Mercurial > hg > CbC > CbC_gcc
comparison zlib/contrib/infback9/inftree9.h @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | ae3a4bfb450b |
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68:561a7518be6b | 111:04ced10e8804 |
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1 /* inftree9.h -- header to use inftree9.c | 1 /* inftree9.h -- header to use inftree9.c |
2 * Copyright (C) 1995-2003 Mark Adler | 2 * Copyright (C) 1995-2008 Mark Adler |
3 * For conditions of distribution and use, see copyright notice in zlib.h | 3 * For conditions of distribution and use, see copyright notice in zlib.h |
4 */ | 4 */ |
5 | 5 |
6 /* WARNING: this file should *not* be used by applications. It is | 6 /* WARNING: this file should *not* be used by applications. It is |
7 part of the implementation of the compression library and is | 7 part of the implementation of the compression library and is |
33 100eeeee - length or distance, eeee is the number of extra bits | 33 100eeeee - length or distance, eeee is the number of extra bits |
34 01100000 - end of block | 34 01100000 - end of block |
35 01000000 - invalid code | 35 01000000 - invalid code |
36 */ | 36 */ |
37 | 37 |
38 /* Maximum size of dynamic tree. The maximum found in a long but non- | 38 /* Maximum size of the dynamic table. The maximum number of code structures is |
39 exhaustive search was 1444 code structures (852 for length/literals | 39 1446, which is the sum of 852 for literal/length codes and 594 for distance |
40 and 592 for distances, the latter actually the result of an | 40 codes. These values were found by exhaustive searches using the program |
41 exhaustive search). The true maximum is not known, but the value | 41 examples/enough.c found in the zlib distribtution. The arguments to that |
42 below is more than safe. */ | 42 program are the number of symbols, the initial root table size, and the |
43 #define ENOUGH 2048 | 43 maximum bit length of a code. "enough 286 9 15" for literal/length codes |
44 #define MAXD 592 | 44 returns returns 852, and "enough 32 6 15" for distance codes returns 594. |
45 The initial root table size (9 or 6) is found in the fifth argument of the | |
46 inflate_table() calls in infback9.c. If the root table size is changed, | |
47 then these maximum sizes would be need to be recalculated and updated. */ | |
48 #define ENOUGH_LENS 852 | |
49 #define ENOUGH_DISTS 594 | |
50 #define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS) | |
45 | 51 |
46 /* Type of code to build for inftable() */ | 52 /* Type of code to build for inflate_table9() */ |
47 typedef enum { | 53 typedef enum { |
48 CODES, | 54 CODES, |
49 LENS, | 55 LENS, |
50 DISTS | 56 DISTS |
51 } codetype; | 57 } codetype; |