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https://github.com/IcedRooibos/py32f0-template.git
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188 lines
5.4 KiB
C
188 lines
5.4 KiB
C
/******************************************************************************
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* @file support_functions_f16.h
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* @brief Public header file for CMSIS DSP Library
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* @version V1.10.0
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* @date 08 July 2021
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* Target Processor: Cortex-M and Cortex-A cores
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******************************************************************************/
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/*
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* Copyright (c) 2010-2020 Arm Limited or its affiliates. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _SUPPORT_FUNCTIONS_F16_H_
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#define _SUPPORT_FUNCTIONS_F16_H_
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#include "arm_math_types_f16.h"
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#include "arm_math_memory.h"
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#include "dsp/none.h"
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#include "dsp/utils.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#if defined(ARM_FLOAT16_SUPPORTED)
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/**
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* @brief Copies the elements of a floating-point vector.
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* @param[in] pSrc input pointer
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* @param[out] pDst output pointer
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* @param[in] blockSize number of samples to process
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*/
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void arm_copy_f16(const float16_t * pSrc, float16_t * pDst, uint32_t blockSize);
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/**
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* @brief Fills a constant value into a floating-point vector.
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* @param[in] value input value to be filled
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* @param[out] pDst output pointer
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* @param[in] blockSize number of samples to process
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*/
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void arm_fill_f16(float16_t value, float16_t * pDst, uint32_t blockSize);
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/**
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* @brief Converts the elements of the floating-point vector to Q31 vector.
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* @param[in] pSrc points to the f16 input vector
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* @param[out] pDst points to the q15 output vector
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* @param[in] blockSize length of the input vector
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*/
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void arm_f16_to_q15(const float16_t * pSrc, q15_t * pDst, uint32_t blockSize);
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/**
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* @brief Converts the elements of the floating-point vector to Q31 vector.
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* @param[in] pSrc points to the q15 input vector
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* @param[out] pDst points to the f16 output vector
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* @param[in] blockSize length of the input vector
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*/
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void arm_q15_to_f16(const q15_t * pSrc, float16_t * pDst, uint32_t blockSize);
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/**
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* @brief Converts the elements of the floating-point vector to Q31 vector.
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* @param[in] pSrc points to the f32 input vector
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* @param[out] pDst points to the f16 output vector
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* @param[in] blockSize length of the input vector
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*/
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void arm_float_to_f16(const float32_t * pSrc, float16_t * pDst, uint32_t blockSize);
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/**
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* @brief Converts the elements of the floating-point vector to Q31 vector.
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* @param[in] pSrc points to the f16 input vector
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* @param[out] pDst points to the f32 output vector
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* @param[in] blockSize length of the input vector
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*/
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void arm_f16_to_float(const float16_t * pSrc, float32_t * pDst, uint32_t blockSize);
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/**
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* @brief Weighted sum
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*
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*
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* @param[in] *in Array of input values.
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* @param[in] *weigths Weights
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* @param[in] blockSize Number of samples in the input array.
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* @return Weighted sum
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*
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*/
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float16_t arm_weighted_sum_f16(const float16_t *in
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, const float16_t *weigths
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, uint32_t blockSize);
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/**
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* @brief Barycenter
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*
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*
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* @param[in] in List of vectors
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* @param[in] weights Weights of the vectors
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* @param[out] out Barycenter
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* @param[in] nbVectors Number of vectors
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* @param[in] vecDim Dimension of space (vector dimension)
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* @return None
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*
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*/
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void arm_barycenter_f16(const float16_t *in
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, const float16_t *weights
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, float16_t *out
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, uint32_t nbVectors
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, uint32_t vecDim);
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/**
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@ingroup groupSupport
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*/
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/**
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* @defgroup typecast Typecasting
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*/
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/**
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@addtogroup typecast
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@{
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*/
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/**
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* @brief Interpret a f16 as an s16 value
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* @param[in] x input value.
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* @return return value.
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*
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* @par Description
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* It is a typecast. No conversion of the float to int is done.
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* The memcpy will be optimized out by the compiler.
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* memcpy is used to prevent type punning issues.
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* With gcc, -fno-builtins MUST not be used or the
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* memcpy will not be optimized out.
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*/
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__STATIC_INLINE int16_t arm_typecast_s16_f16(float16_t x)
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{
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int16_t res;
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res=*(int16_t*)memcpy((char*)&res,(char*)&x,sizeof(float16_t));
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return(res);
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}
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/**
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* @brief Interpret an s16 as an f16 value
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* @param[in] x input value.
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* @return return value.
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*
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* @par Description
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* It is a typecast. No conversion of the int to float is done.
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* The memcpy will be optimized out by the compiler.
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* memcpy is used to prevent type punning issues.
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* With gcc, -fno-builtins MUST not be used or the
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* memcpy will not be optimized out.
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*/
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__STATIC_INLINE float16_t arm_typecast_f16_s16(int16_t x)
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{
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float16_t res;
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res=*(float16_t*)memcpy((char*)&res,(char*)&x,sizeof(int16_t));
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return(res);
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}
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/**
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@} end of typecast group
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*/
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#endif /*defined(ARM_FLOAT16_SUPPORTED)*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* ifndef _SUPPORT_FUNCTIONS_F16_H_ */
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