text: /******************************************************************************
   * @file     support_functions_f16.h
   * @brief    Public header file for CMSIS DSP Library
   * @version  V1.9.0
   * @date     20. July 2020
   ******************************************************************************/
  /*
   * Copyright (c) 2010-2020 Arm Limited or its affiliates. All rights reserved.
   *
   * SPDX-License-Identifier: Apache-2.0
   *
   * 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
   *
   * 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 _SUPPORT_FUNCTIONS_F16_H_
  #define _SUPPORT_FUNCTIONS_F16_H_
  
  #include "third_party/cmsis/CMSIS/DSP/Include/arm_math_types_f16.h"
  #include "third_party/cmsis/CMSIS/DSP/Include/arm_math_memory.h"
  
  #include "third_party/cmsis/CMSIS/DSP/Include/dsp/none.h"
  #include "third_party/cmsis/CMSIS/DSP/Include/dsp/utils.h"
  
  #ifdef   __cplusplus
  extern "C"
  {
  #endif
  
  #if defined(ARM_FLOAT16_SUPPORTED)
  
    /**
     * @brief  Copies the elements of a floating-point vector.
     * @param[in]  pSrc       input pointer
     * @param[out] pDst       output pointer
     * @param[in]  blockSize  number of samples to process
     */
  void arm_copy_f16(const float16_t * pSrc, float16_t * pDst, uint32_t blockSize);
  
    /**
     * @brief  Fills a constant value into a floating-point vector.
     * @param[in]  value      input value to be filled
     * @param[out] pDst       output pointer
     * @param[in]  blockSize  number of samples to process
     */
  void arm_fill_f16(float16_t value, float16_t * pDst, uint32_t blockSize);
  
  /**
     * @brief Converts the elements of the floating-point vector to Q31 vector.
     * @param[in]  pSrc       points to the f16 input vector
     * @param[out] pDst       points to the q15 output vector
     * @param[in]  blockSize  length of the input vector
     */
  void arm_f16_to_q15(const float16_t * pSrc, q15_t * pDst, uint32_t blockSize);
  
  /**
     * @brief Converts the elements of the floating-point vector to Q31 vector.
     * @param[in]  pSrc       points to the q15 input vector
     * @param[out] pDst       points to the f16 output vector
     * @param[in]  blockSize  length of the input vector
     */
  void arm_q15_to_f16(const q15_t * pSrc, float16_t * pDst, uint32_t blockSize);
  
  
  /**
     * @brief Converts the elements of the floating-point vector to Q31 vector.
     * @param[in]  pSrc       points to the f32 input vector
     * @param[out] pDst       points to the f16 output vector
     * @param[in]  blockSize  length of the input vector
     */
  void arm_float_to_f16(const float32_t * pSrc, float16_t * pDst, uint32_t blockSize);
  
  /**
     * @brief Converts the elements of the floating-point vector to Q31 vector.
     * @param[in]  pSrc       points to the f16 input vector
     * @param[out] pDst       points to the f32 output vector
     * @param[in]  blockSize  length of the input vector
     */
  void arm_f16_to_float(const float16_t * pSrc, float32_t * pDst, uint32_t blockSize);
  
  /**
   * @brief Weighted sum
   *
   *
   * @param[in]    *in           Array of input values.
   * @param[in]    *weigths      Weights
   * @param[in]    blockSize     Number of samples in the input array.
   * @return Weighted sum
   *
   */
  float16_t arm_weighted_sum_f16(const float16_t *in
    , const float16_t *weigths
    , uint32_t blockSize);
  
  /**
   * @brief Barycenter
   *
   *
   * @param[in]    in         List of vectors
   * @param[in]    weights    Weights of the vectors
   * @param[out]   out        Barycenter
   * @param[in]    nbVectors  Number of vectors
   * @param[in]    vecDim     Dimension of space (vector dimension)
   * @return       None
   *
   */
  void arm_barycenter_f16(const float16_t *in
    , const float16_t *weights
    , float16_t *out
    , uint32_t nbVectors
    , uint32_t vecDim);
  
  #endif /*defined(ARM_FLOAT16_SUPPORTED)*/
  #ifdef   __cplusplus
  }
  #endif
  
  #endif /* ifndef _SUPPORT_FUNCTIONS_F16_H_ */
  