Good morning, all. It's 4 degrees and dead calm here in greater
ChicagoLand, aka The Kingdom of Daley.
Could someone point me to a fairly readable description of the LZW
compression algorithm?
I'm planning to unbutton ARCHIVER (CBT File 147) and will be considering
the replacement of the current Huffman tree compression with LZW, if I
can code it to be more efficient in Assembler. I've been told by several
users that while the compression seems fairly quick, the "uncompression"
seems to be rather CPU intensive. Before anyone goes looking, please
remember that I wrote that code years ago, under MVS SP1.3. I've also
found that some load module records grow, rather than shrink, when I
apply the Huffman compression technique to them, resulting in ABENDs.
For those that use ARCHIVER, the transition will be transperant; There
are some flag fields that I can use for decision making in existing
ARCHIVE records.
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