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| author | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-03-29 16:04:01 +0100 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-03-29 16:04:01 +0100 |
| commit | 88083f8c683c18f4de68a20c863a82a9da65db8f (patch) | |
| tree | 926656892d9d80260da02ea8ea71031b140c51df /other-licenses/7zstub/src/C/LzHash.h | |
| parent | f999f544aad04069b03704d994a99352263f600b (diff) | |
| parent | 843e4ceffd6ce21a6e6db37419335eafdc543e18 (diff) | |
| download | UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.gz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.lz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.xz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.zip | |
Merge branch 'master' into Sync-weave
Diffstat (limited to 'other-licenses/7zstub/src/C/LzHash.h')
| -rw-r--r-- | other-licenses/7zstub/src/C/LzHash.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/C/LzHash.h b/other-licenses/7zstub/src/C/LzHash.h new file mode 100644 index 000000000..219144407 --- /dev/null +++ b/other-licenses/7zstub/src/C/LzHash.h @@ -0,0 +1,57 @@ +/* LzHash.h -- HASH functions for LZ algorithms
+2015-04-12 : 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 hv = cur[0] | ((UInt32)cur[1] << 8);
+
+#define HASH3_CALC { \
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+ h2 = temp & (kHash2Size - 1); \
+ hv = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; }
+
+#define HASH4_CALC { \
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+ h2 = temp & (kHash2Size - 1); \
+ temp ^= ((UInt32)cur[2] << 8); \
+ h3 = temp & (kHash3Size - 1); \
+ hv = (temp ^ (p->crc[cur[3]] << 5)) & p->hashMask; }
+
+#define HASH5_CALC { \
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+ h2 = temp & (kHash2Size - 1); \
+ temp ^= ((UInt32)cur[2] << 8); \
+ h3 = temp & (kHash3Size - 1); \
+ temp ^= (p->crc[cur[3]] << 5); \
+ h4 = temp & (kHash4Size - 1); \
+ hv = (temp ^ (p->crc[cur[4]] << 3)) & p->hashMask; }
+
+/* #define HASH_ZIP_CALC hv = ((cur[0] | ((UInt32)cur[1] << 8)) ^ p->crc[cur[2]]) & 0xFFFF; */
+#define HASH_ZIP_CALC hv = ((cur[2] | ((UInt32)cur[0] << 8)) ^ p->crc[cur[1]]) & 0xFFFF;
+
+
+#define MT_HASH2_CALC \
+ h2 = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1);
+
+#define MT_HASH3_CALC { \
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+ h2 = temp & (kHash2Size - 1); \
+ h3 = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); }
+
+#define MT_HASH4_CALC { \
+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+ h2 = temp & (kHash2Size - 1); \
+ temp ^= ((UInt32)cur[2] << 8); \
+ h3 = temp & (kHash3Size - 1); \
+ h4 = (temp ^ (p->crc[cur[3]] << 5)) & (kHash4Size - 1); }
+
+#endif
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