besi0 besi0e besi1 besi1e besin besind besinu besinud besk0 besk0e besk1 besk1e beskn besknd besknu besknud cbesi cbesk sbesin sbesinu sbeskn sbesknu

besk1() double besk1 ( double  x ) Modified Bessel functions of the second kind of order one K1(x) Purpose besk1 computes the modified Bessel function of the second kind of order one K1(x). Returns Modified Bessel functions of the second kind of order one K1(x). Parameters [in] x Argument x (x > 0). Error handling If x < 0, domain error (EDOM) occurs. Range error (ERANGE) may occur. Reference boost/math/special_functions