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Introduce second order fixed-point driver#123

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TimSiebert1 wants to merge 2 commits intomasterfrom
sec_order_fp
Open

Introduce second order fixed-point driver#123
TimSiebert1 wants to merge 2 commits intomasterfrom
sec_order_fp

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@TimSiebert1 TimSiebert1 commented Jul 3, 2025

  • Move fpi_stack to the tape where it belongs
  • remove "fpi_stack_clear"
  • document code
  • add test for second order problem
  • use std::span for the interface in fp_fos_forward etc.

…ed-point computations

This PR introduces several modernizations like encapsulation of common methods to reduce code dublication or re-organize the code to have a clear meaning. There is now a FpMode enum which is used as template argument for fp_iteration to enable support for second order fixed-point computations. The theory of second order fp is based on the paper by Oliver sander and Andrea walther.
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