module T: sig .. end
sig
end
include Core_kernel.Std.Float
include struct ... end
val diff : t -> t -> Span.t
t -> t -> Span.t
val abs_diff : t -> t -> Span.t
val add : float -> Span.t -> float
float -> Span.t -> float
val sub : float -> Span.t -> float
val now : unit -> float
unit -> float