN_C_BEG HA_PUBFUN uint32_t	ha_crc32_hash (ha_inbuf_t data, size_t len)
	Computes the CRC32 checksum in a single operation.

Detailed Description

Header file for CRC32 checksum calculation.

This file provides the definitions and function declaration for computing the CRC32 checksum, a cyclic redundancy check used to detect errors in data. It includes the definition of the CRC32 polynomial and a convenient one-shot function that performs initialization, update, and finalization of the CRC32 calculation in a single call.

Note

The CRC32 calculation uses the commonly used 32-bit polynomial (0xEDB88320).

See also

https://en.wikipedia.org/wiki/Cyclic_redundancy_check

Definition in file crc.h.

Macro Definition Documentation

CRC32_POLYNOMIAL

#define CRC32_POLYNOMIAL   0xEDB88320

Definition at line 30 of file crc.h.

Function Documentation

ha_crc32_hash()

HA_EXTERN_C_BEG HA_PUBFUN uint32_t ha_crc32_hash	(	ha_inbuf_t	data,
		size_t	len )

Computes the CRC32 checksum in a single operation.

This function calculates the CRC32 checksum of the given data using the CRC32 algorithm, starting from an initial value of 0xFFFFFFFF and finalizing with a bitwise complement. It is a convenient function that combines the initialization, update, and finalization steps into a single operation.

Parameters

data	Pointer to the data buffer for which the CRC32 checksum will be computed.
len	The length of the data in bytes.

Returns

The computed CRC32 checksum.