diff --git a/src/backends/reference/workloads/Abs.hpp b/src/backends/reference/workloads/Abs.hpp
index b1165d2..b05f2e3 100644
--- a/src/backends/reference/workloads/Abs.hpp
+++ b/src/backends/reference/workloads/Abs.hpp
@@ -1,19 +1,22 @@
 //
-// Copyright © 2017 Arm Ltd. All rights reserved.
+// Copyright © 2019 Arm Ltd. All rights reserved.
 // SPDX-License-Identifier: MIT
 //
 
-#include "BaseIterator.hpp"
-#include <armnn/Tensor.hpp>
-#include <armnn/Types.hpp>
+#pragma once
+
+#include <iostream>
 
 namespace armnn
 {
-
-/// Performs the absolute function elementwise
-/// on the inputs to give the outputs.
-void Abs(Decoder<float>& in,
-         Encoder<float>& out,
-         const TensorInfo& tensorInfo);
+    template<typename T>
+struct abs : public std::unary_function<T, T>
+    {
+        T
+        operator () (const T&  inputData) const
+        {
+            return std::abs(inputData);
+        }
+    };
 
 } //namespace armnn