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| author | Daniel Baumann <mail@daniel-baumann.ch> | 2015-11-07 13:48:27 +0000 |
|---|---|---|
| committer | Daniel Baumann <mail@daniel-baumann.ch> | 2015-11-07 13:48:27 +0000 |
| commit | 4da07136ac4461ad1ba6113f5772e2c0a6468b49 (patch) | |
| tree | ce21d421f4b44db833a4f4d48c6ef5310f6fa1bc /doc/lzlib.texinfo | |
| parent | Adding debian version 1.4~rc2-1. (diff) | |
| download | lzlib-4da07136ac4461ad1ba6113f5772e2c0a6468b49.tar.xz lzlib-4da07136ac4461ad1ba6113f5772e2c0a6468b49.zip | |
Merging upstream version 1.4.
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
Diffstat (limited to 'doc/lzlib.texinfo')
| -rw-r--r-- | doc/lzlib.texinfo | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/doc/lzlib.texinfo b/doc/lzlib.texinfo index eeae174..c08303e 100644 --- a/doc/lzlib.texinfo +++ b/doc/lzlib.texinfo @@ -6,8 +6,8 @@ @finalout @c %**end of header -@set UPDATED 7 February 2013 -@set VERSION 1.4-rc2 +@set UPDATED 28 May 2013 +@set VERSION 1.4 @dircategory Data Compression @direntry @@ -600,15 +600,19 @@ A four byte string, identifying the lzip format, with the value "LZIP". Just in case something needs to be modified in the future. 1 for now. @item DS (coded dictionary size, 1 byte) -Bits 4-0 contain the base 2 logarithm of the base dictionary size.@* -Bits 7-5 contain the number of "wedges" to substract from the base -dictionary size to obtain the dictionary size. The size of a wedge is -(base dictionary size / 16).@* +Lzip divides the distance between any two powers of 2 into 8 equally +spaced intervals, named "wedges". The dictionary size is calculated by +taking a power of 2 (the base size) and substracting from it a number of +wedges between 0 and 7. The size of a wedge is (base_size / 16).@* +Bits 4-0 contain the base 2 logarithm of the base size (12 to 29).@* +Bits 7-5 contain the number of wedges (0 to 7) to substract from the +base size to obtain the dictionary size.@* +Example: 0xD3 = (2^19 - 6 * 2^15) = (512KiB - 6 * 32KiB) = 320KiB@* Valid values for dictionary size range from 4KiB to 512MiB. @item Lzma stream The lzma stream, finished by an end of stream marker. Uses default values -for encoder properties. +for encoder properties. See the lzip manual for a full description. @item CRC32 (4 bytes) CRC of the uncompressed original data. @@ -618,8 +622,8 @@ Size of the uncompressed original data. @item Member size (8 bytes) Total size of the member, including header and trailer. This field acts -as a distributed index, and facilitates safe recovery of undamaged -members from multi-member files. +as a distributed index, allows the verification of stream integrity, and +facilitates safe recovery of undamaged members from multi-member files. @end table |