From 10a496dd3b21bc6e0e054ce5dab4ba965d9ad459 Mon Sep 17 00:00:00 2001
From: Skye <yeeqianskye@gmail.com>
Date: Sun, 14 Jan 2024 23:59:15 +0800
Subject: [PATCH] fix-dodomath-precision

---
 contracts/lib/DODOMath.sol | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/contracts/lib/DODOMath.sol b/contracts/lib/DODOMath.sol
index 18e560d..8e4e6a1 100644
--- a/contracts/lib/DODOMath.sol
+++ b/contracts/lib/DODOMath.sol
@@ -187,6 +187,9 @@ library DODOMath {
         uint256 numerator;
         if (bSig) {
             numerator = squareRoot.sub(bAbs);
+            if (numerator == 0) {
+                revert("DODOMath: should not be zero");
+            }
         } else {
             numerator = bAbs.add(squareRoot);
         }