Passage d'une bibliothèque de grands entiers naturels vers une bibliothèques de grands entiers relatifs munis des 4 opérations de base

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@6499 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 45 insertions, 0 deletions

diff --git a/lib/bigint.mli b/lib/bigint.mli
new file mode 100644
index 0000000000..38de5b6172
--- /dev/null
+++ b/lib/bigint.mli
@@ -0,0 +1,45 @@
+(************************************************************************)
+(*  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        *)
+(************************************************************************)
+
+(* $Id$ *)
+
+(*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