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Bessel (version 0.7-0)

Computations and Approximations for Bessel Functions

Description

Computations for Bessel function for complex, real and partly 'mpfr' (arbitrary precision) numbers; notably interfacing TOMS 644; approximations for large arguments, experiments, etc.

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Version

Install

install.packages('Bessel')

Monthly Downloads

22,798

Version

0.7-0

License

GPL (>= 2)

Maintainer

Martin Maechler

Last Published

January 11th, 2026

Functions in Bessel (0.7-0)

besselI.nuAsym

Asymptotic Expansion of Bessel I(x,nu) and K(x,nu) for Large nu (and x)
bI

Bessel I() function Simple Series Representation
besselIasym

Asymptotic Expansion of Bessel I(x,nu) and K(x,nu) For Large x
Airy

Airy Functions (and Their First Derivative)
besselJs

Bessel J() function Simple Series Representation
BesselH

Hankel (H-Bessel) Function (of Complex Argument)
bessJsmlNu

Bessel \(J_\nu(x)\) for Very Small Order \(\nu\)
Bessel

Bessel Functions of Complex Arguments I(), J(), K(), and Y()