Besj0 Besj0_sub Besj1 Besj1_sub Besjn Besjn_sub Besjnd Besjnd_sub Besjnu Besjnu_sub Besjnud Besjnud_sub Besy0 Besy0_sub Besy1 Besy1_sub Besyn Besyn_sub Besynd Besynd_sub Besynu Besynu_sub Besynud Besynud_sub Cbesh Cbesj Cbesy Sbesjn Sbesjn_sub Sbesjnu Sbesjnu_sub Sbesyn Sbesyn_sub Sbesynu Sbesynu_sub

Besjnu_sub() Sub Besjnu_sub ( Ret As  Double, Nu As  Double, X As  Double, Optional Info As  Long  ) Bessel function of the first kind of order ν Jν(x) (fractional order) (Subroutine version) Purpose Computes the Bessel function of the first kind of order ν Jν(x). Parameters [out] Ret Bessel function of the first kind of order ν Jν(x). [in] Nu Order ν. [in] X Argument x. (X >= 0 if ν is not an integer) [out] Info (Optional) = 0: Successful exit. = -2: The argument X had an illegal value. (X < 0 when ν is not an integer) = 1: Floating point range error. Reference boost/math/special_functions