File size: 3,371 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 | #include "edge-impulse-sdk/dsp/config.hpp"
#if EIDSP_LOAD_CMSIS_DSP_SOURCES
/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_accumulate_f16.c
* Description: accumulation value of a floating-point vector
*
* $Date: 14 July 2022
* $Revision: V1.0.0
*
* 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 "edge-impulse-sdk/CMSIS/DSP/Include/dsp/statistics_functions_f16.h"
#if defined(ARM_FLOAT16_SUPPORTED)
/**
@ingroup groupStats
*/
/**
@defgroup Accumulation Accumulation functions
Calculates the accumulation of the input vector. Sum is defined as the addition of the elements in the vector.
The underlying algorithm is used:
<pre>
Result = (pSrc[0] + pSrc[1] + pSrc[2] + ... + pSrc[blockSize-1]);
</pre>
There are separate functions for floating-point, Q31, Q15, and Q7 data types.
*/
/**
@addtogroup Accumulation
@{
*/
/**
@brief accumulate 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 sum of values in input vector.
@return none
*/
void arm_accumulate_f16(
const float16_t * pSrc,
uint32_t blockSize,
float16_t * pResult)
{
uint32_t blkCnt; /* Loop counter */
float16_t sum = 0.0f16; /* Temporary result storage */
#if defined (ARM_MATH_LOOPUNROLL) && !defined(ARM_MATH_AUTOVECTORIZE)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
sum += (_Float16)*pSrc++;
sum += (_Float16)*pSrc++;
sum += (_Float16)*pSrc++;
sum += (_Float16)*pSrc++;
/* Decrement the loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
sum += (_Float16)*pSrc++;
/* Decrement loop counter */
blkCnt--;
}
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
/* Store result to destination */
*pResult = sum ;
}
#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
/**
@} end of Accumulation group
*/
#endif // EIDSP_LOAD_CMSIS_DSP_SOURCES
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