mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-28 08:12:28 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Remove more nonstandard stuff from cosmopolitan.h

Browse source 
Fixes #61
This commit is contained in:
Justine Tunney 2021-02-28 23:42:35 -08:00
parent 5e069a64d4
commit d932948fb4
954 changed files with 1095 additions and 1342 deletions
Download patch file Download diff file Expand all files Collapse all files

66
third_party/zlib/inftrees.internal.h vendored Normal file
View file

@ -0,0 +1,66 @@
#ifndef COSMOPOLITAN_THIRD_PARTY_ZLIB_INFTREES_H_
#define COSMOPOLITAN_THIRD_PARTY_ZLIB_INFTREES_H_
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* 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)
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
/* Structure for decoding tables. Each entry provides either the
information needed to do the operation requested by the code that
indexed that table entry, or it provides a pointer to another
table that indexes more bits of the code. op indicates whether
the entry is a pointer to another table, a literal, a length or
distance, an end-of-block, or an invalid code. For a table
pointer, the low four bits of op is the number of index bits of
that table. For a length or distance, the low four bits of op
is the number of extra bits to get after the code. bits is
the number of bits in this code or part of the code to drop off
of the bit buffer. val is the actual byte to output in the case
of a literal, the base length or distance, or the offset from
the current table to the next table. Each entry is four bytes. */
struct zcode {
unsigned char op; /* operation, extra bits, table bits */
unsigned char bits; /* bits in this part of the code */
unsigned short val; /* offset in table or code value */
};
extern const struct zcode kZlibLenfix[512] hidden;
extern const struct zcode kZlibDistfix[32] hidden;
/* op values as set by inflate_table():
00000000 - literal
0000tttt - table link, tttt != 0 is the number of table index bits
0001eeee - length or distance, eeee is the number of extra bits
01100000 - end of block
01000000 - invalid code
*/
/* Type of code to build for inflate_table() */
typedef enum { CODES, LENS, DISTS } zcodetype;
int inflate_table(zcodetype type, unsigned short *lens, unsigned codes,
struct zcode **table, unsigned *bits,
unsigned short *work) hidden;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_THIRD_PARTY_ZLIB_INFTREES_H_ */