chebyshev_series, a Python code which evaluates a Chebyshev series approximating a function f(x), while efficiently computing one, two, three or four derivatives of the series, by Manfred Zimmer.
This library does not compute a Chebyshev series; it assumes that the series has already been computed, and offers an efficient means of evaluating the series and its derivatives simultaneously.
The information on this web page is distributed under the MIT license.
chebyshev_series is available in a C version and a C++ version and a Fortran77 version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.
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Manfred Zimmer