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(*
Copyright © 2011 MLstate
This file is part of OPA.
OPA is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License, version 3, as published by
the Free Software Foundation.
OPA is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
more details.
You should have received a copy of the GNU Affero General Public License
along with OPA. If not, see <http://www.gnu.org/licenses/>.
*)
#<Ifstatic:OCAML_WORD_SIZE 64>
type t = Nativeint.t
let ( + ) = Nativeint.add
let ( - ) = Nativeint.sub
let ( * ) = Nativeint.mul
let ( / ) = Nativeint.div
exception Overflow
let of_int = Nativeint.of_int
let to_int v =
let res = Nativeint.to_int v in
(* make sure that we don't loose the representation during the conversion *)
if v == of_int res then
res
else
raise Overflow
#<Else>
type t = Int64.t
let ( + ) = Int64.add
let ( - ) = Int64.sub
let ( * ) = Int64.mul
let ( / ) = Int64.div
let of_int v =
Int64.of_nativeint (Nativeint.of_int v)
exception Overflow
let to_int v =
let res = Nativeint.to_int (Int64.to_nativeint v) in
(* make sure that we don't loose the representation during the conversion *)
if v == of_int res then
res
else
raise Overflow
#<End>
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