dlagtf(3) on Linux
The text f2e6dfbcb105, as Debian 1.3 (Bo) 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 f2e6dfbcb105, as Debian 1.3 (Bo) 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,