From b5f81bb54de3eb6ce13399c3c60a3861964800ff Mon Sep 17 00:00:00 2001
From: Hao Huang <hhbuhuiai@163.com>
Date: Sun, 4 Aug 2024 15:22:06 +0800
Subject: [PATCH] optimize utils.droots

---
 src/utils.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/utils.js b/src/utils.js
index e4ab49c..b66f934 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -624,7 +624,11 @@ const utils = {
         c = p[2],
         d = a - 2 * b + c;
       if (d !== 0) {
-        const m1 = -sqrt(b * b - a * c),
+        const m1Pow2 = b * b - a * c
+        if (m1Pow2 < 0) {
+          return []
+        }
+        const m1 = -sqrt(m1Pow2),
           m2 = -a + b,
           v1 = -(m1 + m2) / d,
           v2 = -(-m1 + m2) / d;