sig
type t = { t_df : float; }
type elt = float
val sample : ?rng:Gsl.Rng.t -> size:int -> t -> elt array
val cumulative_probability : t -> x:elt -> float
val density : t -> x:elt -> float
val quantile : t -> p:float -> elt
val mean_opt : t -> float option
val variance_opt : t -> float option
val skewness_opt : t -> float option
val kurtosis_opt : t -> float option
val create : df:float -> Distributions.T.t
val mme : float array -> Distributions.T.t
end