Zlib:Константы и макросы

Allowed flush values; see deflate and inflate below for details. Return codes for the compression/decompression functions. Negative values are errors, positive values are used for special but normal events. Compression levels. Compression strategy — see deflateInit2 below for details. Possible values of the data_type field (though see inflate). The deflate compression method (the only one supported in this version). For initializing zalloc, zfree, opaque. For compatibility with versions < 1.0.2.