b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal/* LzHash.h -- HASH functions for LZ algorithms
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal2008-10-04 : Igor Pavlov : Public domain */
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal#define kFix4HashSize (kHash2Size + kHash3Size)
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal#define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size)
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal#define HASH2_CALC hashValue = cur[0] | ((UInt32)cur[1] << 8);
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hashValue = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; }
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hashValue = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & p->hashMask; }
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)); \
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hashValue = (hash4Value ^ (p->crc[cur[4]] << 3)) & p->hashMask; \
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal/* #define HASH_ZIP_CALC hashValue = ((cur[0] | ((UInt32)cur[1] << 8)) ^ p->crc[cur[2]]) & 0xFFFF; */
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal#define HASH_ZIP_CALC hashValue = ((cur[2] | ((UInt32)cur[0] << 8)) ^ p->crc[cur[1]]) & 0xFFFF;
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hash2Value = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1);
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); }
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
b1efbcd6740f24e4bce347c64e48d9b74b472c67Alok Aggarwal hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & (kHash4Size - 1); }