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Import from zlib-1.2.4

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This commit is contained in:
Ralf Corsepius
2011-03-18 10:11:05 +00:00
parent f369a5097f
commit 676506f35f
2 changed files with 30 additions and 17 deletions
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24
cpukit/zlib/contrib/infback9/inftree9.h
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@@ -1,5 +1,5 @@
/* inftree9.h -- header to use inftree9.c
* Copyright (C) 1995-2003 Mark Adler
* Copyright (C) 1995-2008 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@@ -35,15 +35,21 @@ 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
1446, which is the sum of 852 for literal/length codes and 594 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 32 6 15" for distance codes returns 594.
The initial root table size (9 or 6) is found in the fifth argument of the
inflate_table() calls in infback9.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 594
#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
/* Type of code to build for inftable() */
/* Type of code to build for inflate_table9() */
typedef enum {
CODES,
LENS,

23
cpukit/zlib/inftrees.h
View File

@@ -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,