bessel_i

Computes the modified Bessel function of the first kind for real or complex inputs.

Exports an 'Rcpp' interface for the Bessel functions in the 'Bessel' package, which can then be called from the 'C++' code of other packages. For the original 'Fortran' implementation of these functions see Amos (1995) <doi:10.1145/212066.212078>.

Alexios Ghalanos

RcppBessel

Bessel Functions Rcpp Interface

Alexios Galanos

Martin Maechler

Donald E. Amos

bessel_i function

<dl><dt>z</dt>
<dd>A numeric or complex vector representing the input values at which to evaluate the Bessel function.</dd>
<dt>nu</dt>
<dd>A double representing the order of the Bessel function.</dd>
<dt>expon_scaled</dt>
<dd>A logical value indicating whether to use the exponentially scaled form of the Bessel function. Defaults to <code>FALSE</code>.</dd>
<dt>verbose</dt>
<dd>An integer specifying the verbosity level for error messages. Defaults to <code>0</code>.</dd></dl>

Arguments

The BesselI Function — bessel_i

<dl>

<dt>z</dt>
<dd>A numeric or complex vector representing the input values at which to evaluate the Bessel function.</dd>


<dt>nu</dt>
<dd>A double representing the order of the Bessel function.</dd>


<dt>expon_scaled</dt>
<dd>A logical value indicating whether to use the exponentially scaled form of the Bessel function. Defaults to <code>FALSE</code>.</dd>


<dt>verbose</dt>
<dd>An integer specifying the verbosity level for error messages. Defaults to <code>0</code>.</dd>

</dl>

bessel_i: The BesselI Function

Description

Usage

Value

Arguments

References