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diff --git a/lib/bigint.mli b/lib/bigint.mli
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-(************************************************************************)
-(* v * The Coq Proof Assistant / The Coq Development Team *)
-(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
-(* \VV/ **************************************************************)
-(* // * This file is distributed under the terms of the *)
-(* * GNU Lesser General Public License Version 2.1 *)
-(************************************************************************)
-
-(** Arbitrary large integer numbers *)
-
-type bigint
-
-val of_string : string -> bigint
-(** May raise a Failure just as [int_of_string] on non-numerical strings *)
-
-val to_string : bigint -> string
-
-val of_int : int -> bigint
-val to_int : bigint -> int (** May raise a Failure on oversized numbers *)
-
-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 pow : bigint -> int -> bigint