/github/workspace/src/BasicMathFunctions/dot_prod/kernels/plp_dot_prod_i32s_rv32im.c
Functions
Name | |
---|---|
void | plp_dot_prod_i32s_rv32im(const int32_t restrict pSrcA, const int32_t restrict pSrcB, uint32_t blockSize, int32_t *restrict pRes) Scalar dot product of 32-bit integer vectors kernel for RV32IM extension. |
Functions Documentation
function plp_dot_prod_i32s_rv32im
void plp_dot_prod_i32s_rv32im(
const int32_t *__restrict__ pSrcA,
const int32_t *__restrict__ pSrcB,
uint32_t blockSize,
int32_t *__restrict__ pRes
)
Scalar dot product of 32-bit integer vectors kernel for RV32IM extension.
Parameters:
- pSrcA points to the first input vector
- pSrcB points to the second input vector
- blockSize number of samples in each vector
- pRes output result returned here
Return: none
Source code
/* =====================================================================
* Project: PULP DSP Library
* Title: plp_dot_prod_i32s_rv32im.c
* Description: 32-bit integer scalar dot product kernel for RV32IM
*
* $Date: 16. May 2019
* $Revision: V0
*
* Target Processor: PULP cores
* ===================================================================== */
/*
* Copyright (C) 2019 ETH Zurich and University of Bologna.
*
* Author: Xiaying Wang, ETH Zurich
*
* 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.
*
* Notice: project inspired by ARM CMSIS DSP and parts of source code
* ported and adopted for RISC-V PULP platform from ARM CMSIS DSP
* released under Copyright (C) 2010-2019 ARM Limited or its affiliates
* with Apache-2.0.
*/
#include "plp_math.h"
void plp_dot_prod_i32s_rv32im(const int32_t *__restrict__ pSrcA,
const int32_t *__restrict__ pSrcB,
uint32_t blockSize,
int32_t *__restrict__ pRes) {
uint32_t blkCnt; /* Loop counter */
int32_t sum = 0; /* Temporary return variable */
#if defined(PLP_MATH_LOOPUNROLL)
for (blkCnt = 0; blkCnt < (blockSize >> 2); blkCnt++) {
sum += (*pSrcA++) * (*pSrcB++);
sum += (*pSrcA++) * (*pSrcB++);
sum += (*pSrcA++) * (*pSrcB++);
sum += (*pSrcA++) * (*pSrcB++);
}
for (blkCnt = 0; blkCnt < (blockSize % 4U); blkCnt++) {
sum += (*pSrcA++) * (*pSrcB++);
}
#else // PLP_MATH_LOOPUNROLL
for (blkCnt = 0; blkCnt < blockSize; blkCnt++) {
sum += (*pSrcA++) * (*pSrcB++);
}
#endif // PLP_MATH_LOOPUNROLL
*pRes = sum;
}
Updated on 2023-03-01 at 16:16:32 +0000