replaced Ifloat => real_of_float and real, renamed ApproxEq => inequality, uneq => interpret_inequality, uneq' => approx_inequality, Ifloatarith => interpret_floatarith
(* Title: Pure/ML-Systems/install_pp_polyml.ML
Extra toplevel pretty-printing for Poly/ML.
*)
install_pp (fn (str, _, _, _) => fn depth => fn (print: 'a * int -> unit) => fn (x: 'a future) =>
(case Future.peek x of
NONE => str "<future>"
| SOME (Exn.Exn _) => str "<failed>"
| SOME (Exn.Result y) => print (y, depth)));
install_pp (fn (str, _, _, _) => fn depth => fn (print: 'a * int -> unit) => fn (x: 'a lazy) =>
(case Lazy.peek x of
NONE => str "<lazy>"
| SOME (Exn.Exn _) => str "<failed>"
| SOME (Exn.Result y) => print (y, depth)));