pub fn beta_quantile(p: f64, a: f64, b: f64) -> f64Expand description
Quantile (inverse CDF) of a Beta distribution with shape parameters a > 0
and b > 0 at probability p: the value x in [0, 1] with
I_x(a, b) = p, where I is the regularized incomplete beta.
p <= 0 maps to the support floor and p >= 1 to the support ceiling. A
non-finite or non-positive shape yields NaN.