Function rgsl::gamma_beta::incomplete_gamma::gamma_inc_Q_e

pub fn gamma_inc_Q_e(a: f64, x: f64) -> (Value, Result)

This routine computes the normalized incomplete Gamma Function Q(a,x) = 1/\Gamma(a) \int_x^\infty dt t^{a-1} \exp(-t) for a > 0, x >= 0.