package preface

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package preface
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Source file meet_semilattice.ml

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module type LAWS = sig
  type t

  val meet_semilattice_1 : unit -> (t, t -> t -> t) Law.t
  val meet_semilattice_2 : unit -> (t, t -> t) Law.t
  val meet_semilattice_3 : unit -> (t, t) Law.t
end

module For (L : Preface_specs.MEET_SEMILATTICE) : LAWS with type t := L.t =
struct
  open Law

  let meet_semilattice_1 () =
    let lhs x y z = L.meet x (L.meet y z)
    and rhs x y z = L.meet (L.meet x y) z in
    law ("meet x (meet y z)" =~ lhs) ("meet (meet x y) z" =~ rhs)
  ;;

  let meet_semilattice_2 () =
    let lhs x y = L.meet x y
    and rhs x y = L.meet y x in
    law ("meet x y" =~ lhs) ("meet y x" =~ rhs)
  ;;

  let meet_semilattice_3 () =
    let lhs x = L.meet x x
    and rhs x = x in
    law ("meet x x" =~ lhs) ("x" =~ rhs)
  ;;
end
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