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zlib 0.91

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Mark Adler
2011-09-09 23:07:35 -07:00
parent 64b2e89203
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README
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zlib 0.9 is a beta version of a general purpose compression library.
zlib 0.91 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
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
The changes made in version 0.9 are documented in the file ChangeLog.
The main changes since 0.8 are:
- don't assume that zalloc clears the allocated memory
- let again gzread copy uncompressed data unchanged (was working in 0.71)
- deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented
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 (libgz.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 0.91 are documented in the file ChangeLog.
The main changes since 0.9 are:
- Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h
- Document the memory requirements in zconf.h
- added "make install"
- added support for DJGPP
On MSDOS, this version works in both large and small model. However
small model compression works only for small values of MEM_LEVEL and
WBITS (see zutil.h). Small model decompression should work up to WBITS=15.
This version of zlib does not support small or medium model with far
allocation of big objects.
small model compression works only for small values of MAX_MEM_LEVEL
and MAX_WBITS (see zconf.h). Small model decompression should work up
to MAX_WBITS=15. This version of zlib does not support small or
medium model with far allocation of big objects.
Copyright (C) 1995 Jean-loup Gailly and Mark Adler