Subroutines in LAPACK Have got a naming Conference that makes the identifiers pretty compact. This was necessary as the 1st Fortran expectations only supported identifiers up to six people very long, And so the names needed to be shortened to suit into this Restrict.[2]: "Naming Scheme" Know When to Quit: https://emiliocebwq.thenerdsblog.com/32185148/the-definitive-guide-to-lapak77