From 41cdecdb461149df54e0c81f97ec9d9fa0c3b6b7 Mon Sep 17 00:00:00 2001
From: Lauren Budorick <lauren@mapbox.com>
Date: Thu, 15 Dec 2016 17:53:27 -0800
Subject: [PATCH] Eliminate Math.sign, which is unsupported in IE11. Fix #3814.
 (#3815)

---
 js/symbol/shaping.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/symbol/shaping.js b/js/symbol/shaping.js
index 611edeba9ca..f88b60361e5 100644
--- a/js/symbol/shaping.js
+++ b/js/symbol/shaping.js
@@ -112,7 +112,7 @@ function calculateBadness(lineWidth, targetWidth, penalty, isLastBreak) {
         // Be more tolerant of short final lines
         return Math.max(0, raggedness - 150);
     }
-    return raggedness + (Math.sign(penalty) * Math.pow(penalty, 2));
+    return raggedness + Math.abs(penalty) * penalty;
 }
 
 function calculatePenalty(codePoint, previousCodePoint) {