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authorDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 15:53:58 +0000
committerDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 15:53:58 +0000
commitb997e3524d81c0d4d4176d96acc5891d9c4a43f3 (patch)
treebb0fbc6e5cd421af8073acbb3e3a0a318e402c9b /doc/plzip.texi
parentAdding upstream version 1.4~pre1. (diff)
downloadplzip-b997e3524d81c0d4d4176d96acc5891d9c4a43f3.tar.xz
plzip-b997e3524d81c0d4d4176d96acc5891d9c4a43f3.zip
Adding upstream version 1.4~rc1.upstream/1.4_rc1
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
Diffstat (limited to 'doc/plzip.texi')
-rw-r--r--doc/plzip.texi21
1 files changed, 10 insertions, 11 deletions
diff --git a/doc/plzip.texi b/doc/plzip.texi
index 1c2d42c..b501b9a 100644
--- a/doc/plzip.texi
+++ b/doc/plzip.texi
@@ -6,8 +6,8 @@
@finalout
@c %**end of header
-@set UPDATED 25 February 2015
-@set VERSION 1.4-pre1
+@set UPDATED 23 May 2015
+@set VERSION 1.4-rc1
@dircategory Data Compression
@direntry
@@ -195,7 +195,7 @@ plzip [@var{options}] [@var{files}]
Plzip supports the following options:
-@table @samp
+@table @code
@item -h
@itemx --help
Print an informative help message describing the options and exit.
@@ -394,13 +394,12 @@ 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)
-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).@*
+The dictionary size is calculated by taking a power of 2 (the base size)
+and substracting from it a fraction between 0/16 and 7/16 of the base
+size.@*
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.@*
+Bits 7-5 contain the numerator of the fraction (0 to 7) to substract
+from the base size to obtain the dictionary size.@*
Example: 0xD3 = 2^19 - 6 * 2^15 = 512 KiB - 6 * 32 KiB = 320 KiB@*
Valid values for dictionary size range from 4 KiB to 512 MiB.
@@ -440,11 +439,11 @@ following:
@itemize @bullet
@item
For compression at level -0; 1.5 MiB plus 3 times the data size
-(@pxref{--data-size}).
+(@pxref{--data-size}). About 4.5 MiB.
@item
For compression at other levels; 11 times the dictionary size plus 3
-times the data size.
+times the data size. Default is 136 MiB.
@item
For decompression of a regular (seekable) file to another regular file,