chebyshev_interp_1d_test, a C code which calls chebyshev_interp_1d() to determine the combination of Chebyshev polynomials which interpolates a set of data, so that p(x(i)) = y(i).
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chebyshev_interp_1d, a C code which determines the combination of Chebyshev polynomials that interpolates a set of data, so that p(x(i)) = y(i).