lae2: 2x2 eig, step in steqr, stemr

Functions
subroutine	dlae2 (a, b, c, rt1, rt2)
	DLAE2 computes the eigenvalues of a 2-by-2 symmetric matrix.
subroutine	slae2 (a, b, c, rt1, rt2)
	SLAE2 computes the eigenvalues of a 2-by-2 symmetric matrix.

Detailed Description