Zeta

Zeta() Function Zeta ( X As  Double, Optional Info As  Long  ) Riemann zeta function ζ(x) Purpose This routine computes the Riemann zeta function. ζ(s) = Σ1/n^s (for n = 1 to ∞) Returns Double Riemann zeta function ζ(x). Parameters [in] X Argument x. (X <> 1) [out] Info (Optional) = 0: Successful exit. = -1: The argument X had an illegal value. (X = 1) = 1: Floating point range error. Reference boost/math/special_functions