lagtf: LU factor of (T - λI)

Collaboration diagram for lagtf: LU factor of (T - λI):

Functions
subroutine	dlagtf (n, a, lambda, b, c, tol, d, in, info)
	DLAGTF computes an LU factorization of a matrix T-λI, where T is a general tridiagonal matrix, and λ a scalar, using partial pivoting with row interchanges.
subroutine	slagtf (n, a, lambda, b, c, tol, d, in, info)
	SLAGTF computes an LU factorization of a matrix T-λI, where T is a general tridiagonal matrix, and λ a scalar, using partial pivoting with row interchanges.

Detailed Description