From b2924a90cf8257c314110919316e767d3c556a3f Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Sun, 20 Sep 2026 21:09:38 +0800
Subject: samesign

---
 bits.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'bits.c')

diff --git a/bits.c b/bits.c
index 951cc91..7e0ed68 100644
--- a/bits.c
+++ b/bits.c
@@ -50,7 +50,11 @@ int bitXor(int x, int y) {
  *   1 if x and y have the same sign , 0 otherwise.
  */
 int samesign(int x, int y) {
-    return 2;
+    if (!x)
+      return !y;
+    if (!y)
+      return 0;
+    return !((x ^ y) >> 31);
 }
 
 /*
-- 
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