XLPack 7.0
XLPack Numerical Library (Excel VBA) Reference Manual
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◆ Beskn_sub()

Sub Beskn_sub ( Ret As  Double,
N As  Long,
X As  Double,
Optional Info As  Long 
)

Modified Bessel function of the second kind of order n Kn(x) (Subroutine version)

Purpose
Computes the modified Bessel function of the second kind of order n Kn(x).
Parameters
[out]RetModified Bessel function of the second kind of order n Kn(x).
[in]NOrder n.
[in]XArgument x (X > 0).
[out]Info(Optional)
= 0: Successful exit.
= -2: The argument X had an illegal value. (X <= 0)
= 1: Floating point range error.
Reference
boost/math/special_functions