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3.1 Fri Nov 30 11:33:04 CET 2007 |
| 2 |
- IMPORTANT BUGFIX: a too long final literal run would corrupt data |
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in the encoder. |
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|
| 5 |
3.0 Tue Nov 13 22:13:09 CET 2007 |
| 6 |
- switched to 2-clause bsd with "GPL v2 or any later version" option. |
| 7 |
- speed up compression by ~10-15% in common cases |
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by some manual unrolling. |
| 9 |
- import some compiler tricks from JSON::XS, for further speed-ups. |
| 10 |
- tune hash functions depending on ULTRA_FAST or VERY_FAST settings. |
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- for typical binary data (e.g. /bin/bash, memory dumps, |
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canterbury corpus etc.), speed is now comparable to fastlz, but |
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with better compression ratio. with ULTRA_FAST, it's typically |
| 14 |
3-15% faster than fastlz while still maintaining a similar ratio. |
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(amd64 and core 2 duo, ymmv). thanks a lot for the competition :) |
| 16 |
- undo inline assembly in compressor, it is no longer helpful. |
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- no changes to the decompressor. |
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- use a HLOG of 16 by default now (formerly 15). |
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|
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2.1 Fri Nov 2 13:34:42 CET 2007 |
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- switched to a 2-clause bsd license with GPL exception. |
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- get rid of memcpy. |
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- tentatively use rep movsb on x86 and x86_64 (gcc only) for a |
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moderate speed improvement. |
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- applied patch by Kein-Hong Man to maske lzf.c compile under |
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the crippled mingw32 environment. |
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|
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2.0 Fri Feb 16 23:11:18 CET 2007 |
| 29 |
- replaced lzf demo by industrial-strength lzf utility with behaviour |
| 30 |
similar other compression utilities. Thanks for Stefan Traby for |
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rewriting it! |
| 32 |
- fix state arg prototype. |
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|
| 34 |
1.7 Wed Sep 27 17:29:15 CEST 2006 |
| 35 |
- remove bogus "unlzf" patch. |
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note to self: never accept well-meant patches. |
| 37 |
- make lzf more robust in presence of padding bytes or sudden eof. |
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|
| 39 |
1.6 Fri Jul 7 17:31:26 CEST 2006 |
| 40 |
- the lzf example utility will now uncompress if invoked |
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as "unlzf" (patch by Scott Feeney). |
| 42 |
- add CHECK_INPUT option that adds more checks for input |
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data validity. |
| 44 |
- help applications that do not pass in the correct length |
| 45 |
(such as php) by returning either EINVAL or E2BIG. |
| 46 |
- default HLOG size is now 15 (cpu caches have increased). |
| 47 |
- documentation fixes. |
| 48 |
|
| 49 |
1.51 Thu Apr 14 22:15:46 CEST 2005 |
| 50 |
- incorporated C♯ implementation of both the en- and decoder, |
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written by "Oren J. Maurice <oymaurice@hazorea.org.il>". |
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You can find it in the cs/ subdirectory. |
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- make FRST, NEXT IDX overridable if lzf_c.c is directly included |
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in the code. |
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|
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1.5 Tue Mar 8 20:23:23 CET 2005 |
| 57 |
- incorporated improvements by Adam D. Moss, |
| 58 |
which includes a new VERY_FAST mode which is |
| 59 |
a bit slower than ULTRA_FAST but much better, |
| 60 |
and enabled it as default. |
| 61 |
|
| 62 |
1.401 Thu Mar 3 18:00:52 CET 2005 |
| 63 |
- use cstring in c++, not string.h. |
| 64 |
- change of contact address. |
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|
| 66 |
1.4 Wed Dec 15 08:08:49 CET 2004 |
| 67 |
- very very slight tuning of the hashing function. |
| 68 |
|
| 69 |
1.3 Thu Mar 25 15:41:17 CET 2004 |
| 70 |
- changed license of lzf core code to explicitly allow |
| 71 |
relicensing under the GPLv2. |
| 72 |
- added VPATH support as suggested by Björn Eriksson. |
| 73 |
|
| 74 |
1.2 Mon Dec 29 13:47:28 CET 2003 |
| 75 |
- avoid spurious memory accesses after the to-be-compressed |
| 76 |
memory region. originally reported by Michal Zalewski. |
| 77 |
- flip LZF_STACK_ARG meaning (to be correct). |
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|
| 79 |
1.1 Tue Dec 23 05:48:32 CET 2003 |
| 80 |
- removed #warn directive, it's not worth the hassle. |
| 81 |
- add LZF_STACK_ARG and AVOID_ERRNO configurations |
| 82 |
for embedded systems. |
| 83 |
- make it compile cleanly as c++. |
| 84 |
- some small documentation and code fixes. |
| 85 |
|
| 86 |
1.0 Sun Nov 17 12:37:37 CET 2002 |
| 87 |
- slightly better compression ratio, almost unmeasurably |
| 88 |
slower. |
| 89 |
- some documentation fixes. |
| 90 |
|
| 91 |
0.4 Thu Jun 13 14:11:10 CEST 2002 |
| 92 |
- typoe fix. |
| 93 |
- lzf demo program now properly decompresses small files. |
| 94 |
- fix another 64 bit issue, found by Laurent Deniel. |
| 95 |
|
| 96 |
0.3 Tue Jan 16 13:21:14 CET 2001 |
| 97 |
- fix silly beginners 32/64 bit mistake. |
| 98 |
|
| 99 |
0.2 Thu Jan 4 05:56:42 CET 2001 |
| 100 |
- now totally independent of autoconfig, for |
| 101 |
easy inclusion into other programs. |
| 102 |
- much better fine-tuning, faster and better than 0.1. |
| 103 |
|
| 104 |
0.1 2000 |
| 105 |
- initial release. |
