A massively spiffy yet delicately unobtrusive compression library.
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zlib 0.94 is a beta version of a general purpose compression library. Unless new bugs are found it will be released again as the first official version (1.0). This version has no known bugs. The data format used by the zlib library is described in the files zlib-3.1.doc, deflate-1.1.doc and gzip-4.1.doc, available in ftp.uu.net:/pub/archiving/zip/doc. All functions of the compression library are documented in the file zlib.h. A usage example of the library is given in the file example.c which also tests that the library is working correctly. To compile all files and run the test program, just type: make test (For MSDOS, use one of the special makefiles such as Makefile.msc.) To install the zlib library (libz.a) in /usr/local/lib, type: make install To install in a different directory, use for example: make install prefix=$HOME This will install in $HOME/lib instead of /usr/local/lib. The changes made in version 0.94 are documented in the file ChangeLog. The main changes since 0.93 are: - support MSDOS small and medium model - fix deflate with flush (could sometimes generate bad output) - fix deflateReset (zlib header was incorrectly suppressed) - added support for VMS - allow a compression level in gzopen() - gzflush now calls fflush - For deflate with flush, flush even if no more input is provided. - rename libgz.a as libz.a For MSDOS, the small and medium models are supported only for Microsoft C. (It should be easy to support them for Borland C also, but I don't have a recent Borland compiler to test with.) The small model currently works for Turbo/Borland C but only with reduced performance to avoid any far allocation (tested with -DMAX_WBITS=11 -DDEF_WBITS=11 -DMAX_MEM_LEVEL=3). (C) 1995 Jean-loup Gailly and Mark Adler This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. Jean-loup Gailly Mark Adler firstname.lastname@example.org email@example.com If you use the zlib library in a product, we would appreciate *not* receiving lengthy legal documents to sign. The sources are provided for free but without warranty of any kind. The library has been entirely written by Jean-loup Gailly and Mark Adler; it does not include third-party code. If you redistribute modified sources, we would appreciate that you include in the file ChangeLog history information documenting your changes.