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/******************************************************************************
* @file statistics_functions_f16.h
* @brief Public header file for CMSIS DSP Library
* @version V1.10.0
* @date 08 July 2021
* Target Processor: Cortex-M and Cortex-A cores
******************************************************************************/
/*
* 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 _STATISTICS_FUNCTIONS_F16_H_
#define _STATISTICS_FUNCTIONS_F16_H_
#include "arm_math_types_f16.h"
#include "arm_math_memory.h"
#include "dsp/none.h"
#include "dsp/utils.h"
#include "dsp/basic_math_functions_f16.h"
#include "dsp/fast_math_functions_f16.h"
#ifdef __cplusplus
extern "C"
{
#endif
#if defined(ARM_FLOAT16_SUPPORTED)
/**
* @brief Sum of the squares of the elements of a floating-point vector.
* @param[in] pSrc is input pointer
* @param[in] blockSize is the number of samples to process
* @param[out] pResult is output value.
*/
void arm_power_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult);
/**
* @brief Mean value of a floating-point vector.
* @param[in] pSrc is input pointer
* @param[in] blockSize is the number of samples to process
* @param[out] pResult is output value.
*/
void arm_mean_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult);
/**
* @brief Variance of the elements of a floating-point vector.
* @param[in] pSrc is input pointer
* @param[in] blockSize is the number of samples to process
* @param[out] pResult is output value.
*/
void arm_var_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult);
/**
* @brief Root Mean Square of the elements of a floating-point vector.
* @param[in] pSrc is input pointer
* @param[in] blockSize is the number of samples to process
* @param[out] pResult is output value.
*/
void arm_rms_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult);
/**
* @brief Standard deviation of the elements of a floating-point vector.
* @param[in] pSrc is input pointer
* @param[in] blockSize is the number of samples to process
* @param[out] pResult is output value.
*/
void arm_std_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult);
/**
* @brief Minimum value of a floating-point vector.
* @param[in] pSrc is input pointer
* @param[in] blockSize is the number of samples to process
* @param[out] pResult is output pointer
* @param[out] pIndex is the array index of the minimum value in the input buffer.
*/
void arm_min_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult,
uint32_t * pIndex);
/**
* @brief Minimum value of absolute values of a floating-point vector.
* @param[in] pSrc is input pointer
* @param[in] blockSize is the number of samples to process
* @param[out] pResult is output pointer
* @param[out] pIndex is the array index of the minimum value in the input buffer.
*/
void arm_absmin_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult,
uint32_t * pIndex);
/**
* @brief Maximum value of a floating-point vector.
* @param[in] pSrc points to the input buffer
* @param[in] blockSize length of the input vector
* @param[out] pResult maximum value returned here
* @param[out] pIndex index of maximum value returned here
*/
void arm_max_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult,
uint32_t * pIndex);
/**
* @brief Maximum value of absolute values of a floating-point vector.
* @param[in] pSrc points to the input buffer
* @param[in] blockSize length of the input vector
* @param[out] pResult maximum value returned here
* @param[out] pIndex index of maximum value returned here
*/
void arm_absmax_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult,
uint32_t * pIndex);
/**
* @brief Minimum value of absolute values of a floating-point vector.
* @param[in] pSrc is input pointer
* @param[in] blockSize is the number of samples to process
* @param[out] pResult is output pointer
*/
void arm_absmin_no_idx_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult);
/**
* @brief Maximum value of a floating-point vector.
* @param[in] pSrc points to the input buffer
* @param[in] blockSize length of the input vector
* @param[out] pResult maximum value returned here
*/
void arm_absmax_no_idx_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult);
/**
* @brief Entropy
*
* @param[in] pSrcA Array of input values.
* @param[in] blockSize Number of samples in the input array.
* @return Entropy -Sum(p ln p)
*
*/
float16_t arm_entropy_f16(const float16_t * pSrcA,uint32_t blockSize);
float16_t arm_logsumexp_f16(const float16_t *in, uint32_t blockSize);
/**
* @brief Dot product with log arithmetic
*
* Vectors are containing the log of the samples
*
* @param[in] pSrcA points to the first input vector
* @param[in] pSrcB points to the second input vector
* @param[in] blockSize number of samples in each vector
* @param[in] pTmpBuffer temporary buffer of length blockSize
* @return The log of the dot product .
*
*/
float16_t arm_logsumexp_dot_prod_f16(const float16_t * pSrcA,
const float16_t * pSrcB,
uint32_t blockSize,
float16_t *pTmpBuffer);
/**
* @brief Kullback-Leibler
*
* @param[in] pSrcA Pointer to an array of input values for probability distribution A.
* @param[in] pSrcB Pointer to an array of input values for probability distribution B.
* @param[in] blockSize Number of samples in the input array.
* @return Kullback-Leibler Divergence D(A || B)
*
*/
float16_t arm_kullback_leibler_f16(const float16_t * pSrcA
,const float16_t * pSrcB
,uint32_t blockSize);
/**
@brief Maximum value of a floating-point vector.
@param[in] pSrc points to the input vector
@param[in] blockSize number of samples in input vector
@param[out] pResult maximum value returned here
@return none
*/
void arm_max_no_idx_f16(
const float16_t *pSrc,
uint32_t blockSize,
float16_t *pResult);
/**
@brief Minimum value of a floating-point vector.
@param[in] pSrc points to the input vector
@param[in] blockSize number of samples in input vector
@param[out] pResult minimum value returned here
@return none
*/
void arm_min_no_idx_f16(
const float16_t *pSrc,
uint32_t blockSize,
float16_t *pResult);
/**
@brief Mean square error between two half precision float vectors.
@param[in] pSrcA points to the first input vector
@param[in] pSrcB points to the second input vector
@param[in] blockSize number of samples in input vector
@param[out] pResult mean square error
@return none
*/
void arm_mse_f16(
const float16_t * pSrcA,
const float16_t * pSrcB,
uint32_t blockSize,
float16_t * pResult);
#endif /*defined(ARM_FLOAT16_SUPPORTED)*/
#ifdef __cplusplus
}
#endif
#endif /* ifndef _STATISTICS_FUNCTIONS_F16_H_ */
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