From 8675b9d1a574aceb9a9d40c9c135db9c042e00b1 Mon Sep 17 00:00:00 2001
From: Vincent Laporte
Date: Mon, 22 Jul 2019 12:47:53 +0000
Subject: [Int63] Implement all primitives in OCaml

Primitive operations addc, addcarryc, subc, subcarryc, and diveucl are
implemented in the kernel so that they can be used by OCaml code (e.g.,
extracted code) as the other primitives.
---
 kernel/uint63.mli | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'kernel/uint63.mli')

diff --git a/kernel/uint63.mli b/kernel/uint63.mli
index 93632da110..5542716af2 100644
--- a/kernel/uint63.mli
+++ b/kernel/uint63.mli
@@ -37,6 +37,8 @@ val mul     : t -> t -> t
 val div     : t -> t -> t
 val rem     : t -> t -> t
 
+val diveucl : t -> t -> t * t
+
       (* Specific arithmetic operations *)
 val mulc    : t -> t -> t * t
 val addmuldiv : t -> t -> t -> t
@@ -57,3 +59,13 @@ val head0   : t -> t
 val tail0   : t -> t
 
 val is_uint63 : Obj.t -> bool
+
+(* Arithmetic with explicit carries *)
+
+(* Analog of Numbers.Abstract.Cyclic.carry *)
+type 'a carry = C0 of 'a | C1 of 'a
+
+val addc : t -> t -> t carry
+val addcarryc : t -> t -> t carry
+val subc : t -> t -> t carry
+val subcarryc : t -> t -> t carry
-- 
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