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Diffstat (limited to 'doc/plzip.info')
| -rw-r--r-- | doc/plzip.info | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/doc/plzip.info b/doc/plzip.info index e8bfe0d..d07ba9e 100644 --- a/doc/plzip.info +++ b/doc/plzip.info @@ -11,7 +11,7 @@ File: plzip.info, Node: Top, Next: Introduction, Up: (dir) Plzip Manual ************ -This manual is for Plzip (version 1.4-pre1, 25 February 2015). +This manual is for Plzip (version 1.4-rc1, 23 May 2015). * Menu: @@ -361,14 +361,12 @@ additional information before, between, or after them. now. '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. @@ -400,10 +398,10 @@ The amount of memory required *per thread* is approximately the following: * For compression at level -0; 1.5 MiB plus 3 times the data size - (*note --data-size::). + (*note --data-size::). About 4.5 MiB. * For compression at other levels; 11 times the dictionary size plus - 3 times the data size. + 3 times the data size. Default is 136 MiB. * For decompression of a regular (seekable) file to another regular file, or for testing of a regular file; the dictionary size. Note @@ -495,15 +493,15 @@ Concept index Tag Table: Node: Top221 -Node: Introduction994 -Node: Program design5291 -Node: Invoking plzip6880 -Ref: --data-size7294 -Node: File format12518 -Node: Memory requirements15061 -Node: Minimum file sizes16130 -Node: Problems18052 -Node: Concept index18588 +Node: Introduction988 +Node: Program design5285 +Node: Invoking plzip6874 +Ref: --data-size7288 +Node: File format12512 +Node: Memory requirements14925 +Node: Minimum file sizes16029 +Node: Problems17951 +Node: Concept index18487 End Tag Table |