Besi0 Besi0_sub Besi1 Besi1_sub Besin Besin_sub Besind Besind_sub Besinu Besinu_sub Besinud Besinud_sub Besk0 Besk0_sub Besk1 Besk1_sub Beskn Beskn_sub Besknd Besknd_sub Besknu Besknu_sub Besknud Besknud_sub Cbesi Cbesk Sbesin Sbesin_sub Sbesinu Sbesinu_sub Sbeskn Sbeskn_sub Sbesknu Sbesknu_sub

Besknd_sub() Sub Besknd_sub ( Ret As  Double, N As  Long, X As  Double, Optional Info As  Long  ) Derivative K'n(x) of modified Bessel functions of the second kind of order n Kn(x) (Subroutine version) Purpose Computes the derivative K'n(x) of the modified Bessel function of the second kind of order n Kn(x). Parameters [out] Ret The derivative K'n(x) of the modified Bessel function of the second kind of order n Kn(x). [in] N Order n. [in] X Argument 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