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7.32.2 Riemann Zeta Function Minus One
For large positive argument, the Riemann zeta function approaches one. In this region the fractional part is interesting, and therefore we need a function to evaluate it explicitly.
- Function: double gsl_sf_zetam1_int (int n)
- Function: int gsl_sf_zetam1_int_e (int n, gsl_sf_result * result)
These routines compute \zeta(n) - 1 for integer n, n \ne 1.
- Function: double gsl_sf_zetam1 (double s)
- Function: int gsl_sf_zetam1_e (double s, gsl_sf_result * result)
These routines compute \zeta(s) - 1 for arbitrary s, s \ne 1.