oops, don't set the precision to -1 !!
oops, don't set the precision to -1 !!

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