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Side by Side Diff: src/liblzma/lz/lz_encoder_hash.h

Issue 12568011: Update XZ Utils to 5.0.4 (third_party) (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/xz/
Patch Set: Created 7 years, 9 months ago
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1 /////////////////////////////////////////////////////////////////////////////// 1 ///////////////////////////////////////////////////////////////////////////////
2 // 2 //
3 /// \file lz_encoder_hash.h 3 /// \file lz_encoder_hash.h
4 /// \brief Hash macros for match finders 4 /// \brief Hash macros for match finders
5 // 5 //
6 // Author: Igor Pavlov 6 // Author: Igor Pavlov
7 // 7 //
8 // This file has been put into the public domain. 8 // This file has been put into the public domain.
9 // You can do whatever you want with this file. 9 // You can do whatever you want with this file.
10 // 10 //
(...skipping 21 matching lines...) Expand all
32 #define HASH_3_MASK (HASH_3_SIZE - 1) 32 #define HASH_3_MASK (HASH_3_SIZE - 1)
33 #define HASH_4_MASK (HASH_4_SIZE - 1) 33 #define HASH_4_MASK (HASH_4_SIZE - 1)
34 34
35 #define FIX_3_HASH_SIZE (HASH_2_SIZE) 35 #define FIX_3_HASH_SIZE (HASH_2_SIZE)
36 #define FIX_4_HASH_SIZE (HASH_2_SIZE + HASH_3_SIZE) 36 #define FIX_4_HASH_SIZE (HASH_2_SIZE + HASH_3_SIZE)
37 #define FIX_5_HASH_SIZE (HASH_2_SIZE + HASH_3_SIZE + HASH_4_SIZE) 37 #define FIX_5_HASH_SIZE (HASH_2_SIZE + HASH_3_SIZE + HASH_4_SIZE)
38 38
39 // Endianness doesn't matter in hash_2_calc() (no effect on the output). 39 // Endianness doesn't matter in hash_2_calc() (no effect on the output).
40 #ifdef TUKLIB_FAST_UNALIGNED_ACCESS 40 #ifdef TUKLIB_FAST_UNALIGNED_ACCESS
41 # define hash_2_calc() \ 41 # define hash_2_calc() \
42 » » const uint32_t hash_value = *(const uint16_t *)(cur); 42 » » const uint32_t hash_value = *(const uint16_t *)(cur)
43 #else 43 #else
44 # define hash_2_calc() \ 44 # define hash_2_calc() \
45 const uint32_t hash_value \ 45 const uint32_t hash_value \
46 = (uint32_t)(cur[0]) | ((uint32_t)(cur[1]) << 8) 46 = (uint32_t)(cur[0]) | ((uint32_t)(cur[1]) << 8)
47 #endif 47 #endif
48 48
49 #define hash_3_calc() \ 49 #define hash_3_calc() \
50 const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \ 50 const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \
51 const uint32_t hash_2_value = temp & HASH_2_MASK; \ 51 const uint32_t hash_2_value = temp & HASH_2_MASK; \
52 const uint32_t hash_value \ 52 const uint32_t hash_value \
(...skipping 46 matching lines...) Expand 10 before | Expand all | Expand 10 after
99 99
100 #define mt_hash_4_calc() \ 100 #define mt_hash_4_calc() \
101 const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \ 101 const uint32_t temp = hash_table[cur[0]] ^ cur[1]; \
102 const uint32_t hash_2_value = temp & HASH_2_MASK; \ 102 const uint32_t hash_2_value = temp & HASH_2_MASK; \
103 const uint32_t hash_3_value \ 103 const uint32_t hash_3_value \
104 = (temp ^ ((uint32_t)(cur[2]) << 8)) & HASH_3_MASK; \ 104 = (temp ^ ((uint32_t)(cur[2]) << 8)) & HASH_3_MASK; \
105 const uint32_t hash_4_value = (temp ^ ((uint32_t)(cur[2]) << 8) ^ \ 105 const uint32_t hash_4_value = (temp ^ ((uint32_t)(cur[2]) << 8) ^ \
106 (hash_table[cur[3]] << 5)) & HASH_4_MASK 106 (hash_table[cur[3]] << 5)) & HASH_4_MASK
107 107
108 #endif 108 #endif
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