From 1eaa169bbdf3fd2facb345abbb607332b5a71d3b Mon Sep 17 00:00:00 2001
From: Isaac Holt <isaac_holt@icloud.com>
Date: Fri, 20 Sep 2024 14:47:36 +0100
Subject: [PATCH] fix carrying_add and borrwing_sub

---
 src/int/bigint_helpers.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/int/bigint_helpers.rs b/src/int/bigint_helpers.rs
index 6d76ca0..7e387da 100644
--- a/src/int/bigint_helpers.rs
+++ b/src/int/bigint_helpers.rs
@@ -7,7 +7,7 @@ macro_rules! impls {
             let (s1, o1) = self.overflowing_add(rhs);
             if carry {
                 let (s2, o2) = s1.overflowing_add(Self::ONE);
-                (s2, o1 || o2)
+                (s2, o1 ^ o2)
             } else {
                 (s1, o1)
             }
@@ -20,7 +20,7 @@ macro_rules! impls {
             let (s1, o1) = self.overflowing_sub(rhs);
             if borrow {
                 let (s2, o2) = s1.overflowing_sub(Self::ONE);
-                (s2, o1 || o2)
+                (s2, o1 ^ o2)
             } else {
                 (s1, o1)
             }