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74 Commits

Author SHA1 Message Date
Mark Adler 545f194963 Add old gcc ULONG_LONG_MAX macro to find a 64-bit type in zutil.h. 2024-07-31 22:33:12 -07:00
Mark Adler 5c42a230b7 Correct argument types for 64-bit combine functions. 2024-02-11 15:42:08 -08:00
Cameron Cawley 4de0b054a5 Improve portability to RISC OS. 2024-01-23 06:27:49 -08:00
Mark Adler 51b7f2abda zlib 1.3.1 2024-01-22 10:32:37 -08:00
Mark Adler 4bd9a71f35 Remove fdopen #defines in zutil.h. 
fdopen() is not used by zlib anymore. The #defines are vestigial.
 2024-01-13 22:30:30 -08:00
Mark Adler 431a9b65ea Add bounds checking to ERR_MSG() macro, used by zError(). 2024-01-13 22:29:58 -08:00
Mark Adler e9d5486e66 Remove K&R function definitions from zlib. 
C2X has removed K&R definitions from the C function syntax.
Though the standard has not yet been approved, some high-profile
compilers are now issuing warnings when such definitions are
encountered.
 2023-04-15 21:17:31 -07:00
Mark Adler 888b3da8de Provide missing function prototypes in CRC-32 code. [fredgan] 2022-10-06 20:43:18 -07:00
Mark Adler 21767c654d zlib 1.2.12 2022-03-27 16:05:02 -07:00
Mark Adler 735eaa1ebd Eliminate use of ULL constants. 
0xffffffffffffffffULL was causing warnings for C99 usage. The
suffix for the constant is not necessary anyway, so this commit
removes them.
 2022-03-27 01:54:17 -07:00
Mark Adler f8719f5ae5 Speed up software CRC-32 computation by a factor of 1.5 to 3. 
Use the interleaved method of Kadatch and Jenkins in order to make
use of pipelined instructions through multiple ALUs in a single
core. This also speeds up and simplifies the combination of CRCs,
and updates the functions to pre-calculate and use an operator for
CRC combination.
 2018-12-26 12:26:52 -08:00
Mark Adler 3c46f5ddb5 Avoid the use of ptrdiff_t. 
This isn't the right type anyway to assure that it contains a
pointer. That type would be intptr_t or uintptr_t. However the C99
standard says that those types are optional, so their use would not
be portable. This commit simply uses size_t or whatever configure
decided to use for size_t. That would be the same length as
ptrdiff_t, and so will work just as well. The code checks to see if
the length of the type used is the same as the length of a void
pointer, so there is already protection against the use of the
wrong type. The use of size_t (or ptrdiff_t) will almost always
work, as all modern architectures have an array size that is the
same as the pointer size. Only old segmented architectures would
have to fall back to the slower CRC-32 calculation, where the
amount of memory that can be accessed is larger than the maximum
array size.
 2017-06-03 09:53:33 -07:00
Mark Adler 2fa463bacf zlib 1.2.9 2016-12-31 23:37:10 -08:00
Mark Adler bedea2483b Clean up and comment the use of local for static. 2016-10-26 10:25:10 -07:00
Mark Adler ce12c5cd00 Make a noble effort at setting OS_CODE correctly. 
This updates the OS_CODE determination at compile time to match as
closely as possible the operating system mappings documented in
the PKWare APPNOTE.TXT version 6.3.4, section 4.4.2.2. That byte
in the gzip header is used by nobody for anything, as far as I can
tell. However we might as well try to set it appropriately.
 2016-10-25 20:45:41 -07:00
Mark Adler 51a223def4 Avoid use of DEBUG macro -- change to ZLIB_DEBUG. 2015-07-28 22:44:31 -07:00
Mark Adler 0b16609409 zlib 1.2.7.1 2013-03-24 22:47:59 -07:00
Mark Adler f81b79c559 Line length cleanup. 2013-03-24 22:30:40 -07:00
Mark Adler 62d6112a79 Clean up the usage of z_const and respect const usage within zlib. 
This patch allows zlib to compile cleanly with the -Wcast-qual gcc
warning enabled, but only if ZLIB_CONST is defined, which adds
const to next_in and msg in z_stream and in the in_func prototype.
A --const option is added to ./configure which adds -DZLIB_CONST
to the compile flags, and adds -Wcast-qual to the compile flags
when ZLIBGCCWARN is set in the environment.
 2012-08-13 00:02:40 -07:00
Mark Adler dab7531ecc Simplify test and use of gcc hidden attribute. 2012-03-03 00:20:00 -08:00
Mark Adler 2547c6c81f Don't use library or built-in byte swaps. 
Using optimized byte swaps reduced portability for no real benefit,
since they are in parts of the code that represent a tiny fraction
of the execution time.  So a simple definition of a byte swap is
now used.
 2012-03-03 00:03:30 -08:00
Mark Adler 3f4339b61b Improve the detection of no hidden visibility attribute. 2012-02-19 23:33:10 -08:00
Mark Adler e6d2a8471b Do not use the visibility attribute if NO_VIZ defined. 2012-02-19 22:45:10 -08:00
Mark Adler a75d6ea070 Require gcc 4.0 or later on Mac OS X to use the hidden attribute. 2012-02-18 15:37:28 -08:00
Mark Adler eee7b9e576 Remove unnecessary include for byte swap built-in [Bosmans]. 2012-02-13 23:03:36 -08:00
Mark Adler 5bbdc122ad Don't use built-in byte swaps if compiled solo. 2012-02-12 19:28:06 -08:00
Mark Adler 94acb3c1a0 zlib 1.2.6.1 2012-02-12 14:20:33 -08:00
Mark Adler 7d45cf5a1d Use optimized byte swap operations for Microsoft and GNU [Snyder]. 2012-02-11 00:26:38 -08:00
Mark Adler fe61dfb8a2 zlib 1.2.5.2 2011-12-18 10:39:45 -08:00
Mark Adler 15b5671b78 Facilitate compilation with Borland C++ for pragmas and vsnprintf. 2011-11-19 13:53:26 -08:00
Mark Adler f442c1e89e Add a ./config --solo option to make zlib subset with no libary use 
A common request has been the ability to compile zlib to require no
other libraries.  This --solo option provides that ability.  The price
is that the gz*, compress*, and uncompress functions are eliminated,
and that the user must provide memory allocation and free routines to
deflate and inflate when initializing.
 2011-10-07 02:11:56 -07:00
Mark Adler 00c836e325 Merge vestigial vsnprintf determination from zutil.h to gzguts.h. 
This also moves some of the same from zconf.h to gzguts.h. A new
function, gzflags(), was created to pass the compilation flags
related to vsnprintf usage back to zlibCompileFlags() in zutil.c.
In the process, various compiler configuration files were updated
to include gzflags(), as well as the new gzgetc_() function added
when the gzgetc() macro was introduced in a previous patch.
 2011-10-02 11:15:00 -07:00
Tor Lillqvist 7142fcfeed Always add large file support for windows 2011-10-01 10:02:09 -07:00
Mark Adler 7301420248 zlib 1.2.4.5 2011-09-09 23:34:55 -07:00
Mark Adler f4498bea28 zlib 1.2.4.3 2011-09-09 23:34:38 -07:00
Mark Adler 7147f24cd7 zlib 1.2.4.2 2011-09-09 23:34:30 -07:00
Mark Adler 05d47d2627 zlib 1.2.4.1 2011-09-09 23:34:22 -07:00
Mark Adler a1141160bc zlib 1.2.4 2011-09-09 23:33:59 -07:00
Mark Adler dc5a43ebfa zlib 1.2.3.6 2011-09-09 23:26:58 -07:00
Mark Adler d004b04783 zlib 1.2.3.5 2011-09-09 23:26:49 -07:00
Mark Adler f6194ef39a zlib 1.2.3.4 2011-09-09 23:26:40 -07:00
Mark Adler 639be99788 zlib 1.2.3.3 2011-09-09 23:26:29 -07:00
Mark Adler d6231142d2 zlib 1.2.3.2 2011-09-09 23:25:38 -07:00
Mark Adler b1c19ca6d8 zlib 1.2.3.1 2011-09-09 23:25:27 -07:00
Mark Adler 9c3a583021 zlib 1.2.2.4 2011-09-09 23:24:52 -07:00
Mark Adler 6b8233bfe0 zlib 1.2.2.3 2011-09-09 23:24:43 -07:00
Mark Adler 0484693e17 zlib 1.2.2.2 2011-09-09 23:24:33 -07:00
Mark Adler 9811b53dd9 zlib 1.2.2.1 2011-09-09 23:24:24 -07:00
Mark Adler 7a6955760b zlib 1.2.1.2 2011-09-09 23:23:45 -07:00
Mark Adler 7a33a861d1 zlib 1.2.1 2011-09-09 23:23:27 -07:00