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minor compression level corrections

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Yann Collet
2016-07-17 16:21:37 +02:00
parent d54b2d23b4
commit e557fd5e92
5 changed files with 10 additions and 11 deletions
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zstd_compression_format.md
+6 -8
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@@ -16,7 +16,7 @@ Distribution of this document is unlimited.
### Version
0.1.1 (15/07/16)
0.1.2 (15/07/16)
Introduction
@@ -518,11 +518,8 @@ using the fewest bits of any possible prefix codes for that alphabet.
Prefix code must not exceed a maximum code length.
More bits improve accuracy but cost more header size,
and require more memory for decoding operations.
The current format limits the maximum depth to 15 bits.
The reference decoder goes further, by limiting it to 12 bits.
It is recommended to remain compatible with reference decoder.
and require more memory or more complex decoding operations.
This specification limits maximum code length to 11 bits.
##### Representation
@@ -1168,5 +1165,6 @@ __Content__ : Where the actual dictionary content is.
Version changes
---------------
- 0.1.1 reserved dictID ranges
- 0.1.0 initial release
- 0.1.2 : limit huffman tree depth to 11 bits
- 0.1.1 : reserved dictID ranges
- 0.1.0 : initial release