Micromega_plugin.Itvtype interval = Micromega_core_plugin.NumCompat.Q.t option * Micromega_core_plugin.NumCompat.Q.t optionval pp : Stdlib.out_channel -> interval -> unitval range : interval -> Micromega_core_plugin.NumCompat.Q.t optionval in_bound : interval -> Micromega_core_plugin.NumCompat.Q.t -> bool