Subroutines in LAPACK Use a naming Conference that makes the identifiers very compact. This was essential as the first Fortran expectations only supported identifiers up to 6 figures extensive, so the names had to be shortened to fit into this limit.[two]: "Naming Scheme" So Why don't you take an opportunity https://lapak7757530.answerblogs.com/26874456/slot-lapak77-an-overview