misc/libphysfs/lzma/C/Compress/Lz/LzHash.h
author Wuzzy <almikes@aol.com>
Thu, 21 Sep 2017 22:51:36 +0200
changeset 12484 943f74b7a4b9
parent 12218 bb5522e88ab2
permissions -rw-r--r--
Tweak the network and lag icons to be closer to Hedgewars style
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/* LzHash.h */
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#ifndef __C_LZHASH_H
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#define __C_LZHASH_H
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#define kHash2Size (1 << 10)
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#define kHash3Size (1 << 16)
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#define kHash4Size (1 << 20)
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#define kFix3HashSize (kHash2Size)
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#define kFix4HashSize (kHash2Size + kHash3Size)
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#define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size)
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#define HASH2_CALC hashValue = cur[0] | ((UInt32)cur[1] << 8);
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#define HASH3_CALC { \
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  UInt32 temp = g_CrcTable[cur[0]] ^ cur[1]; \
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  hash2Value = temp & (kHash2Size - 1); \
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  hashValue = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; }
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#define HASH4_CALC { \
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  UInt32 temp = g_CrcTable[cur[0]] ^ cur[1]; \
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  hash2Value = temp & (kHash2Size - 1); \
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  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
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  hashValue = (temp ^ ((UInt32)cur[2] << 8) ^ (g_CrcTable[cur[3]] << 5)) & p->hashMask; }
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#define HASH5_CALC { \
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  UInt32 temp = g_CrcTable[cur[0]] ^ cur[1]; \
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  hash2Value = temp & (kHash2Size - 1); \
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  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
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  hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (g_CrcTable[cur[3]] << 5)); \
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  hashValue = (hash4Value ^ (g_CrcTable[cur[4]] << 3)) & p->hashMask; \
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  hash4Value &= (kHash4Size - 1); }
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/* #define HASH_ZIP_CALC hashValue = ((cur[0] | ((UInt32)cur[1] << 8)) ^ g_CrcTable[cur[2]]) & 0xFFFF; */
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#define HASH_ZIP_CALC hashValue = ((cur[2] | ((UInt32)cur[0] << 8)) ^ g_CrcTable[cur[1]]) & 0xFFFF;
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#define MT_HASH2_CALC \
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  hash2Value = (g_CrcTable[cur[0]] ^ cur[1]) & (kHash2Size - 1);
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#define MT_HASH3_CALC { \
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  UInt32 temp = g_CrcTable[cur[0]] ^ cur[1]; \
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  hash2Value = temp & (kHash2Size - 1); \
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  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); }
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#define MT_HASH4_CALC { \
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  UInt32 temp = g_CrcTable[cur[0]] ^ cur[1]; \
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  hash2Value = temp & (kHash2Size - 1); \
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  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
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  hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (g_CrcTable[cur[3]] << 5)) & (kHash4Size - 1); }
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#endif