7. UNUSUAL FEATURES OF THE PROGRAM
This program has been used for the determination of feedback parameters, control rod design, and evaluation of control rod worth. Various modes of solution allow high precision with analytic data or the analysis of digitalized data from recording equipment. Smoothing of input data may be obtained by single or repeated application of five-point cubic, five-point parabolic, three-point linear, or five-point linear least-mean-square smoothing formulae. Tabular output includes excess reactivity, its first and second derivatives, input and smoothed input data, integral of neutron density, and instantaneous period. Precursor data may be input or obtained from the program library. Steady-state initial conditions may be specified by input of a constant reactivity or period. Non-steady-state conditions require precursor density information. Discontinuous changes in reactivity may be given as input or calculated by the program. Any number of reruns with varying solution modes and smoothing options may be scheduled.