sig
val firing_interval : float -> float -> int -> float * float
val random_firing_time : float -> int -> float
val round_float : float -> float
val int_of_fi : float * float -> int * int
val round_fi_closest : float * float -> int * int
val round_fi_ex : float * float -> int * int
val round_fi_in : float * float -> int * int
val zoom_fi : float -> float * float -> float * float
val rsa_of_firinginterval : float * float -> float -> float * int
end