Piecewise polynomial approximation: code generator for Chebyshev approximation

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  • License: GNU General Public License v3 or later (GPLv3+) (GPL-3.0-or-later)
  • Tags chebyshev , approximation , polynomial , code-generation , numerical
  • Requires: Python >=3.9
  • Provides-Extra: dev
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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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  • License: GNU General Public License v3 or later (GPLv3+) (GPL-3.0-or-later)
  • Tags chebyshev , approximation , polynomial , code-generation , numerical
  • Requires: Python >=3.9
  • Provides-Extra: dev
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