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- /**
- * \file crc32.h
- * Functions and types for CRC checks.
- *
- * Generated on Mon Feb 21 23:03:39 2011,
- * by pycrc v0.7.1, http://www.tty1.net/pycrc/
- * using the configuration:
- * Width = 32
- * Poly = 0x04c11db7
- * XorIn = 0xffffffff
- * ReflectIn = True
- * XorOut = 0xffffffff
- * ReflectOut = True
- * Algorithm = bit-by-bit-fast
- * Direct = True
- *****************************************************************************/
- #ifndef __CRC___H__
- #define __CRC___H__
- #include <stdint.h>
- #include <stdlib.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- /**
- * The definition of the used algorithm.
- *****************************************************************************/
- #define CRC_ALGO_BIT_BY_BIT_FAST 1
- /**
- * The type of the CRC values.
- *
- * This type must be big enough to contain at least 32 bits.
- *****************************************************************************/
- /**
- * Reflect all bits of a \a data word of \a data_len bytes.
- *
- * \param data The data word to be reflected.
- * \param data_len The width of \a data expressed in number of bits.
- * \return The reflected data.
- *****************************************************************************/
- uint32_t crc_reflect( uint32_t data, size_t data_len );
- /**
- * Calculate the initial crc value.
- *
- * \return The initial crc value.
- *****************************************************************************/
- static inline uint32_t crc_init( void )
- {
- return 0xffffffff;
- }
- /**
- * 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.
- *****************************************************************************/
- uint32_t crc32_update( uint32_t crc, const unsigned char data );
- /**
- * Calculate the final crc value.
- *
- * \param crc The current crc value.
- * \return The final crc value.
- *****************************************************************************/
- static inline uint32_t crc_finalize( uint32_t crc )
- {
- return crc_reflect( crc, 32 ) ^ 0xffffffff;
- }
- #ifdef __cplusplus
- } /* closing brace for extern "C" */
- #endif
- #endif /* __CRC___H__ */
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