Changed Diagonal::index() to return an Index type instead of int to prevent possible implicit conversion from long to int. Added inline keyword to member methods.
Changed Diagonal::index() to return an Index type instead of int to prevent possible implicit conversion from long to int.
Added inline keyword to member methods.

--HG--
extra : transplant_source : %22%8BlZ%E1%12%EFm%9D%3A%D3%E3%1Dn%9A%96%14r%7D%18

madlib/eigen_backup,madlib/eigen_backup,madlib/eigen_backup,rotorliu/eigen,mjbshaw/Eigen,mjbshaw/Eigen,rotorliu/eigen,rotorliu/eigen,mjbshaw/Eigen,rotorliu/eigen,madlib/eigen_backup,mjbshaw/Eigen