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1 | |
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2 | - include a workaround for a compiler bug on 64 bit windows |
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3 | (microsoft claims to support POSIX, but is far from it). |
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4 | (analysed nicely by John Lilley). |
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5 | |
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6 | 3.1 Fri Nov 30 11:33:04 CET 2007 |
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7 | - IMPORTANT BUGFIX: a too long final literal run would corrupt data |
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8 | in the encoder (this was introduced in 3.0 only, earlier versions |
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9 | are safe). |
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10 | |
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11 | 3.0 Tue Nov 13 22:13:09 CET 2007 |
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12 | - switched to 2-clause bsd with "GPL v2 or any later version" option. |
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13 | - speed up compression by ~10-15% in common cases |
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14 | by some manual unrolling. |
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15 | - import some compiler tricks from JSON::XS, for further speed-ups. |
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16 | - tune hash functions depending on ULTRA_FAST or VERY_FAST settings. |
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17 | - for typical binary data (e.g. /bin/bash, memory dumps, |
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18 | canterbury corpus etc.), speed is now comparable to fastlz, but |
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19 | with better compression ratio. with ULTRA_FAST, it's typically |
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20 | 3-15% faster than fastlz while still maintaining a similar ratio. |
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21 | (amd64 and core 2 duo, ymmv). thanks a lot for the competition :) |
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22 | - undo inline assembly in compressor, it is no longer helpful. |
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23 | - no changes to the decompressor. |
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24 | - use a HLOG of 16 by default now (formerly 15). |
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25 | |
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26 | 2.1 Fri Nov 2 13:34:42 CET 2007 |
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27 | - switched to a 2-clause bsd license with GPL exception. |
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28 | - get rid of memcpy. |
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29 | - tentatively use rep movsb on x86 and x86_64 (gcc only) for a |
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30 | moderate speed improvement. |
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31 | - applied patch by Kein-Hong Man to maske lzf.c compile under |
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32 | the crippled mingw32 environment. |
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33 | |
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34 | 2.0 Fri Feb 16 23:11:18 CET 2007 |
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35 | - replaced lzf demo by industrial-strength lzf utility with behaviour |
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36 | similar other compression utilities. Thanks for Stefan Traby for |
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37 | rewriting it! |
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38 | - fix state arg prototype. |
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39 | |
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40 | 1.7 Wed Sep 27 17:29:15 CEST 2006 |
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41 | - remove bogus "unlzf" patch. |
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42 | note to self: never accept well-meant patches. |
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43 | - make lzf more robust in presence of padding bytes or sudden eof. |
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44 | |
| 2 | 1.6 Fri Jul 7 17:31:26 CEST 2006 |
45 | 1.6 Fri Jul 7 17:31:26 CEST 2006 |
| 3 | - the lzf example utility will now uncompress if invoked |
46 | - the lzf example utility will now uncompress if invoked |
| 4 | as "unlzf" (patch by Scott Feeney). |
47 | as "unlzf" (patch by Scott Feeney). |
| 5 | - add CHECK_INPUT option that adds more checks for input |
48 | - add CHECK_INPUT option that adds more checks for input |
| 6 | data validity. |
49 | data validity. |
| 7 | - help applications that do not pass in the correct length |
50 | - help applications that do not pass in the correct length |
| 8 | (such as php) by returning either EINVAL or E2BIG. |
51 | (such as php) by returning either EINVAL or E2BIG. |
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52 | - default HLOG size is now 15 (cpu caches have increased). |
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53 | - documentation fixes. |
| 9 | |
54 | |
| 10 | 1.51 Thu Apr 14 22:15:46 CEST 2005 |
55 | 1.51 Thu Apr 14 22:15:46 CEST 2005 |
| 11 | - incorporated C♯ implementation of both the en- and decoder, |
56 | - incorporated C♯ implementation of both the en- and decoder, |
| 12 | written by "Oren J. Maurice <oymaurice@hazorea.org.il>". |
57 | written by "Oren J. Maurice <oymaurice@hazorea.org.il>". |
| 13 | You can find it in the cs/ subdirectory. |
58 | You can find it in the cs/ subdirectory. |
