From 3e92b74d23559a2b73e083a8bad85b21514f2fc2 Mon Sep 17 00:00:00 2001
From: Tom Manion <thomas.w.manion@accenture.com>
Date: Sat, 30 Dec 2017 16:18:17 -0600
Subject: [PATCH] Do not let dy be NaN

---
 src/convnet_layers_loss.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/convnet_layers_loss.js b/src/convnet_layers_loss.js
index 5906e34b..e9303a35 100644
--- a/src/convnet_layers_loss.js
+++ b/src/convnet_layers_loss.js
@@ -137,6 +137,9 @@
         var i = y.dim;
         var yi = y.val;
         var dy = x.w[i] - yi;
+        if (isNaN(dy)) {
+          dy = 0;
+        }
         x.dw[i] = dy;
         loss += 0.5*dy*dy;
       }