Not-Quite-Transcendental Functions For Logarithmic Interpolation of Tabulated Data

Fuente: arXiv
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Autores principales: Hammond, Peter C., Fields, Jacob M., Miller, Jonah M., Barker, Brandon L.
Formato: Preprint
Publicado: 2025
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author Hammond, Peter C.
Fields, Jacob M.
Miller, Jonah M.
Barker, Brandon L.
author_facet Hammond, Peter C.
Fields, Jacob M.
Miller, Jonah M.
Barker, Brandon L.
contents From tabulated nuclear and degenerate equations of state to photon and neutrino opacities, to nuclear reaction rates: tabulated data is ubiquitous in computational astrophysics. The dynamic range that must be covered by these tables typically spans many orders of magnitude. Here we present a novel strategy for accurately and performantly interpolating tabulated data that spans these large dynamic ranges. We demonstrate the efficacy of this strategy in tabulated lookups for nuclear and terrestrial equations of state. We show that this strategy is a faster \textit{drop-in} replacement for linear interpolation of logarithmic grids.
format Preprint
id arxiv_https___arxiv_org_abs_2501_05410
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Not-Quite-Transcendental Functions For Logarithmic Interpolation of Tabulated Data
Hammond, Peter C.
Fields, Jacob M.
Miller, Jonah M.
Barker, Brandon L.
Computational Physics
Numerical Analysis
From tabulated nuclear and degenerate equations of state to photon and neutrino opacities, to nuclear reaction rates: tabulated data is ubiquitous in computational astrophysics. The dynamic range that must be covered by these tables typically spans many orders of magnitude. Here we present a novel strategy for accurately and performantly interpolating tabulated data that spans these large dynamic ranges. We demonstrate the efficacy of this strategy in tabulated lookups for nuclear and terrestrial equations of state. We show that this strategy is a faster \textit{drop-in} replacement for linear interpolation of logarithmic grids.
title Not-Quite-Transcendental Functions For Logarithmic Interpolation of Tabulated Data
topic Computational Physics
Numerical Analysis
url https://arxiv.org/abs/2501.05410