besj0 besj1 besjnu besy0 besy1 besynu

besjnu() function besjnu ( nu::Real  , x::Real    ) Bessel function of the first kind of order ν Jν(x) (fractional order) Purpose besjnu computes the Bessel function of the first kind of order ν Jν(x). Returns Float64 Bessel function of the first kind of order ν Jν(x). Parameters [in] nu Order ν. [in] x Argument x. (x >= 0 if ν is not an integer) Error handling If nu is not an integer and x < 0, domain error (EDOM) occurs. Range error (ERANGE) may occur. Reference boost/math/special_functions