fd5d23fdf3c4d9ff638d5afdfb577bc4bd9b1eed
(cherry picked from commit ea62c937ed)
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.