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147 lines
3.1 KiB
C
147 lines
3.1 KiB
C
/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_weighted_sum_f16.c
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* Description: Weighted Sum
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*
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* $Date: 23 April 2021
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* $Revision: V1.9.0
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*
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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) 2010-2021 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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#include <limits.h>
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#include <math.h>
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#include "dsp/support_functions_f16.h"
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#if defined(ARM_FLOAT16_SUPPORTED)
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/**
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@ingroup groupSupport
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*/
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/**
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@defgroup weightedsum Weighted Sum
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Weighted sum of values
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*/
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/**
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* @addtogroup weightedsum
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* @{
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*/
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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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#if defined(ARM_MATH_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE)
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#include "arm_helium_utils.h"
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float16_t arm_weighted_sum_f16(const float16_t *in,const float16_t *weigths, uint32_t blockSize)
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{
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_Float16 accum1, accum2;
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float16x8_t accum1V, accum2V;
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float16x8_t inV, wV;
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const float16_t *pIn, *pW;
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uint32_t blkCnt;
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pIn = in;
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pW = weigths;
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accum1V = vdupq_n_f16(0.0f16);
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accum2V = vdupq_n_f16(0.0f16);
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blkCnt = blockSize >> 3;
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while (blkCnt > 0)
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{
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inV = vld1q(pIn);
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wV = vld1q(pW);
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pIn += 4;
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pW += 4;
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accum1V = vfmaq(accum1V, inV, wV);
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accum2V = vaddq(accum2V, wV);
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blkCnt--;
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}
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accum1 = vecAddAcrossF16Mve(accum1V);
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accum2 = vecAddAcrossF16Mve(accum2V);
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blkCnt = blockSize & 7;
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while(blkCnt > 0)
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{
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accum1 += (_Float16)*pIn++ * (_Float16)*pW;
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accum2 += (_Float16)*pW++;
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blkCnt--;
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}
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return (accum1 / accum2);
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}
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#else
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float16_t arm_weighted_sum_f16(const float16_t *in, const float16_t *weigths, uint32_t blockSize)
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{
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_Float16 accum1, accum2;
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const float16_t *pIn, *pW;
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uint32_t blkCnt;
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pIn = in;
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pW = weigths;
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accum1=0.0f16;
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accum2=0.0f16;
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blkCnt = blockSize;
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while(blkCnt > 0)
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{
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accum1 += (_Float16)*pIn++ * (_Float16)*pW;
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accum2 += (_Float16)*pW++;
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blkCnt--;
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}
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return(accum1 / accum2);
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}
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#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
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/**
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* @} end of weightedsum group
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*/
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#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */
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