besj0 besj1 besjn besjnd besjnu besjnud besy0 besy1 besyn besynd besynu besynud cbesh cbesj cbesy sbesjn sbesjnu sbesyn sbesynu

besjnud() double besjnud ( double  nu, double  x  ) Derivative J'ν(x) of Bessel function of the first kind of order ν Iν(x) (fractional order) Purpose besjnud computes the derivative J'ν(x) of the Bessel function of the first kind of order ν Iν(x). Returns J'ν(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