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 */
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 */
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#ifndef CRC32_H_SENTINEL
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#ifndef CRC32_H_SENTINEL
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#define CRC32_H_SENTINEL
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#define CRC32_H_SENTINEL
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/* instead of calling crc32_init() you can just assign this value */
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/* always initialize your crc32 with this value before any computation */
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#define CRC32_INITVAL (0xFFFFFFFFlu)
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#define CRC32_INITVAL (0xFFFFFFFFlu)
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unsigned long crc32_init(void);
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/* This computes a 32 bit CRC of the data in the buffer, and returns the
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/* This computes a 32 bit CRC of the data in the buffer, and returns the
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   CRC.  The polynomial used is 0xedb88320. */
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   CRC.  The polynomial used is 0xedb88320. */
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void crc32_feed(unsigned long *crc32val, const unsigned char *buf, unsigned int len);
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void crc32_feed(unsigned long *crc32val, const unsigned char *buf, unsigned int len);
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void crc32_finish(unsigned long *crc32val);
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void crc32_finish(unsigned long *crc32val);