Cacos Cacosh Casin Catan Catanh Ccos Ccosh Ccot Cexp Cexpm1 Clog Clog1p Csin Csinh Ctan Ctanh

Catan() Function Catan ( Z As  Complex ) Complex arctan(z) Purpose Computes the arc tangent of complex number z in radians. Returns Complex arctan(z). (-π/2 <= real(arctan(z)) <= π/2) Parameters [in] Z Complex argument z.