0bd9e9bc457f88968d6eba0ebf684bd456502f6c
(cherry picked from commit 8877f8d9b2)
Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
For more information go to http://eigen.tuxfamily.org/.
For pull request, bug reports, and feature requests, go to https://gitlab.com/libeigen/eigen.