freebsd-ports/math/hmat-oss/pkg-descr

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A hierarchical matrix C/C++ library including a LU solver.
Hierarchical matrices are semi-sparse matrices that have a hierarchical block
structure with dense blocks hierarchically embedded into other blocks, and the
elements not covered by blocks are zero.
For a more detailed definition please see the wikipedia article
"Hierarchical matrix".
WWW: https://github.com/jeromerobert/hmat-oss