These classes provide a C++ stream interface to the zlib library. It allows youto do things like:  gzofstream outf("blah.gz");  outf << "These go into the gzip file " << 123 << endl;It does this by deriving a specialized stream buffer for gzipped files, which isthe way Stroustrup would have done it. :->The gzifstream and gzofstream classes were originally written by Kevin Rulandand made available in the zlib contrib/iostream directory. The older version stillcompiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development ofthis version.The new classes are as standard-compliant as possible, closely following theapproach of the standard library's fstream classes. It compiles under gcc versions3.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standardlibrary naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differsfrom the previous one in the following respects:- added showmanyc- added setbuf, with support for unbuffered output via setbuf(0,0)- a few bug fixes of stream behavior- gzipped output file opened with default compression level instead of maximum level- setcompressionlevel()/strategy() members replaced by single setcompression()The code is provided "as is", with the permission to use, copy, modify, distributeand sell it for any purpose without fee.Ludwig Schwardt<schwardt@sun.ac.za>DSP LabElectrical & Electronic Engineering DepartmentUniversity of StellenboschSouth Africa