mirror of
https://github.com/AdmiralCurtiss/MysteryGiftConvert.git
synced 2026-03-21 17:48:29 -05:00
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/**
|
|
* \file ccitt.h
|
|
* Functions and types for CRC checks.
|
|
*
|
|
* Generated on Sun Oct 30 02:18:48 2016,
|
|
* by pycrc v0.9, https://pycrc.org
|
|
* using the configuration:
|
|
* Width = 16
|
|
* Poly = 0x1021
|
|
* Xor_In = 0xffff
|
|
* ReflectIn = False
|
|
* Xor_Out = 0x0000
|
|
* ReflectOut = False
|
|
* Algorithm = bit-by-bit-fast
|
|
*****************************************************************************/
|
|
#ifndef __CCITT_H__
|
|
#define __CCITT_H__
|
|
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/**
|
|
* The definition of the used algorithm.
|
|
*
|
|
* This is not used anywhere in the generated code, but it may be used by the
|
|
* application code to call algoritm-specific code, is desired.
|
|
*****************************************************************************/
|
|
#define CRC_ALGO_BIT_BY_BIT_FAST 1
|
|
|
|
|
|
/**
|
|
* The type of the CRC values.
|
|
*
|
|
* This type must be big enough to contain at least 16 bits.
|
|
*****************************************************************************/
|
|
typedef uint_fast16_t crc_t;
|
|
|
|
|
|
/**
|
|
* Calculate the initial crc value.
|
|
*
|
|
* \return The initial crc value.
|
|
*****************************************************************************/
|
|
static inline crc_t crc_init(void)
|
|
{
|
|
return 0xffff;
|
|
}
|
|
|
|
|
|
/**
|
|
* 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.
|
|
*****************************************************************************/
|
|
crc_t crc_update(crc_t crc, const void *data, size_t data_len);
|
|
|
|
|
|
/**
|
|
* Calculate the final crc value.
|
|
*
|
|
* \param crc The current crc value.
|
|
* \return The final crc value.
|
|
*****************************************************************************/
|
|
static inline crc_t crc_finalize(crc_t crc)
|
|
{
|
|
return crc ^ 0x0000;
|
|
}
|
|
|
|
|
|
#ifdef __cplusplus
|
|
} /* closing brace for extern "C" */
|
|
#endif
|
|
|
|
#endif /* __CCITT_H__ */
|