8a21df2d9cc2812bd487df2b7e3d7bce0d9bdfd2
(cherry picked from commit 73b2c13bf2)
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.