From bd49a977169cea351cbe8a6deacab4f31dbf5210 Mon Sep 17 00:00:00 2001
From: highslide-software <support@highslide.com>
Date: Thu, 25 Nov 2010 09:33:42 +0100
Subject: [PATCH] Fixed infinite loop issue with low custom tickIntervals

---
 js/highcharts.src.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/js/highcharts.src.js b/js/highcharts.src.js
index b5ac8ecf518..45f89450d53 100644
--- a/js/highcharts.src.js
+++ b/js/highcharts.src.js
@@ -3929,8 +3929,12 @@ function Chart (options, callback) {
 		 * @param {Number} num
 		 */
 		function correctFloat(num) {
-			var invMag = (magnitude < 1 ? mathRound(1 / magnitude) : 1) * 10;
-			return mathRound(num * invMag) / invMag;
+			var invMag, ret = num;
+			if (defined(magnitude)) {
+				invMag = (magnitude < 1 ? mathRound(1 / magnitude) : 1) * 10;
+				ret = mathRound(num * invMag) / invMag;
+			}
+			return num; 
 		}
 				
 		/**