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zlib 0.71 is a beta version of a general purpose compression library.
The data format used by the zlib library is described in the
file 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
The changes made in version 0.71 are documented in the file ChangeLog.
The main changes since 0.5 are:
- added full inflate support
- added minigzip.c
- added gzdopen to reopen a file descriptor as gzFile
- added transparent reading of non-gziped files in gzread.
- fix some MSDOS problems. example and minigzip now work on MSDOS.
- Simplified the crc32() interface. The pre- and post-conditioning
(one's complement) is now done inside crc32(). WARNING: this is
incompatible with previous versions; see zlib.h for the new usage.
On MSDOS, this version works in large and small model with MSC; in
small model only with TurboC (bug being investigated). For both
compilers, small model compression works only for small values of
MEM_LEVEL and WBITS (see zutil.h), and requires -DUSE_CALLOC.
Copyright (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
gzip@prep.ai.mit.edu madler@cco.caltech.edu
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.
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