dlagtf(3) on Linux
The text 2489a2a3a2f2, as Debian 3.1 (Sarge) shipped it.
factorize the matrix (T - lambda*I), where T is an n by n tridiagonal matrix and lambda is a scalar, as T - lambda*I = PLU,
The text 2489a2a3a2f2, as Debian 3.1 (Sarge) shipped it.
factorize the matrix (T - lambda*I), where T is an n by n tridiagonal matrix and lambda is a scalar, as T - lambda*I = PLU,