You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
188 lines
4.0 KiB
C
188 lines
4.0 KiB
C
/* ----------------------------------------------------------------------
|
|
* Project: CMSIS DSP Library
|
|
* Title: arm_weighted_sum_f32.c
|
|
* Description: Weighted Sum
|
|
*
|
|
* $Date: 23 April 2021
|
|
* $Revision: V1.9.0
|
|
*
|
|
* Target Processor: Cortex-M and Cortex-A cores
|
|
* -------------------------------------------------------------------- */
|
|
/*
|
|
* Copyright (C) 2010-2021 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.
|
|
*/
|
|
|
|
#include <limits.h>
|
|
#include <math.h>
|
|
|
|
#include "dsp/support_functions.h"
|
|
|
|
/**
|
|
* @addtogroup weightedsum
|
|
* @{
|
|
*/
|
|
|
|
|
|
/**
|
|
* @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
|
|
*
|
|
*/
|
|
|
|
#if defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE)
|
|
|
|
#include "arm_helium_utils.h"
|
|
|
|
float32_t arm_weighted_sum_f32(const float32_t *in,const float32_t *weigths, uint32_t blockSize)
|
|
{
|
|
float32_t accum1, accum2;
|
|
f32x4_t accum1V, accum2V;
|
|
f32x4_t inV, wV;
|
|
const float32_t *pIn, *pW;
|
|
uint32_t blkCnt;
|
|
|
|
|
|
pIn = in;
|
|
pW = weigths;
|
|
|
|
|
|
accum1V = vdupq_n_f32(0.0);
|
|
accum2V = vdupq_n_f32(0.0);
|
|
|
|
blkCnt = blockSize >> 2;
|
|
while (blkCnt > 0)
|
|
{
|
|
inV = vld1q(pIn);
|
|
wV = vld1q(pW);
|
|
|
|
pIn += 4;
|
|
pW += 4;
|
|
|
|
accum1V = vfmaq(accum1V, inV, wV);
|
|
accum2V = vaddq(accum2V, wV);
|
|
blkCnt--;
|
|
}
|
|
|
|
accum1 = vecAddAcrossF32Mve(accum1V);
|
|
accum2 = vecAddAcrossF32Mve(accum2V);
|
|
|
|
blkCnt = blockSize & 3;
|
|
while(blkCnt > 0)
|
|
{
|
|
accum1 += *pIn++ * *pW;
|
|
accum2 += *pW++;
|
|
blkCnt--;
|
|
}
|
|
|
|
|
|
return (accum1 / accum2);
|
|
}
|
|
|
|
#else
|
|
#if defined(ARM_MATH_NEON)
|
|
|
|
#include "NEMath.h"
|
|
float32_t arm_weighted_sum_f32(const float32_t *in,const float32_t *weigths, uint32_t blockSize)
|
|
{
|
|
|
|
float32_t accum1, accum2;
|
|
float32x4_t accum1V, accum2V;
|
|
float32x2_t tempV;
|
|
|
|
float32x4_t inV,wV;
|
|
|
|
const float32_t *pIn, *pW;
|
|
uint32_t blkCnt;
|
|
|
|
|
|
pIn = in;
|
|
pW = weigths;
|
|
|
|
accum1=0.0f;
|
|
accum2=0.0f;
|
|
|
|
accum1V = vdupq_n_f32(0.0f);
|
|
accum2V = vdupq_n_f32(0.0f);
|
|
|
|
blkCnt = blockSize >> 2;
|
|
while(blkCnt > 0)
|
|
{
|
|
inV = vld1q_f32(pIn);
|
|
wV = vld1q_f32(pW);
|
|
|
|
pIn += 4;
|
|
pW += 4;
|
|
|
|
accum1V = vmlaq_f32(accum1V,inV,wV);
|
|
accum2V = vaddq_f32(accum2V,wV);
|
|
blkCnt--;
|
|
}
|
|
|
|
tempV = vpadd_f32(vget_low_f32(accum1V),vget_high_f32(accum1V));
|
|
accum1 = vget_lane_f32(tempV, 0) + vget_lane_f32(tempV, 1);
|
|
|
|
tempV = vpadd_f32(vget_low_f32(accum2V),vget_high_f32(accum2V));
|
|
accum2 = vget_lane_f32(tempV, 0) + vget_lane_f32(tempV, 1);
|
|
|
|
blkCnt = blockSize & 3;
|
|
while(blkCnt > 0)
|
|
{
|
|
accum1 += *pIn++ * *pW;
|
|
accum2 += *pW++;
|
|
blkCnt--;
|
|
}
|
|
|
|
|
|
return(accum1 / accum2);
|
|
}
|
|
#else
|
|
float32_t arm_weighted_sum_f32(const float32_t *in, const float32_t *weigths, uint32_t blockSize)
|
|
{
|
|
|
|
float32_t accum1, accum2;
|
|
const float32_t *pIn, *pW;
|
|
uint32_t blkCnt;
|
|
|
|
|
|
pIn = in;
|
|
pW = weigths;
|
|
|
|
accum1=0.0f;
|
|
accum2=0.0f;
|
|
|
|
blkCnt = blockSize;
|
|
while(blkCnt > 0)
|
|
{
|
|
accum1 += *pIn++ * *pW;
|
|
accum2 += *pW++;
|
|
blkCnt--;
|
|
}
|
|
|
|
return(accum1 / accum2);
|
|
}
|
|
#endif
|
|
#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
|
|
|
|
/**
|
|
* @} end of weightedsum group
|
|
*/
|