dgttrf(3) on Linux
The text e6d974f709f1, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
compute an LU factorization of a real tridiagonal matrix A using elimination with partial pivoting and row interchanges
The text e6d974f709f1, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
compute an LU factorization of a real tridiagonal matrix A using elimination with partial pivoting and row interchanges