Blink roll 25b6bd3a7a131ffe68d809546ad1a20707915cdc:3a503f41ae42e5b79cfcd2ff10e65afde...
[chromium-blink-merge.git] / third_party / lzma_sdk / 7zCrc.h
blob38e3e5fbc062ad64d54da74b07e1fef17c1140e0
1 /* 7zCrc.h -- CRC32 calculation
2 2009-11-21 : Igor Pavlov : Public domain */
4 #ifndef __7Z_CRC_H
5 #define __7Z_CRC_H
7 #include "Types.h"
9 EXTERN_C_BEGIN
11 extern UInt32 g_CrcTable[];
13 /* Call CrcGenerateTable one time before other CRC functions */
14 void MY_FAST_CALL CrcGenerateTable(void);
16 #define CRC_INIT_VAL 0xFFFFFFFF
17 #define CRC_GET_DIGEST(crc) ((crc) ^ CRC_INIT_VAL)
18 #define CRC_UPDATE_BYTE(crc, b) (g_CrcTable[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
20 UInt32 MY_FAST_CALL CrcUpdate(UInt32 crc, const void *data, size_t size);
21 UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size);
23 EXTERN_C_END
25 #endif