COMPMID-476 L2 Normalization for CL

Change-Id: I88f87173645880eb823916c5d4ac884c372a4fb4
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/83269
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
diff --git a/arm_compute/runtime/CL/functions/CLL2Normalize.h b/arm_compute/runtime/CL/functions/CLL2Normalize.h
new file mode 100644
index 0000000..52c562c
--- /dev/null
+++ b/arm_compute/runtime/CL/functions/CLL2Normalize.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_CLL2NORMALIZE_H__
+#define __ARM_COMPUTE_CLL2NORMALIZE_H__
+
+#include "arm_compute/core/CL/kernels/CLL2NormalizeKernel.h"
+#include "arm_compute/core/Types.h"
+#include "arm_compute/runtime/CL/CLTensor.h"
+#include "arm_compute/runtime/CL/ICLSimpleFunction.h"
+#include "arm_compute/runtime/CL/functions/CLReductionOperation.h"
+
+#include <cstdint>
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Perform reduction operation.
+ */
+class CLL2Normalize : public IFunction
+{
+public:
+    /** Constructor */
+    CLL2Normalize();
+
+    /** Set the input and output tensors.
+     *
+     * @param[in]  input   Source tensor. Data types supported: QS8, QS16, F32.
+     * @param[out] output  Destination tensor. Data types supported: Same as @p input.
+     * @param[in]  axis    Axis along which to reduce. Supported reduction axis : 0
+     * @param[in]  epsilon Lower bound value for the normalization.
+     */
+    void configure(ICLTensor *input, ICLTensor *output, unsigned int axis, float epsilon = 1e-12);
+
+    // Inherited methods overridden:
+    void run() override;
+
+private:
+    CLReductionOperation _reduce_func;
+    CLL2NormalizeKernel  _normalize_kernel;
+    CLTensor             _sumsq;
+};
+}
+#endif /*__ARM_COMPUTE_CLL2NORMALIZE_H__ */