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diff --git a/libsensors/akmdfs/AKFS_APIs_8975/AKFS_VNorm.h b/libsensors/akmdfs/AKFS_APIs_8975/AKFS_VNorm.h
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+/******************************************************************************
+ *
+ * Copyright (C) 2012 Asahi Kasei Microdevices Corporation, Japan
+ *
+ * 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 AKFS_INC_VNORM_H
+#define AKFS_INC_VNORM_H
+
+#include "AKFS_Device.h"
+
+/***** Prototype of function **************************************************/
+AKLIB_C_API_START
+int16 AKFS_VbNorm(
+ const int16 ndata, /*!< Size of raw vector buffer */
+ const AKFVEC vdata[], /*!< Raw vector buffer */
+ const int16 nbuf, /*!< Size of data to be buffered */
+ const AKFVEC* o, /*!< Offset */
+ const AKFVEC* s, /*!< Sensitivity */
+ const AKFLOAT tgt, /*!< Target sensitivity */
+ const int16 nvec, /*!< Size of normalized vector buffer */
+ AKFVEC vvec[] /*!< Normalized vector buffer */
+);
+
+int16 AKFS_VbAve(
+ const int16 nvec, /*!< Size of normalized vector buffer */
+ const AKFVEC vvec[], /*!< Normalized vector buffer */
+ const int16 nave, /*!< Number of averaeg */
+ AKFVEC* vave /*!< Averaged vector */
+);
+
+AKLIB_C_API_END
+
+#endif
+