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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id: bigint.mli 6616 2005-01-21 17:18:23Z herbelin $ i*)
(*i*)
open Pp
(*i*)
(* Arbitrary large integer numbers *)
type bigint
val of_string : string -> bigint
val to_string : bigint -> string
val zero : bigint
val one : bigint
val two : bigint
val div2_with_rest : bigint -> bigint * bool (* true=odd; false=even *)
val add_1 : bigint -> bigint
val sub_1 : bigint -> bigint
val mult_2 : bigint -> bigint
val add : bigint -> bigint -> bigint
val sub : bigint -> bigint -> bigint
val mult : bigint -> bigint -> bigint
val euclid : bigint -> bigint -> bigint * bigint
val less_than : bigint -> bigint -> bool
val equal : bigint -> bigint -> bool
val is_strictly_pos : bigint -> bool
val is_strictly_neg : bigint -> bool
val is_pos_or_zero : bigint -> bool
val is_neg_or_zero : bigint -> bool
val neg : bigint -> bigint
val pr_bigint : bigint -> std_ppcmds
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