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#ifndef __CRC32_H__ |
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#define __CRC32_H__ |
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|
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#ifndef _ANSI_ARGS_ |
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#ifdef PROTOTYPES |
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#define _ANSI_ARGS_(c) c |
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#else |
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#define _ANSI_ARGS_(c) () |
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#endif |
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#endif |
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|
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#include "ecb.h" |
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|
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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|
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typedef uint32_t crc32_t; |
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|
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#define CRC32_INIT ((crc32_t)0) |
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|
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crc32_t uu_crc32 _ANSI_ARGS_((crc32_t prev, const void *data, unsigned int len)); |
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/* |
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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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|
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uint32_t uu_crc32_combine(uint32_t crcA, uint32_t crcB, size_t lengthB); |
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|
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#ifdef __cplusplus |
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} |
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#endif |
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#endif |
