dlagtf(3) on Linux
The text 38c4d30f944d, as Debian 4.0 (Etch) 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 38c4d30f944d, as Debian 4.0 (Etch) 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,