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diff --git a/libs/ARMComputeEx/arm_compute/core/CL/kernels/CLArithmeticSubtractionExKernel.h b/libs/ARMComputeEx/arm_compute/core/CL/kernels/CLArithmeticSubtractionExKernel.h
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index 000000000..9a765f310
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+++ b/libs/ARMComputeEx/arm_compute/core/CL/kernels/CLArithmeticSubtractionExKernel.h
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+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ * Copyright (c) 2016-2018 ARM Limited.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __ARM_COMPUTE_CLARITHMETICSUBTRACTIONEXKERNEL_H__
+#define __ARM_COMPUTE_CLARITHMETICSUBTRACTIONEXKERNEL_H__
+
+#include "arm_compute/core/CL/ICLKernel.h"
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Interface for the arithmetic subtraction kernel (support broadcasting)
+ *
+ * Arithmetic subtraction is computed by:
+ * @f[ output(x,y) = input1(x,y) - input2(x,y) @f]
+ */
+class CLArithmeticSubtractionExKernel : public ICLKernel
+{
+public:
+  /** Default constructor */
+  CLArithmeticSubtractionExKernel();
+  /** Prevent instances of this class from being copied (As this class contains pointers) */
+  CLArithmeticSubtractionExKernel(const CLArithmeticSubtractionExKernel &) = delete;
+  /** Prevent instances of this class from being copied (As this class contains pointers) */
+  CLArithmeticSubtractionExKernel &operator=(const CLArithmeticSubtractionExKernel &) = delete;
+  /** Allow instances of this class to be moved */
+  CLArithmeticSubtractionExKernel(CLArithmeticSubtractionExKernel &&) = default;
+  /** Allow instances of this class to be moved */
+  CLArithmeticSubtractionExKernel &operator=(CLArithmeticSubtractionExKernel &&) = default;
+  /** Default destructor */
+  ~CLArithmeticSubtractionExKernel() = default;
+
+  /** Initialise the kernel's inputs, output and convertion policy.
+   *
+   * @param[in]  input1 First tensor input. Data types supported: U8/S16/F16/F32.
+   * @param[in]  input2 Second tensor input. Data types supported: U8/S16/F16/F32.
+   * @param[out] output Output tensor. Data types supported: U8 (Only if both inputs are U8),
+   * S16/F16/F32.
+   * @param[in]  policy Policy to use to handle overflow.
+   */
+  void configure(const ICLTensor *input1, const ICLTensor *input2, ICLTensor *output,
+                 ConvertPolicy policy);
+  /** Static function to check if given info will lead to a valid configuration of @ref
+   * CLArithmeticSubtractionExKernel
+   *
+   * @param[in] input1 First tensor input info. Data types supported: U8/S16/F16/F32.
+   * @param[in] input2 Second tensor input info. Data types supported: U8/S16/F16/F32.
+   * @param[in] output Output tensor info. Data types supported: U8 (Only if both inputs are U8),
+   * S16/F16/F32.
+   * @param[in] policy Policy to use to handle overflow.
+   *
+   * @return a status
+   */
+  static Status validate(const ITensorInfo *input1, const ITensorInfo *input2,
+                         const ITensorInfo *output, ConvertPolicy policy);
+
+  // Inherited methods overridden:
+  void run(const Window &window, cl::CommandQueue &queue) override;
+  BorderSize border_size() const override;
+
+private:
+  const ICLTensor *_input1; /**< Source tensor 1 */
+  const ICLTensor *_input2; /**< Source tensor 2 */
+  ICLTensor *_output;       /**< Destination tensor */
+};
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_CLARITHMETICSUBTRACTIONEXKERNEL_H__ */