Overview

Rust implementation of HyperLogLog++ directly ported from the Java code in ZetaSketch. Based on commit a2f2692fae8cf61103330f9f70e696c4ba8b94b0.

This library allows to directly interoperate with sketches produced by ZetaSketch. Only portion of the code is ported. In particular, we currently support:

• reading and writing sketches in the binary proto format,
• computing set cardinality estimates,
• merging sketches.

The major unsupported bits are:

• adding values to the sketches,
• mixing sketches of different precisions.