besi0 besi1 besinu besk0 besk1 besknu

besi1() function besi1 ( x::Real  , scaling::Bool  = false  ) Modified Bessel functions of the first kind of order one I1(x) Purpose besi1 computes the modified Bessel function of the first kind of order one I1(x). Returns Float64 Modified Bessel functions of the first kind of order one I1(x). (if kode = 1) Exponentially scaled modified Bessel function of the first kind of order one exp(-|x|)*I1(x). (if kode = 2) Parameters [in] x Argument x. [in] scaling (Optional) A parameter to indicate the scaling option. (default = false) = false: No scaling. = true: Returns exponentially scaled values. Error handling Range error (ERANGE) may occur. Reference boost/math/special_functions