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diff --git a/libs/ARMComputeEx/arm_compute/runtime/CL/functions/CLReduceMax.h b/libs/ARMComputeEx/arm_compute/runtime/CL/functions/CLReduceMax.h
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+++ b/libs/ARMComputeEx/arm_compute/runtime/CL/functions/CLReduceMax.h
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+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ * Copyright (c) 2017 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_CLREDUCE_MAX_H__
+#define __ARM_COMPUTE_CLREDUCE_MAX_H__
+
+#include "arm_compute/runtime/CL/CLArray.h"
+#include "arm_compute/runtime/IFunction.h"
+#include "arm_compute/core/Types.h"
+#include "arm_compute/core/CL/ICLKernel.h"
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Basic function to execute TopK operation. This function calls the following OpenCL kernels:
+ *
+ * -# @ref CLTopKV2Kernel
+ */
+class CLReduceMax : public IFunction
+{
+public:
+  /** Constructor */
+  CLReduceMax();
+  /** Prevent instances of this class from being copied (As this class contains pointers) */
+  CLReduceMax(const CLReduceMax &) = delete;
+  /** Prevent instances of this class from being copied (As this class contains pointers) */
+  CLReduceMax &operator=(const CLReduceMax &) = delete;
+  /** Allow instances of this class to be moved */
+  CLReduceMax(CLReduceMax &&) = default;
+  /** Allow instances of this class to be moved */
+  CLReduceMax &operator=(CLReduceMax &&) = default;
+  /** Initialise the kernel's inputs and outputs.
+   *
+   * @note When locations of min and max occurrences are requested, the reported number of locations
+   * is limited to the given array size.
+   *
+   * @param[in]  input     Input image. Data types supported: F32
+   * @param[in]  axis      Axis to reduce. Data type supported: S32
+   * @param[out] output    indices related to top k values. Data types supported: F32.
+   */
+  void configure(ICLTensor *input, int32_t axis, ICLTensor *output);
+  /** Static function to check if given info will lead to a valid configuration of @ref
+   * CLPixelWiseDivision
+   *
+   * @param[in]  input     Input image. Data types supported: F32
+   * @param[in]  axis      Axis to reduce. Data type supported: S32
+   * @param[out] output    indices related to top k values. Data types supported: F32.     *
+   *
+   * @return a status
+   */
+  static Status validate(const ITensorInfo *input, int32_t axis, const ITensorInfo *output);
+
+  // Inherited methods overridden:
+  void run() override;
+
+private:
+  void run_on_cpu();
+
+  int32_t _axis;
+
+  ICLTensor *_input;
+  ICLTensor *_output;
+
+  std::unique_ptr<ICLKernel> _kernel;
+};
+}
+#endif /*__ARM_COMPUTE_CLREDUCE_MAX_H__ */