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#ifndef __CRC32_H__ |
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#define __CRC32_H__ |
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#include "ecb.h" |
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1.6 |
#include "uuint.h" |
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1.1 |
#ifdef __cplusplus |
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extern "C" { |
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#endif |
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1.4 |
typedef uint32_t crc32_t; |
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1.1 |
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1.4 |
#define CRC32_INIT ((crc32_t)0) |
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1.1 |
/* |
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1.6 |
* Update a running crc with the bytes buf[0..len-1] and return the updated |
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* crc. If buf is NULL, this function returns the required initial value |
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* for the crc. Pre- and post-conditioning (one's complement) is performed |
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* within this function so it shouldn't be done by the application. |
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* Usage example: |
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* |
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* uLong crc = CRC32_INIT; |
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* |
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* while (read_buffer (buffer, length) != EOF) { |
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* crc = crc32 (crc, buffer, length); |
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* } |
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* if (crc != original_crc) error (); |
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*/ |
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UULIBINT_FUNC crc32_t uu_crc32 (crc32_t prev, const void *data, unsigned int len); |
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1.1 |
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1.6 |
/* |
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* This calculates the crc of a block of data consisting of two |
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* parts, using only their CRCs. This is used to quickly combine |
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* part CRCs into a full file CRC. |
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*/ |
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UULIBINT_FUNC uint32_t uu_crc32_combine (uint32_t crcA, uint32_t crcB, size_t lengthB); |
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1.5 |
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1.1 |
#ifdef __cplusplus |
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} |
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#endif |
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#endif |
