ppapp - piecewise polynomial approximation of real functions
Code generator for piecewise Chebyshev approximation of smooth real-valued functions.
Overview
This package generates C source code containing polynomial coefficients that approximate a given function f(x) over a specified domain. The approximation uses piecewise Chebyshev polynomials with octave-based domain subdivision for optimal accuracy.
Reference: Joachim Wuttke and Alexander Kleinsorge, "Algorithm 1062: Code generation for piecewise Chebyshev approximation", ACM Transactions on Mathematical Software (2026), https://doi.org/10.1145/380569
Documentation: userManual.pdf
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