What has become of John Maddock's implementation of the Remez algorithm for Chebychev approximation?
Until v1.53, Boost Math had doc pages [1,2] on the Remez algorithm. This algorithm [3] computes the coefficents of the Chebyshev polynomial that approximates a given function. Page [2] refers to actual code in directory libs/math/minimax. This code can still be found on GitHub [4], but maintenance status and dependences are unclear. Anybody around who knows anything about this code? Kind regards, Joachim [1] https://www.boost.org/doc/libs/1_53_0/libs/math/doc/sf_and_dist/html/math_to... [2] https://www.boost.org/doc/libs/1_53_0/libs/math/doc/sf_and_dist/html/math_to... [3] https://en.wikipedia.org/wiki/Remez_algorithm [4] https://github.com/boostorg/math/tree/develop/tools/minimax -- Dr. Joachim Wuttke group leader Scientific Computing Forschungszentrum Jülich GmbH Jülich Centre for Neutron Science at MLZ https://computing.mlz-garching.de https://jugit.fz-juelich.de/mlz
On 15/06/2021 22:48, Joachim Wuttke via Boost wrote:
Until v1.53, Boost Math had doc pages [1,2] on the Remez algorithm. This algorithm [3] computes the coefficents of the Chebyshev polynomial that approximates a given function. Page [2] refers to actual code in directory libs/math/minimax. This code can still be found on GitHub [4], but maintenance status and dependences are unclear.
Anybody around who knows anything about this code?
It's still semi-documented in the last release: https://www.boost.org/doc/libs/1_76_0/libs/math/doc/html/math_toolkit/intern... This code is/was an internal detail that I used to generate the rational minimax approximations used in the library, the code should still be working so far as I know. What did you want to know? Regards, John Maddock. -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
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Joachim Wuttke -
John Maddock