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1zlib 0.71 is a beta version of a general purpose compression library.
2
3The data format used by the zlib library is described in the
4file zlib-3.1.doc, deflate-1.1.doc and gzip-4.1.doc, available
5in ftp.uu.net:/pub/archiving/zip/doc.
6
7All functions of the compression library are documented in the file
8zlib.h. A usage example of the library is given in the file example.c
9which also tests that the library is working correctly.
10To compile all files and run the test program, just type: make test
11
12The changes made in version 0.71 are documented in the file ChangeLog.
13The main changes since 0.5 are:
14- added full inflate support
15- added minigzip.c
16- added gzdopen to reopen a file descriptor as gzFile
17- added transparent reading of non-gziped files in gzread.
18- fix some MSDOS problems. example and minigzip now work on MSDOS.
19- Simplified the crc32() interface. The pre- and post-conditioning
20 (one's complement) is now done inside crc32(). WARNING: this is
21 incompatible with previous versions; see zlib.h for the new usage.
22
23On MSDOS, this version works in large and small model with MSC; in
24small model only with TurboC (bug being investigated). For both
25compilers, small model compression works only for small values of
26MEM_LEVEL and WBITS (see zutil.h), and requires -DUSE_CALLOC.
27
28
29 Copyright (C) 1995 Jean-loup Gailly and Mark Adler
30
31 This software is provided 'as-is', without any express or implied
32 warranty. In no event will the authors be held liable for any damages
33 arising from the use of this software.
34
35 Permission is granted to anyone to use this software for any purpose,
36 including commercial applications, and to alter it and redistribute it
37 freely, subject to the following restrictions:
38
39 1. The origin of this software must not be misrepresented; you must not
40 claim that you wrote the original software. If you use this software
41 in a product, an acknowledgment in the product documentation would be
42 appreciated but is not required.
43 2. Altered source versions must be plainly marked as such, and must not be
44 misrepresented as being the original software.
45 3. This notice may not be removed or altered from any source distribution.
46
47 Jean-loup Gailly Mark Adler
48 gzip@prep.ai.mit.edu madler@cco.caltech.edu
49
50If you use the zlib library in a product, we would appreciate *not*
51receiving lengthy legal documents to sign. The sources are provided
52for free but without warranty of any kind. The library has been
53entirely written by Jean-loup Gailly and Mark Adler; it does not
54include third-party code.
55
56If you redistribute modified sources, we would appreciate that you include
57in the file ChangeLog history information documenting your changes.