Eigen  3.4.90 (git rev 67eeba6e720c5745abc77ae6c92ce0a44aa7b7ae)
Extending/Customizing Eigen

Eigen can be extended in several ways, for instance, by defining global methods, by inserting custom methods within main Eigen's classes through the plugin mechanism, by adding support to custom scalar types etc. See below for the respective sub-topics.