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author | delphij <delphij@FreeBSD.org> | 2010-03-22 21:11:55 +0000 |
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committer | delphij <delphij@FreeBSD.org> | 2010-03-22 21:11:55 +0000 |
commit | 242fa9b7553b2ba79e6c24d9c970b87803969664 (patch) | |
tree | 1bab41b7473c7f820d5017fd4e0f8b6bccf0fdd3 /lib/libz/inftrees.h | |
parent | a40c3ddf5af024b9de0a6be58ebdc15e29974cd0 (diff) | |
parent | f956321dcebbe74ca501db23263b30d1c3443b77 (diff) | |
download | FreeBSD-src-242fa9b7553b2ba79e6c24d9c970b87803969664.zip FreeBSD-src-242fa9b7553b2ba79e6c24d9c970b87803969664.tar.gz |
Update to zlib 1.2.4 and add versioned symbols to the
library.
Sponsored by: iXsystems, Inc.
Diffstat (limited to 'lib/libz/inftrees.h')
-rw-r--r-- | lib/libz/inftrees.h | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/lib/libz/inftrees.h b/lib/libz/inftrees.h index b1104c8..67461da 100644 --- a/lib/libz/inftrees.h +++ b/lib/libz/inftrees.h @@ -35,15 +35,22 @@ typedef struct { 01000000 - invalid code */ -/* Maximum size of dynamic tree. The maximum found in a long but non- - exhaustive search was 1444 code structures (852 for length/literals - and 592 for distances, the latter actually the result of an - exhaustive search). The true maximum is not known, but the value - below is more than safe. */ -#define ENOUGH 2048 -#define MAXD 592 +/* Maximum size of the dynamic table. The maximum number of code structures is + 1444, which is the sum of 852 for literal/length codes and 592 for distance + codes. These values were found by exhaustive searches using the program + examples/enough.c found in the zlib distribtution. The arguments to that + program are the number of symbols, the initial root table size, and the + maximum bit length of a code. "enough 286 9 15" for literal/length codes + returns returns 852, and "enough 30 6 15" for distance codes returns 592. + The initial root table size (9 or 6) is found in the fifth argument of the + inflate_table() calls in inflate.c and infback.c. If the root table size is + changed, then these maximum sizes would be need to be recalculated and + updated. */ +#define ENOUGH_LENS 852 +#define ENOUGH_DISTS 592 +#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS) -/* Type of code to build for inftable() */ +/* Type of code to build for inflate_table() */ typedef enum { CODES, LENS, |