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 Readme for:  Utility » Archive » xpklz40.lha

XpkLZ40

Description: XPK sublib with very fast (de)compression
Download: xpklz40.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 26kb
Version: 1.1
Date: 14 Oct 2014
Author: Chris Young
Submitter: uploader
Homepage: http://www.unsatisfactorysoftware.co.uk/
Requirements: AmigaOS4
Category: utility/archive
License: Other
Distribute: yes
Min OS Version: 4.0
FileID: 9005
 
Comments: 0
Snapshots: 0
Videos: 0
Downloads: 235  (Current version)
235  (Accumulated)
Votes: 1 (0/0)  (30 days/7 days)

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xpkLZ40.library is an XPK packer based on lz4.library (the extra "0"
is just to pad out the ID to the required four characters).

LZ4 is an extremely fast LZ77-style packer with reasonable compression.
This library should be used when packing pseed is more important than
compression ratio.

Example benchmarks against some other popular OS4 native sub-libs:
File 'NetSurf' with a size of 14753427 bytes.
Type  Num Version P    CSize     CTime      CSpd     UTime      USpd  Rate
LZ40: 100  1.1       7890908      0.03 491780900      0.06 245890450  75.7
L2XZ:  79  1.1       3060340      7.05   2092684      2.05   7196793  79.3
LZMA: 100 52.2       3203636      2.02   7303676      1.06  13918327  78.3
BZP2: 100  1.7       4696200      6.01   2454813      1.05  14050882  97.3
GZIP: 100 50.4       5359276      4.01   3679158      0.06 245890450  92.8


NB: This sub-library has undergone very limited testing so far.
    Please ensure it works for you!

DISCLAIMER
==========

No warranty is expessed nor implied for this software.  If you compress data
using it, there is no guarantee it will be uncompressible in future.  Please
keep an uncompressed copy of any data you care about.  The author will not
take responsibility for any loss of data due to direct or indirect use of
this software.  If you don't agree to these terms, you must delete the
archive without installing it.

Copyright (c) 2004-2018 by Björn Hagström All Rights Reserved