From 76d0af5599554d11f104d582cdac8fbaa8569fcc Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Fri, 4 Mar 2016 23:50:00 +0100
Subject: Clean up, add zerror and zperror, fix bugs and add more tests
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 src/zsub.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/zsub.c')

diff --git a/src/zsub.c b/src/zsub.c
index 1e2fe79..8616542 100644
--- a/src/zsub.c
+++ b/src/zsub.c
@@ -30,7 +30,7 @@ zsub_unsigned(z_t a, z_t b, z_t c)
 		a->chars[i] -= carry[i & 1];
 	}
 
-	if (carry[i] & 1) {
+	if (carry[i & 1]) {
 		while (!a->chars[i])
 			a->chars[i++] = ZAHL_CHAR_MAX;
 		a->chars[i] -= 1;
-- 
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