Index: third_party/lzma_sdk/LzHash.h |
=================================================================== |
--- third_party/lzma_sdk/LzHash.h (revision 0) |
+++ third_party/lzma_sdk/LzHash.h (revision 0) |
@@ -0,0 +1,54 @@ |
+/* LzHash.h -- HASH functions for LZ algorithms |
+2009-02-07 : Igor Pavlov : Public domain */ |
+ |
+#ifndef __LZ_HASH_H |
+#define __LZ_HASH_H |
+ |
+#define kHash2Size (1 << 10) |
+#define kHash3Size (1 << 16) |
+#define kHash4Size (1 << 20) |
+ |
+#define kFix3HashSize (kHash2Size) |
+#define kFix4HashSize (kHash2Size + kHash3Size) |
+#define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size) |
+ |
+#define HASH2_CALC hashValue = cur[0] | ((UInt32)cur[1] << 8); |
+ |
+#define HASH3_CALC { \ |
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \ |
+ hash2Value = temp & (kHash2Size - 1); \ |
+ hashValue = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; } |
+ |
+#define HASH4_CALC { \ |
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \ |
+ hash2Value = temp & (kHash2Size - 1); \ |
+ hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \ |
+ hashValue = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & p->hashMask; } |
+ |
+#define HASH5_CALC { \ |
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \ |
+ hash2Value = temp & (kHash2Size - 1); \ |
+ hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \ |
+ hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)); \ |
+ hashValue = (hash4Value ^ (p->crc[cur[4]] << 3)) & p->hashMask; \ |
+ hash4Value &= (kHash4Size - 1); } |
+ |
+/* #define HASH_ZIP_CALC hashValue = ((cur[0] | ((UInt32)cur[1] << 8)) ^ p->crc[cur[2]]) & 0xFFFF; */ |
+#define HASH_ZIP_CALC hashValue = ((cur[2] | ((UInt32)cur[0] << 8)) ^ p->crc[cur[1]]) & 0xFFFF; |
+ |
+ |
+#define MT_HASH2_CALC \ |
+ hash2Value = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1); |
+ |
+#define MT_HASH3_CALC { \ |
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \ |
+ hash2Value = temp & (kHash2Size - 1); \ |
+ hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); } |
+ |
+#define MT_HASH4_CALC { \ |
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \ |
+ hash2Value = temp & (kHash2Size - 1); \ |
+ hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \ |
+ hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & (kHash4Size - 1); } |
+ |
+#endif |
Property changes on: third_party/lzma_sdk/LzHash.h |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |