WBesi WBesj WBesk WBesy WCbrt WCelli1 WCelli2 WCelli3 WDconst WDigamma WE_1 WEi WExpm1 WFma WHypot WLi WLog1p WTrigamma

WBesj() Function WBesj ( X As  Double, Nu As  Double  ) Bessel function of the first kind of order ν Jν(x) (fractional order) Purpose WBesj computes the Bessel function of the first kind of order ν Jν(x). Returns Bessel function of the first kind of order ν Jν(x). Parameters [in] X Argument x. (X >= 0 if ν is not an integer) [in] Nu Order ν. Reference boost/math/special_functions