Besj0 Besj1 Besjnu Besy0 Besy1 Besynu

Besy1() Function Besy1 ( X As  Double, Optional Info As  Long  ) Bessel function of the second kind of order one Y1(x) Purpose This routine computes the Bessel function of the second kind of order one Y1(x). Returns Double Bessel function of the second kind of order one Y1(x). Parameters [in] X Argument x. (X > 0) [out] Info (Optional) = 0: Successful exit. = -1: The argument X had an illegal value. (X <= 0) = 1: Floating point range error. Reference boost/math/special_functions