File size: 3,346 Bytes
25ade36 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | #include "edge-impulse-sdk/dsp/config.hpp"
#if EIDSP_LOAD_CMSIS_DSP_SOURCES
/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_weighted_sum_f16.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 "edge-impulse-sdk/CMSIS/DSP/Include/dsp/support_functions_f16.h"
#if defined(ARM_FLOAT16_SUPPORTED)
/**
@ingroup groupSupport
*/
/**
@defgroup weightedsum Weighted Sum
Weighted sum of values
*/
/**
* @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_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE)
#include "edge-impulse-sdk/CMSIS/DSP/Include/arm_helium_utils.h"
float16_t arm_weighted_sum_f16(const float16_t *in,const float16_t *weigths, uint32_t blockSize)
{
_Float16 accum1, accum2;
float16x8_t accum1V, accum2V;
float16x8_t inV, wV;
const float16_t *pIn, *pW;
uint32_t blkCnt;
pIn = in;
pW = weigths;
accum1V = vdupq_n_f16(0.0f16);
accum2V = vdupq_n_f16(0.0f16);
blkCnt = blockSize >> 3;
while (blkCnt > 0)
{
inV = vld1q(pIn);
wV = vld1q(pW);
pIn += 4;
pW += 4;
accum1V = vfmaq(accum1V, inV, wV);
accum2V = vaddq(accum2V, wV);
blkCnt--;
}
accum1 = vecAddAcrossF16Mve(accum1V);
accum2 = vecAddAcrossF16Mve(accum2V);
blkCnt = blockSize & 7;
while(blkCnt > 0)
{
accum1 += (_Float16)*pIn++ * (_Float16)*pW;
accum2 += (_Float16)*pW++;
blkCnt--;
}
return (accum1 / accum2);
}
#else
float16_t arm_weighted_sum_f16(const float16_t *in, const float16_t *weigths, uint32_t blockSize)
{
_Float16 accum1, accum2;
const float16_t *pIn, *pW;
uint32_t blkCnt;
pIn = in;
pW = weigths;
accum1=0.0f16;
accum2=0.0f16;
blkCnt = blockSize;
while(blkCnt > 0)
{
accum1 += (_Float16)*pIn++ * (_Float16)*pW;
accum2 += (_Float16)*pW++;
blkCnt--;
}
return(accum1 / accum2);
}
#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
/**
* @} end of weightedsum group
*/
#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */
#endif // EIDSP_LOAD_CMSIS_DSP_SOURCES
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