From 6ce8a049e4223b92393354fef542cac0d16e7b2a Mon Sep 17 00:00:00 2001
From: Sebastian Grewe <sebastian@grewe.ca>
Date: Mon, 31 Mar 2014 15:49:38 +0200
Subject: [PATCH] [FIX] Est. next diff with 0 hashrate

---
 public/include/classes/coins/coin_base.class.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/public/include/classes/coins/coin_base.class.php b/public/include/classes/coins/coin_base.class.php
index 1eb5470c..ae726321 100644
--- a/public/include/classes/coins/coin_base.class.php
+++ b/public/include/classes/coins/coin_base.class.php
@@ -53,7 +53,12 @@ class CoinBase extends Base {
    * Calculate next expected difficulty based on current difficulty
    **/
   public function calcExpectedNextDifficulty($dDifficulty, $dNetworkHashrate) {
-    return round($dDifficulty * $this->config['cointarget'] / $this->calcNetworkExpectedTimePerBlock($dDifficulty, $dNetworkHashrate), 8);
+    $iExpectedTimePerBlock = $this->calcNetworkExpectedTimePerBlock($dDifficulty, $dNetworkHashrate);
+    if (!empty($iExpectedTimePerBlock) && $iExpectedTimePerBlock > 0) {
+      return round($dDifficulty * $this->config['cointarget'] / $iExpectedTimePerBlock, 8);
+    } else {
+      return 0;
+    }
   }
 }