Revert "avoid selecting half-packets when unnecessary" This reverts commit 5ca10480b0756e40b0723d90adeba8506291fc7c
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.