From 5c2331f9ce6780bc3289bf06292cce27ce5edfa0 Mon Sep 17 00:00:00 2001
From: Yosuke Matsusaka <yosuke.matsusaka@gmail.com>
Date: Fri, 16 Nov 2018 11:19:15 +0900
Subject: [PATCH] fix problem of atan function when PARSE2NUMBER is true

---
 nerdamer.core.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nerdamer.core.js b/nerdamer.core.js
index b606a5cb..47cb6c9a 100644
--- a/nerdamer.core.js
+++ b/nerdamer.core.js
@@ -4015,6 +4015,7 @@ var nerdamer = (function(imports) {
                         return new Symbol(Math.atan(symbol.valueOf()));
                     if(symbol.isImaginary()) 
                         return complex.evaluate(symbol, 'atan');
+                    return _.symfunction('atan', arguments);
                 }
                 else if(symbol.equals(-1))
                     retval = _.parse('-pi/4');