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Silfurion
3 years ago
parent
6f0f63a3be
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/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_accumulate_f16.c
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* Description: accumulation value of a floating-point vector
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*
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* $Date: 14 July 2022
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* $Revision: V1.0.0
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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 "dsp/statistics_functions_f16.h"
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#if defined(ARM_FLOAT16_SUPPORTED)
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/**
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@ingroup groupStats
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*/
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/**
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@defgroup Accumulation
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Calculates the accumulation of the input vector. Sum is defined as the addition of the elements in the vector.
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The underlying algorithm is used:
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<pre>
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Result = (pSrc[0] + pSrc[1] + pSrc[2] + ... + pSrc[blockSize-1]);
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</pre>
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There are separate functions for floating-point, Q31, Q15, and Q7 data types.
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*/
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/**
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@addtogroup Accumulation
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@{
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*/
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/**
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@brief accumulate value of a floating-point vector.
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@param[in] pSrc points to the input vector.
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@param[in] blockSize number of samples in input vector.
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@param[out] pResult sum value returned here.
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@return none
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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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void arm_accumulate_f16(
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const float16_t * pSrc,
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uint32_t blockSize,
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float16_t * pResult)
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{
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int32_t blkCnt; /* loop counters */
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f16x8_t vecSrc;
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f16x8_t sumVec = vdupq_n_f16(0.0f16);
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blkCnt = blockSize;
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do {
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mve_pred16_t p = vctp16q(blkCnt);
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vecSrc = vldrhq_z_f16((float16_t const *) pSrc, p);
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sumVec = vaddq_m_f16(sumVec, sumVec, vecSrc, p);
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blkCnt -= 8;
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pSrc += 8;
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}
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while (blkCnt > 0);
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*pResult = vecAddAcrossF16Mve(sumVec);
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}
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#else
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void arm_accumulate_f16(
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const float16_t * pSrc,
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uint32_t blockSize,
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float16_t * pResult)
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{
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uint32_t blkCnt; /* Loop counter */
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float16_t sum = 0.0f; /* Temporary result storage */
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#if defined (ARM_MATH_LOOPUNROLL) && !defined(ARM_MATH_AUTOVECTORIZE)
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/* Loop unrolling: Compute 4 outputs at a time */
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blkCnt = blockSize >> 2U;
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while (blkCnt > 0U)
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{
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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sum += (_Float16)*pSrc++;
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sum += (_Float16)*pSrc++;
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sum += (_Float16)*pSrc++;
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sum += (_Float16)*pSrc++;
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/* Decrement the loop counter */
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blkCnt--;
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}
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/* Loop unrolling: Compute remaining outputs */
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blkCnt = blockSize % 0x4U;
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#else
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/* Initialize blkCnt with number of samples */
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blkCnt = blockSize;
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#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
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while (blkCnt > 0U)
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{
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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sum += (_Float16)*pSrc++;
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/* Decrement loop counter */
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blkCnt--;
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}
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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/* Store result to destination */
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*pResult = sum ;
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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 Accumulation group
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*/
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#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */
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@ -0,0 +1,198 @@
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/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_accumulate_f32.c
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* Description: Sum value of a floating-point vector
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*
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* $Date: 14 July 2022
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* $Revision: V1.0.0
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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 "dsp/statistics_functions.h"
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/**
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@ingroup groupStats
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*/
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/**
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@addtogroup Accumulation
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@{
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*/
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/**
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@brief Accumulation value of a floating-point vector.
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@param[in] pSrc points to the input vector.
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@param[in] blockSize number of samples in input vector.
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@param[out] pResult sum value returned here.
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@return none
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*/
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#if defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE)
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#include "arm_helium_utils.h"
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void arm_accumulate_f32(
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const float32_t * pSrc,
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uint32_t blockSize,
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float32_t * pResult)
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{
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uint32_t blkCnt; /* loop counters */
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f32x4_t vecSrc;
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f32x4_t sumVec = vdupq_n_f32(0.0f);
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float32_t sum = 0.0f;
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/* Compute 4 outputs at a time */
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blkCnt = blockSize >> 2U;
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while (blkCnt > 0U)
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{
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vecSrc = vldrwq_f32(pSrc);
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sumVec = vaddq_f32(sumVec, vecSrc);
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blkCnt --;
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pSrc += 4;
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}
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sum = vecAddAcrossF32Mve(sumVec);
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/* Tail */
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blkCnt = blockSize & 0x3;
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while (blkCnt > 0U)
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{
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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sum += *pSrc++;
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/* Decrement loop counter */
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blkCnt--;
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}
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*pResult = sum;
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}
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#else
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#if defined(ARM_MATH_NEON_EXPERIMENTAL) && !defined(ARM_MATH_AUTOVECTORIZE)
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void arm_accumulate_f32(
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const float32_t * pSrc,
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uint32_t blockSize,
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float32_t * pResult)
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{
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float32_t sum = 0.0f; /* Temporary result storage */
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float32x4_t sumV = vdupq_n_f32(0.0f); /* Temporary result storage */
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float32x2_t sumV2;
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uint32_t blkCnt; /* Loop counter */
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float32x4_t inV;
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blkCnt = blockSize >> 2U;
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/* Compute 4 outputs at a time.
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** a second loop below computes the remaining 1 to 3 samples. */
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while (blkCnt > 0U)
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{
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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inV = vld1q_f32(pSrc);
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sumV = vaddq_f32(sumV, inV);
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pSrc += 4;
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/* Decrement the loop counter */
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blkCnt--;
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}
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sumV2 = vpadd_f32(vget_low_f32(sumV),vget_high_f32(sumV));
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sum = vget_lane_f32(sumV2, 0) + vget_lane_f32(sumV2, 1);
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/* If the blockSize is not a multiple of 4, compute any remaining output samples here.
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** No loop unrolling is used. */
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blkCnt = blockSize & 3;
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while (blkCnt > 0U)
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{
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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sum += *pSrc++;
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/* Decrement the loop counter */
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blkCnt--;
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}
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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/* Store the result to the destination */
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*pResult = sum;
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}
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#else
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void arm_accumulate_f32(
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const float32_t * pSrc,
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uint32_t blockSize,
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float32_t * pResult)
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{
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uint32_t blkCnt; /* Loop counter */
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float32_t sum = 0.0f; /* Temporary result storage */
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#if defined (ARM_MATH_LOOPUNROLL) && !defined(ARM_MATH_AUTOVECTORIZE)
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/* Loop unrolling: Compute 4 outputs at a time */
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blkCnt = blockSize >> 2U;
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while (blkCnt > 0U)
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{
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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sum += *pSrc++;
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sum += *pSrc++;
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sum += *pSrc++;
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sum += *pSrc++;
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/* Decrement the loop counter */
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blkCnt--;
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}
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/* Loop unrolling: Compute remaining outputs */
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blkCnt = blockSize % 0x4U;
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#else
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/* Initialize blkCnt with number of samples */
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blkCnt = blockSize;
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#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
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while (blkCnt > 0U)
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{
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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sum += *pSrc++;
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/* Decrement loop counter */
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blkCnt--;
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}
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/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
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/* Store result to destination */
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*pResult = sum ;
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}
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#endif /* #if defined(ARM_MATH_NEON) */
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#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
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/**
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@} end of Accumulation group
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*/
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@ -0,0 +1,127 @@
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/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_accumulate_f64.c
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* Description: Accumulation value of a floating-point vector
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*
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* $Date: 14 July 2022
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* $Revision: V1.0.0
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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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|
* 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 "dsp/basic_math_functions.h"
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/**
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@ingroup groupStats
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*/
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/**
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@addtogroup Accumulation
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@{
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*/
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/**
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@brief Accumulation value of a floating-point vector.
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@param[in] pSrc points to the input vector.
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@param[in] blockSize number of samples in input vector.
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@param[out] pResult sum value returned here.
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@return none
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*/
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#if defined(ARM_MATH_NEON)
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void arm_accumulate_f64(
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const float64_t * pSrc,
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uint32_t blockSize,
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float64_t * pResult)
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{
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uint32_t blkCnt; /* Loop counter */
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/*Neon buffers*/
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float64x2_t vSum = vdupq_n_f64(0.0f);
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float64x2_t afterLoad ;
|
||||||
|
|
||||||
|
float64_t sum = 0.; /* Temporary result storage */
|
||||||
|
|
||||||
|
/* Initialize blkCnt with number of samples */
|
||||||
|
blkCnt = blockSize >> 1U;
|
||||||
|
|
||||||
|
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
|
||||||
|
afterLoad = vld1q_f64(pSrc);
|
||||||
|
vSum = vaddq_f64(vSum, afterLoad);
|
||||||
|
|
||||||
|
/* Decrement loop counter */
|
||||||
|
blkCnt--;
|
||||||
|
|
||||||
|
pSrc += 2;
|
||||||
|
}
|
||||||
|
sum = vaddvq_f64(vSum);
|
||||||
|
|
||||||
|
/* Tail */
|
||||||
|
blkCnt = blockSize & 1 ;
|
||||||
|
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
sum += *pSrc++;
|
||||||
|
|
||||||
|
/* Decrement loop counter */
|
||||||
|
blkCnt--;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
/* Store result to destination */
|
||||||
|
*pResult = sum;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
void arm_accumulate_f64(
|
||||||
|
const float64_t * pSrc,
|
||||||
|
uint32_t blockSize,
|
||||||
|
float64_t * pResult)
|
||||||
|
{
|
||||||
|
uint32_t blkCnt; /* Loop counter */
|
||||||
|
float64_t sum = 0.; /* Temporary result storage */
|
||||||
|
|
||||||
|
/* Initialize blkCnt with number of samples */
|
||||||
|
blkCnt = blockSize;
|
||||||
|
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
sum += *pSrc++;
|
||||||
|
|
||||||
|
/* Decrement loop counter */
|
||||||
|
blkCnt--;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
/* Store result to destination */
|
||||||
|
*pResult = sum;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@} end of Accumulation group
|
||||||
|
*/
|
||||||
@ -0,0 +1,156 @@
|
|||||||
|
/* ----------------------------------------------------------------------
|
||||||
|
* Project: CMSIS DSP Library
|
||||||
|
* Title: arm_accumulate_q15.c
|
||||||
|
* Description: Accumulation value of a Q15 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 "dsp/statistics_functions.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
@ingroup groupStats
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@addtogroup Accumulation
|
||||||
|
@{
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Accumulation value of a Q15 vector.
|
||||||
|
@param[in] pSrc points to the input vector
|
||||||
|
@param[in] blockSize number of samples in input vector
|
||||||
|
@param[out] pResult sum value returned here
|
||||||
|
@return none
|
||||||
|
|
||||||
|
@par Scaling and Overflow Behavior
|
||||||
|
The function is implemented using a 32-bit internal accumulator.
|
||||||
|
The input is represented in 1.15 format and is accumulated in a 32-bit
|
||||||
|
accumulator in 17.15 format.
|
||||||
|
There is no risk of internal overflow with this approach, and the
|
||||||
|
full precision of intermediate result is preserved.
|
||||||
|
Finally, the accumulator is truncated to yield a result of 1.15 format.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE)
|
||||||
|
void arm_accumulate_q15(
|
||||||
|
const q15_t * pSrc,
|
||||||
|
uint32_t blockSize,
|
||||||
|
q15_t * pResult)
|
||||||
|
{
|
||||||
|
uint32_t blkCnt; /* loop counters */
|
||||||
|
q15x8_t vecSrc;
|
||||||
|
q31_t sum = 0L;
|
||||||
|
|
||||||
|
/* Compute 8 outputs at a time */
|
||||||
|
blkCnt = blockSize >> 3U;
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
vecSrc = vldrhq_s16(pSrc);
|
||||||
|
/*
|
||||||
|
* sum lanes
|
||||||
|
*/
|
||||||
|
sum = vaddvaq(sum, vecSrc);
|
||||||
|
|
||||||
|
blkCnt--;
|
||||||
|
pSrc += 8;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Tail */
|
||||||
|
blkCnt = blockSize & 0x7;
|
||||||
|
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
sum += *pSrc++;
|
||||||
|
|
||||||
|
/* Decrement loop counter */
|
||||||
|
blkCnt--;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
/* Store the result to the destination */
|
||||||
|
*pResult = sum;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
void arm_accumulate_q15(
|
||||||
|
const q15_t * pSrc,
|
||||||
|
uint32_t blockSize,
|
||||||
|
q15_t * pResult)
|
||||||
|
{
|
||||||
|
uint32_t blkCnt; /* Loop counter */
|
||||||
|
q31_t sum = 0; /* Temporary result storage */
|
||||||
|
|
||||||
|
#if defined (ARM_MATH_LOOPUNROLL)
|
||||||
|
q31_t in;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined (ARM_MATH_LOOPUNROLL)
|
||||||
|
|
||||||
|
/* Loop unrolling: Compute 4 outputs at a time */
|
||||||
|
blkCnt = blockSize >> 2U;
|
||||||
|
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
in = read_q15x2_ia (&pSrc);
|
||||||
|
sum += ((in << 16U) >> 16U);
|
||||||
|
sum += (in >> 16U);
|
||||||
|
|
||||||
|
in = read_q15x2_ia (&pSrc);
|
||||||
|
sum += ((in << 16U) >> 16U);
|
||||||
|
sum += (in >> 16U);
|
||||||
|
|
||||||
|
/* 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 += *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_MVEI) */
|
||||||
|
|
||||||
|
/**
|
||||||
|
@} end of Accumulation group
|
||||||
|
*/
|
||||||
@ -0,0 +1,149 @@
|
|||||||
|
/* ----------------------------------------------------------------------
|
||||||
|
* Project: CMSIS DSP Library
|
||||||
|
* Title: arm_accumulate_q31.c
|
||||||
|
* Description: Accumulation value of a Q31 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 "dsp/statistics_functions.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
@ingroup groupStats
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@addtogroup Accumulation
|
||||||
|
@{
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Accumulation value of a Q31 vector.
|
||||||
|
@param[in] pSrc points to the input vector
|
||||||
|
@param[in] blockSize number of samples in input vector
|
||||||
|
@param[out] pResult sum value returned here
|
||||||
|
@return none
|
||||||
|
|
||||||
|
@par Scaling and Overflow Behavior
|
||||||
|
The function is implemented using a 64-bit internal accumulator.
|
||||||
|
The input is represented in 1.31 format and is accumulated in a 64-bit
|
||||||
|
accumulator in 33.31 format.
|
||||||
|
There is no risk of internal overflow with this approach, and the
|
||||||
|
full precision of intermediate result is preserved.
|
||||||
|
Finally, the accumulator is truncated to yield a result of 1.31 format.
|
||||||
|
*/
|
||||||
|
#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE)
|
||||||
|
void arm_accumulate_q31(
|
||||||
|
const q31_t * pSrc,
|
||||||
|
uint32_t blockSize,
|
||||||
|
q31_t * pResult)
|
||||||
|
{
|
||||||
|
uint32_t blkCnt; /* loop counters */
|
||||||
|
q31x4_t vecSrc;
|
||||||
|
q63_t sum = 0LL;
|
||||||
|
|
||||||
|
|
||||||
|
/* Compute 4 outputs at a time */
|
||||||
|
blkCnt = blockSize >> 2U;
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
|
||||||
|
vecSrc = vldrwq_s32(pSrc);
|
||||||
|
/*
|
||||||
|
* sum lanes
|
||||||
|
*/
|
||||||
|
sum = vaddlvaq(sum, vecSrc);
|
||||||
|
|
||||||
|
blkCnt --;
|
||||||
|
pSrc += 4;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Tail */
|
||||||
|
blkCnt = blockSize & 0x3;
|
||||||
|
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
sum += *pSrc++;
|
||||||
|
blkCnt --;
|
||||||
|
}
|
||||||
|
|
||||||
|
*pResult = sum;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
void arm_accumulate_q31(
|
||||||
|
const q31_t * pSrc,
|
||||||
|
uint32_t blockSize,
|
||||||
|
q31_t * pResult)
|
||||||
|
{
|
||||||
|
uint32_t blkCnt; /* Loop counter */
|
||||||
|
q63_t sum = 0; /* Temporary result storage */
|
||||||
|
|
||||||
|
#if defined (ARM_MATH_LOOPUNROLL)
|
||||||
|
|
||||||
|
/* 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 += *pSrc++;
|
||||||
|
|
||||||
|
sum += *pSrc++;
|
||||||
|
|
||||||
|
sum += *pSrc++;
|
||||||
|
|
||||||
|
sum += *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 += *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_MVEI) */
|
||||||
|
|
||||||
|
/**
|
||||||
|
@} end of Accumulation group
|
||||||
|
*/
|
||||||
@ -0,0 +1,153 @@
|
|||||||
|
/* ----------------------------------------------------------------------
|
||||||
|
* Project: CMSIS DSP Library
|
||||||
|
* Title: arm_accumulate_q7.c
|
||||||
|
* Description: Accumulation value of a Q7 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 "dsp/statistics_functions.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
@ingroup groupStats
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@addtogroup Accumulation
|
||||||
|
@{
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Accumulation value of a Q7 vector.
|
||||||
|
@param[in] pSrc points to the input vector
|
||||||
|
@param[in] blockSize number of samples in input vector
|
||||||
|
@param[out] pResult sum value returned here
|
||||||
|
@return none
|
||||||
|
|
||||||
|
@par Scaling and Overflow Behavior
|
||||||
|
The function is implemented using a 32-bit internal accumulator.
|
||||||
|
The input is represented in 1.7 format and is accumulated in a 32-bit
|
||||||
|
accumulator in 25.7 format.
|
||||||
|
There is no risk of internal overflow with this approach, and the
|
||||||
|
full precision of intermediate result is preserved.
|
||||||
|
Finally, the accumulator is truncated to yield a result of 1.7 format.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE)
|
||||||
|
|
||||||
|
void arm_accumulate_q7(
|
||||||
|
const q7_t * pSrc,
|
||||||
|
uint32_t blockSize,
|
||||||
|
q7_t * pResult)
|
||||||
|
{
|
||||||
|
uint32_t blkCnt; /* loop counters */
|
||||||
|
q7x16_t vecSrc;
|
||||||
|
q31_t sum = 0L;
|
||||||
|
|
||||||
|
|
||||||
|
blkCnt = blockSize >> 4;
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
vecSrc = vldrbq_s8(pSrc);
|
||||||
|
/*
|
||||||
|
* sum lanes
|
||||||
|
*/
|
||||||
|
sum = vaddvaq(sum, vecSrc);
|
||||||
|
|
||||||
|
blkCnt--;
|
||||||
|
pSrc += 16;
|
||||||
|
}
|
||||||
|
|
||||||
|
blkCnt = blockSize & 0xF;
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
sum += *pSrc++;
|
||||||
|
|
||||||
|
/* Decrement loop counter */
|
||||||
|
blkCnt--;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
/* Store the result to the destination */
|
||||||
|
*pResult = sum;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
void arm_accumulate_q7(
|
||||||
|
const q7_t * pSrc,
|
||||||
|
uint32_t blockSize,
|
||||||
|
q7_t * pResult)
|
||||||
|
{
|
||||||
|
uint32_t blkCnt; /* Loop counter */
|
||||||
|
q31_t sum = 0; /* Temporary result storage */
|
||||||
|
|
||||||
|
#if defined (ARM_MATH_LOOPUNROLL)
|
||||||
|
q31_t in;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined (ARM_MATH_LOOPUNROLL)
|
||||||
|
|
||||||
|
/* Loop unrolling: Compute 4 outputs at a time */
|
||||||
|
blkCnt = blockSize >> 2U;
|
||||||
|
|
||||||
|
while (blkCnt > 0U)
|
||||||
|
{
|
||||||
|
/* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
|
||||||
|
in = read_q7x4_ia (&pSrc);
|
||||||
|
sum += ((in << 24U) >> 24U);
|
||||||
|
sum += ((in << 16U) >> 24U);
|
||||||
|
sum += ((in << 8U) >> 24U);
|
||||||
|
sum += (in >> 24U);
|
||||||
|
|
||||||
|
/* 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 += *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_MVEI) */
|
||||||
|
|
||||||
|
/**
|
||||||
|
@} end of Accumulation group
|
||||||
|
*/
|
||||||
Loading…
Reference in New Issue