From 7bdf1ccb234f9a107d9c68725c077cdbe2dd3acc Mon Sep 17 00:00:00 2001
From: 0140454 <s1994928@yahoo.com.tw>
Date: Sun, 8 Jan 2017 12:30:03 +0800
Subject: [PATCH] Include necessary header file for std::abs
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While compiling Latte-Dock, i got the following error:

/data/latte-dock/src/latte-dock-git/app/iconitem.cpp:393:46:   required from here
/data/latte-dock/src/latte-dock-git/app/../liblattedock/extras.h:69:20: error: call of overloaded ‘abs(double)’ is ambiguous
     return std::abs(x - y) < std::numeric_limits<T>::epsilon() *
     std::abs(x + y) * ulp

In order to solve this error, i have to include `cmath`.
---
 liblattedock/extras.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/liblattedock/extras.h b/liblattedock/extras.h
index 3d0cf87db..d48880bfc 100644
--- a/liblattedock/extras.h
+++ b/liblattedock/extras.h
@@ -13,6 +13,7 @@
 #include <type_traits>
 #include <numeric>
 #include <memory>
+#include <cmath>
 
 #if __GLIBCXX__ <= 20150623
 namespace std {