dgttrf(3) on Linux
The text 456a210052e2, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
compute an LU factorization of a real tridiagonal matrix A using elimination with partial pivoting and row interchanges
The text 456a210052e2, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
compute an LU factorization of a real tridiagonal matrix A using elimination with partial pivoting and row interchanges