besj0 besj1 besjnu besy0 besy1 besynu

besj1() function besj1 ( x::Real  ) Bessel functions of the first kind of order one J1(x) Purpose besjnu computes the Bessel function of the first kind of order one J1(x). Returns Float64 Bessel functions of the first kind of order one J1(x). Parameters [in] x Argument x. Error handling Range error (ERANGE) may occur. Reference boost/math/special_functions