Ccluster is a C library implementing an algorithm for local clustering of the
complex roots of a univariate polynomial whose coefficients are complex
numbers.
The inputs of the clustering algorithm are a polynomial P, a square complex
box B and a rational number eps.
It outputs a set of eps-natural clusters of roots together with the sum of
multiplicities of the roots in each cluster. An eps-cluster is a complex disc
D of radius at most eps containing at least one root, and it is natural when
3D contains the same roots as D. Each root of P in B is in exactly one
cluster of the output, and clusters may contain roots of P in 2B.
The implemented algorithm is described here:
https://dl.acm.org/citation.cfm?id=2930939.
Please cite https://link.springer.com/chapter/10.1007/978-3-319-96418-8_28 if
you use it in your research.
* Mon Aug 17 2026 Jerry James <loganjerry@gmail.com> - 1.1.8-5
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