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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 /* 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 * For conditions of distribution and use, see copyright notice in zlib.h
*/ */
@@ -35,15 +35,21 @@ typedef struct {
01000000 - invalid code 01000000 - invalid code
*/ */
/* Maximum size of dynamic tree. The maximum found in a long but non- /* Maximum size of the dynamic table. The maximum number of code structures is
exhaustive search was 1444 code structures (852 for length/literals 1446, which is the sum of 852 for literal/length codes and 594 for distance
and 592 for distances, the latter actually the result of an codes. These values were found by exhaustive searches using the program
exhaustive search). The true maximum is not known, but the value examples/enough.c found in the zlib distribtution. The arguments to that
below is more than safe. */ program are the number of symbols, the initial root table size, and the
#define ENOUGH 2048 maximum bit length of a code. "enough 286 9 15" for literal/length codes
#define MAXD 592 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 { typedef enum {
CODES, CODES,
LENS, LENS,

23
cpukit/zlib/inftrees.h
View File

@@ -35,15 +35,22 @@ typedef struct {
01000000 - invalid code 01000000 - invalid code
*/ */
/* Maximum size of dynamic tree. The maximum found in a long but non- /* Maximum size of the dynamic table. The maximum number of code structures is
exhaustive search was 1444 code structures (852 for length/literals 1444, which is the sum of 852 for literal/length codes and 592 for distance
and 592 for distances, the latter actually the result of an codes. These values were found by exhaustive searches using the program
exhaustive search). The true maximum is not known, but the value examples/enough.c found in the zlib distribtution. The arguments to that
below is more than safe. */ program are the number of symbols, the initial root table size, and the
#define ENOUGH 2048 maximum bit length of a code. "enough 286 9 15" for literal/length codes
#define MAXD 592 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 { typedef enum {
CODES, CODES,
LENS, LENS,