From e7e0bbfbe5d8e7eccc36979c0d3d9d64322bdd99 Mon Sep 17 00:00:00 2001
From: jriegel <FreeCAD@juergen-riegel.net>
Date: Mon, 16 Dec 2013 00:20:47 +0100
Subject: [PATCH] Try to fix std::abs() error...

---
 src/Base/UnitsSchemaImperial1.cpp | 1 +
 src/Base/UnitsSchemaInternal.cpp  | 2 ++
 src/Base/UnitsSchemaMKS.cpp       | 1 +
 3 files changed, 4 insertions(+)

diff --git a/src/Base/UnitsSchemaImperial1.cpp b/src/Base/UnitsSchemaImperial1.cpp
index cb226bcb3..57a127cbf 100644
--- a/src/Base/UnitsSchemaImperial1.cpp
+++ b/src/Base/UnitsSchemaImperial1.cpp
@@ -30,6 +30,7 @@
 #include "Exception.h"
 #include "UnitsApi.h"
 #include "UnitsSchemaImperial1.h"
+#include <cmath>
 
 using namespace Base;
 
diff --git a/src/Base/UnitsSchemaInternal.cpp b/src/Base/UnitsSchemaInternal.cpp
index b9c212c49..d4c9e7d3a 100644
--- a/src/Base/UnitsSchemaInternal.cpp
+++ b/src/Base/UnitsSchemaInternal.cpp
@@ -30,6 +30,8 @@
 #include "Exception.h"
 #include "UnitsApi.h"
 #include "UnitsSchemaInternal.h"
+#include <cmath>
+
 
 using namespace Base;
 
diff --git a/src/Base/UnitsSchemaMKS.cpp b/src/Base/UnitsSchemaMKS.cpp
index c9041e7c3..573f58765 100644
--- a/src/Base/UnitsSchemaMKS.cpp
+++ b/src/Base/UnitsSchemaMKS.cpp
@@ -30,6 +30,7 @@
 #include "Exception.h"
 #include "UnitsApi.h"
 #include "UnitsSchemaMKS.h"
+#include <cmath>
 
 using namespace Base;