A high-speed method for solving eigenvalue problems: Use of the spline function in Milne’s method. Nature of problem: For high energy, nuclear and other branches of physics, in evaluating eigenvalues for the Sturm-Liouville type linear differential equations, including Schrodinger equations, the conventional method of trial and error requires much computer time. Efficient and speedy procedures are desired to calculate the eigenvalues. Solution method: Using the spline function in Milne’s method for eigenvalue problems of the Sturm-Liouville type linear equations, we support a program package MEIGEN.