Besj0 Besj1 Besjnu Besy0 Besy1 Besynu

Besj0() Function Besj0 ( X As  Double, Optional Info As  Long  ) Bessel function of the first kind of order zero J0(x) Purpose This routine computes the Bessel function of the first kind of order zero J0(x). Returns Double Bessel function of the first kind of order zero J0(x). Parameters [in] X Argument x. [out] Info (Optional) = 0: Successful exit. = 1: Floating point range error. Reference boost/math/special_functions