goat3d

annotate libs/openctm/liblzma/LzHash.h @ 42:6c8a6ee24448

added vs2008 solution
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 01 Dec 2013 01:32:12 +0200
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nuclear@14 1 /* LzHash.h -- HASH functions for LZ algorithms
nuclear@14 2 2008-10-04 : Igor Pavlov : Public domain */
nuclear@14 3
nuclear@14 4 #ifndef __LZHASH_H
nuclear@14 5 #define __LZHASH_H
nuclear@14 6
nuclear@14 7 #define kHash2Size (1 << 10)
nuclear@14 8 #define kHash3Size (1 << 16)
nuclear@14 9 #define kHash4Size (1 << 20)
nuclear@14 10
nuclear@14 11 #define kFix3HashSize (kHash2Size)
nuclear@14 12 #define kFix4HashSize (kHash2Size + kHash3Size)
nuclear@14 13 #define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size)
nuclear@14 14
nuclear@14 15 #define HASH2_CALC hashValue = cur[0] | ((UInt32)cur[1] << 8);
nuclear@14 16
nuclear@14 17 #define HASH3_CALC { \
nuclear@14 18 UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
nuclear@14 19 hash2Value = temp & (kHash2Size - 1); \
nuclear@14 20 hashValue = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; }
nuclear@14 21
nuclear@14 22 #define HASH4_CALC { \
nuclear@14 23 UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
nuclear@14 24 hash2Value = temp & (kHash2Size - 1); \
nuclear@14 25 hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
nuclear@14 26 hashValue = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & p->hashMask; }
nuclear@14 27
nuclear@14 28 #define HASH5_CALC { \
nuclear@14 29 UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
nuclear@14 30 hash2Value = temp & (kHash2Size - 1); \
nuclear@14 31 hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
nuclear@14 32 hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)); \
nuclear@14 33 hashValue = (hash4Value ^ (p->crc[cur[4]] << 3)) & p->hashMask; \
nuclear@14 34 hash4Value &= (kHash4Size - 1); }
nuclear@14 35
nuclear@14 36 /* #define HASH_ZIP_CALC hashValue = ((cur[0] | ((UInt32)cur[1] << 8)) ^ p->crc[cur[2]]) & 0xFFFF; */
nuclear@14 37 #define HASH_ZIP_CALC hashValue = ((cur[2] | ((UInt32)cur[0] << 8)) ^ p->crc[cur[1]]) & 0xFFFF;
nuclear@14 38
nuclear@14 39
nuclear@14 40 #define MT_HASH2_CALC \
nuclear@14 41 hash2Value = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1);
nuclear@14 42
nuclear@14 43 #define MT_HASH3_CALC { \
nuclear@14 44 UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
nuclear@14 45 hash2Value = temp & (kHash2Size - 1); \
nuclear@14 46 hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); }
nuclear@14 47
nuclear@14 48 #define MT_HASH4_CALC { \
nuclear@14 49 UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
nuclear@14 50 hash2Value = temp & (kHash2Size - 1); \
nuclear@14 51 hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
nuclear@14 52 hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & (kHash4Size - 1); }
nuclear@14 53
nuclear@14 54 #endif