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module type COMPARABLE = sig
type t
val eq: t -> t -> bool
val neq: t -> t -> bool
val lt: t -> t -> bool
val le: t -> t -> bool
val gt: t -> t -> bool
val ge: t -> t -> bool
end
module Comparable = struct
let eq = (=)
let neq = (<>)
let lt = (<)
let le = (<=)
let gt = (>)
let ge = (>=)
end
module Num = struct
let rnd () =
let value = Random.bits () in
Q.make (Z.of_int value) (Z.of_int (1 lsl 30))
include Q
let eq = Q.equal
let neq a b = not (Q.equal a b)
let mult = Q.mul
let floor f = Q.of_bigint (Q.to_bigint f)
let ge = Q.geq
let ge = Q.geq
let le = Q.leq
let pow t q_factor =
let factor = Q.to_int q_factor
and num = Q.num t
and den = Q.num t in
Q.make (Z.pow num factor) (Z.pow den factor)
let gcd t1 t2 =
Q.of_bigint @@ Z.gcd (Q.to_bigint t1) (Q.to_bigint t2)
let lcm t1 t2 =
Q.of_bigint @@ Z.lcm (Q.to_bigint t1) (Q.to_bigint t2)
let is_integer t = (Q.den t) == Z.one
end
module Bool = struct
type t = bool
include Comparable
let true_ = true
let false_ = false
let or_ = (||)
let and_ = (&&)
let not = Pervasives.not
end
module String = struct
type t = UTF8.t
include Comparable
end
module Date = Date.Make(Num)
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