(doc-group compress
  «Compression.»)

(defdoc (lz-pack data (level 0))
  «Return data compressed using Lempel-Ziv.

   The data must be an array, returned value will have the same type.
   The optional `level` is between `0` and `10`.  With `level` set to
   `0` a simple LZSS using hashing will be performed.  Levels between
   `1` and `9` offer a trade-off between time/space and ratio.  Level
   `10` is optimal but very slow.»
  :doc-group compress)

(defdoc (lz-unpack data :to destination))
(defdoc (lz-unpack data :size decompressed-bytes)
  «Return decompressed data previously compressed using Lempel-Ziv.

   Either destination for the decompressed data or the expected size of
   the decompressed data must be specified.  In the latter case a new
   array is allocated.»
  :doc-group compress)