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SUBROUTINE DEM53 (NIN,NOUT)
C$ (DEM53 - Discrete Smoothing Spline)
C$ Demonstration test for Duris' ACM Algorithm 547. This
C$ driver uses subroutine FITDSM to compute the discrete
C$ natural cubic spline which smooths through the data
C$ (TNODE(I),G(I)),I = 1,2,...,N as specified by the smoothing
C$ parameter RHO and the weights WGS(I), I = 1,2,...,N. Plots
C$ of the input data and the interpolated function values are
C$ produced for five values of the smoothing parameter, RHO.
C$ (10-APR-82)