...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Fine tune internal compression parameters.
void tune( int good_length, int max_lazy, int nice_length, int max_chain);
Compression parameters should only be tuned by someone who understands the algorithm used by zlib's deflate for searching for the best matching string, and even then only by the most fanatic optimizer trying to squeeze out the last compressed bit for their specific input data. Read the deflate.c source code (ZLib) for the meaning of the max_lazy, good_length, nice_length, and max_chain parameters.