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version 1.1, 2012/02/17 15:09:30	version 1.1.1.2, 2013/10/14 07:51:14
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ZLIB DATA COMPRESSION LIBRARY	ZLIB DATA COMPRESSION LIBRARY

zlib 1.2.3 is a general purpose data compression library. All the code is	zlib 1.2.8 is a general purpose data compression library. All the code is
thread safe. The data format used by the zlib library is described by RFCs	thread safe. The data format used by the zlib library is described by RFCs
(Request for Comments) 1950 to 1952 in the files	(Request for Comments) 1950 to 1952 in the files
http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)	http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
and rfc1952.txt (gzip format). These documents are also available in other	rfc1952 (gzip format).
formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html

All functions of the compression library are documented in the file zlib.h	All functions of the compression library are documented in the file zlib.h
(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example	(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
of the library is given in the file example.c which also tests that the library	of the library is given in the file test/example.c which also tests that
is working correctly. Another example is given in the file minigzip.c. The	the library is working correctly. Another example is given in the file
compression library itself is composed of all source files except example.c and	test/minigzip.c. The compression library itself is composed of all source
minigzip.c.	files in the root directory.

To compile all files and run the test program, follow the instructions given at	To compile all files and run the test program, follow the instructions given at
the top of Makefile. In short "make test; make install" should work for most	the top of Makefile.in. In short "./configure; make test", and if that goes
machines. For Unix: "./configure; make test; make install". For MSDOS, use one	well, "make install" should work for most flavors of Unix. For Windows, use
of the special makefiles such as Makefile.msc. For VMS, use make_vms.com.	one of the special makefiles in win32/ or contrib/vstudio/ . For VMS, use
	make_vms.com.

Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant	Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
<info@winimage.com> for the Windows DLL version. The zlib home page is	<info@winimage.com> for the Windows DLL version. The zlib home page is
http://www.zlib.org or http://www.gzip.org/zlib/ Before reporting a problem,	http://zlib.net/ . Before reporting a problem, please check this site to
please check this site to verify that you have the latest version of zlib;	verify that you have the latest version of zlib; otherwise get the latest
otherwise get the latest version and check whether the problem still exists or	version and check whether the problem still exists or not.
not.

PLEASE read the zlib FAQ http://www.gzip.org/zlib/zlib_faq.html before asking	PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help.
for help.

Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997	Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
issue of Dr. Dobb's Journal; a copy of the article is available in	issue of Dr. Dobb's Journal; a copy of the article is available at
http://dogma.net/markn/articles/zlibtool/zlibtool.htm	http://marknelson.us/1997/01/01/zlib-engine/ .

The changes made in version 1.2.3 are documented in the file ChangeLog.	The changes made in version 1.2.8 are documented in the file ChangeLog.

Unsupported third party contributions are provided in directory "contrib".	Unsupported third party contributions are provided in directory contrib/ .

A Java implementation of zlib is available in the Java Development Kit	zlib is available in Java using the java.util.zip package, documented at
http://java.sun.com/j2se/1.4.2/docs/api/java/util/zip/package-summary.html	http://java.sun.com/developer/technicalArticles/Programming/compression/ .
See the zlib home page http://www.zlib.org for details.

A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is in the	A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available
CPAN (Comprehensive Perl Archive Network) sites	at CPAN (Comprehensive Perl Archive Network) sites, including
http://www.cpan.org/modules/by-module/Compress/	http://search.cpan.org/~pmqs/IO-Compress-Zlib/ .

A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is	A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
available in Python 1.5 and later versions, see	available in Python 1.5 and later versions, see
http://www.python.org/doc/lib/module-zlib.html	http://docs.python.org/library/zlib.html .

A zlib binding for TCL written by Andreas Kupries <a.kupries@westend.com> is	zlib is built into tcl: http://wiki.tcl.tk/4610 .
availlable at http://www.oche.de/~akupries/soft/trf/trf_zip.html

An experimental package to read and write files in .zip format, written on top	An experimental package to read and write files in .zip format, written on top
of zlib by Gilles Vollant <info@winimage.com>, is available in the	of zlib by Gilles Vollant <info@winimage.com>, is available in the
Line 74 Notes for some targets:	Line 70 Notes for some targets:
- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with	- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
other compilers. Use "make test" to check your compiler.	other compilers. Use "make test" to check your compiler.

- gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.	- gzdopen is not supported on RISCOS or BEOS.

- For PalmOs, see http://palmzlib.sourceforge.net/	- For PalmOs, see http://palmzlib.sourceforge.net/

- When building a shared, i.e. dynamic library on Mac OS X, the library must be
installed before testing (do "make install" before "make test"), since the
library location is specified in the library.


Acknowledgments:	Acknowledgments:

The deflate format used by zlib was defined by Phil Katz. The deflate	The deflate format used by zlib was defined by Phil Katz. The deflate and
and zlib specifications were written by L. Peter Deutsch. Thanks to all the	zlib specifications were written by L. Peter Deutsch. Thanks to all the
people who reported problems and suggested various improvements in zlib;	people who reported problems and suggested various improvements in zlib; they
they are too numerous to cite here.	are too numerous to cite here.

Copyright notice:	Copyright notice:

(C) 1995-2004 Jean-loup Gailly and Mark Adler	(C) 1995-2013 Jean-loup Gailly and Mark Adler

This software is provided 'as-is', without any express or implied	This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages	warranty. In no event will the authors be held liable for any damages
Line 113 Copyright notice:	Line 105 Copyright notice:
Jean-loup Gailly Mark Adler	Jean-loup Gailly Mark Adler
jloup@gzip.org madler@alumni.caltech.edu	jloup@gzip.org madler@alumni.caltech.edu

If you use the zlib library in a product, we would appreciate not	If you use the zlib library in a product, we would appreciate not receiving
receiving lengthy legal documents to sign. The sources are provided	lengthy legal documents to sign. The sources are provided for free but without
for free but without warranty of any kind. The library has been	warranty of any kind. The library has been entirely written by Jean-loup
entirely written by Jean-loup Gailly and Mark Adler; it does not	Gailly and Mark Adler; it does not include third-party code.
include third-party code.

If you redistribute modified sources, we would appreciate that you include	If you redistribute modified sources, we would appreciate that you include in
in the file ChangeLog history information documenting your changes. Please	the file ChangeLog history information documenting your changes. Please read
read the FAQ for more information on the distribution of modified source	the FAQ for more information on the distribution of modified source versions.
versions.

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