bp_eiv computes a set of eigenvalues using the matrix data, which is supplied by bp_mat in the form of three files:
Selected set of J values and eigenvalues can be requested, and for each term the program can apply energy corrections. For each specified eigenvalues, the output file contains the dominant configuration and its energy, the eigenvector, and information identifying the case, such as J value, number of electrons, the atomic number and the Zeeman factor. 14.15