|
|
1 | |
|
|
2 | - fixed hash calculation in C♯ version (Tiago Freitas Leal). |
|
|
3 | - unroll copy for small sizes, use memcpy for larger sizes, |
|
|
4 | greatly speeding up decompression in most cases. |
|
|
5 | - finally disable rep movsb - it's a big loss on modern intel cpus, |
|
|
6 | and only a small win on amd cpus. |
|
|
7 | |
|
|
8 | 3.5 Fri May 1 02:28:42 CEST 2009 |
|
|
9 | - lzf_compress did sometimes write one octet past the given output |
|
|
10 | buffer (analyzed and nice testcase by Salvatore Sanfilippo). |
|
|
11 | |
|
|
12 | 3.4 Tue Sep 2 06:45:00 CEST 2008 |
|
|
13 | - the fix from 3.3 introduced a compression bug, which is fixed in |
|
|
14 | this release (which explains the mysterious prerelease...). Thanks |
|
|
15 | once more to Clément Calmels. |
|
|
16 | |
|
|
17 | 3.3 Mon Aug 25 03:17:42 CEST 2008 |
|
|
18 | - lzf_compress could access memory after the given input buffer |
|
|
19 | when outputting back references. reported with nice testcase |
|
|
20 | by Clément Calmels. |
|
|
21 | |
|
|
22 | 3.2 Fri May 9 18:52:23 CEST 2008 |
|
|
23 | - include a workaround for failing POSIX and real-world compliance |
|
|
24 | on 64 bit windows (microsoft claims to support POSIX, but is far |
|
|
25 | from it). (bug found and analysed nicely by John Lilley). |
|
|
26 | |
|
|
27 | 3.1 Fri Nov 30 11:33:04 CET 2007 |
|
|
28 | - IMPORTANT BUGFIX: a too long final literal run would corrupt data |
|
|
29 | in the encoder (this was introduced in 3.0 only, earlier versions |
|
|
30 | are safe). |
|
|
31 | |
|
|
32 | 3.0 Tue Nov 13 22:13:09 CET 2007 |
|
|
33 | - switched to 2-clause bsd with "GPL v2 or any later version" option. |
|
|
34 | - speed up compression by ~10-15% in common cases |
|
|
35 | by some manual unrolling. |
|
|
36 | - import some compiler tricks from JSON::XS, for further speed-ups. |
|
|
37 | - tune hash functions depending on ULTRA_FAST or VERY_FAST settings. |
|
|
38 | - for typical binary data (e.g. /bin/bash, memory dumps, |
|
|
39 | canterbury corpus etc.), speed is now comparable to fastlz, but |
|
|
40 | with better compression ratio. with ULTRA_FAST, it's typically |
|
|
41 | 3-15% faster than fastlz while still maintaining a similar ratio. |
|
|
42 | (amd64 and core 2 duo, ymmv). thanks a lot for the competition :) |
|
|
43 | - undo inline assembly in compressor, it is no longer helpful. |
|
|
44 | - no changes to the decompressor. |
|
|
45 | - use a HLOG of 16 by default now (formerly 15). |
|
|
46 | |
|
|
47 | 2.1 Fri Nov 2 13:34:42 CET 2007 |
|
|
48 | - switched to a 2-clause bsd license with GPL exception. |
|
|
49 | - get rid of memcpy. |
|
|
50 | - tentatively use rep movsb on x86 and x86_64 (gcc only) for a |
|
|
51 | moderate speed improvement. |
|
|
52 | - applied patch by Kein-Hong Man to maske lzf.c compile under |
|
|
53 | the crippled mingw32 environment. |
| 1 | |
54 | |
| 2 | 2.0 Fri Feb 16 23:11:18 CET 2007 |
55 | 2.0 Fri Feb 16 23:11:18 CET 2007 |
| 3 | - replaced lzf demo by industrial-strength lzf utility with behaviour |
56 | - replaced lzf demo by industrial-strength lzf utility with behaviour |
| 4 | similar other compression utilities. Thanks for Stefan Traby for |
57 | similar other compression utilities. Thanks for Stefan Traby for |
| 5 | rewriting it! |
58 | rewriting it! |
| … | |
… | |
| 20 | - default HLOG size is now 15 (cpu caches have increased). |
73 | - default HLOG size is now 15 (cpu caches have increased). |
| 21 | - documentation fixes. |
74 | - documentation fixes. |
| 22 | |
75 | |
| 23 | 1.51 Thu Apr 14 22:15:46 CEST 2005 |
76 | 1.51 Thu Apr 14 22:15:46 CEST 2005 |
| 24 | - incorporated C♯ implementation of both the en- and decoder, |
77 | - incorporated C♯ implementation of both the en- and decoder, |
| 25 | written by "Oren J. Maurice <oymaurice@hazorea.org.il>". |
78 | written by "Oren J. Maurice". |
| 26 | You can find it in the cs/ subdirectory. |
79 | You can find it in the cs/ subdirectory. |
| 27 | - make FRST, NEXT IDX overridable if lzf_c.c is directly included |
80 | - make FRST, NEXT IDX overridable if lzf_c.c is directly included |
| 28 | in the code. |
81 | in the code. |
| 29 | |
82 | |
| 30 | 1.5 Tue Mar 8 20:23:23 CET 2005 |
83 | 1.5 Tue Mar 8 20:23:23 CET 2005 |
