/github/workspace/src/SupportFunctions/kernels/plp_fill_i32s_xpulpv2.c

Functions

	Name
void	plp_fill_i32s_xpulpv2(int32_t value, int32_t *restrict pDst, uint32_t blockSize) Fills a constant value into a 32-bit integer vector for XPULPV2 extension.

Functions Documentation

function plp_fill_i32s_xpulpv2

void plp_fill_i32s_xpulpv2(
    int32_t value,
    int32_t *__restrict__ pDst,
    uint32_t blockSize
)

Fills a constant value into a 32-bit integer vector for XPULPV2 extension.

Parameters:

• value input value to be filled
• pDst points to output vector
• blockSize number of samples in each vector

Return: none

Source code

/* ----------------------------------------------------------------------
 * Project:      PULP DSP Library
 * Title:        plp_fill_i32s_xpulpv2.c
 * Description:  Fills a constant value into a 32-bit integer vector for XPULPV2
 *
 * $Date:        02. June 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_fill_i32s_xpulpv2(int32_t value, int32_t *__restrict__ pDst, uint32_t blockSize) {

    uint32_t blkCnt, tmpBS; /* Loop counter, temporal BlockSize */
    int32_t value1 = value; // comment: it performs the same with or without temporary values.

#if defined(PLP_MATH_LOOPUNROLL)

    tmpBS = (blockSize >> 1);

    for (blkCnt = 0; blkCnt < tmpBS; blkCnt++) {
        *pDst++ = value;
        *pDst++ = value1;
    }

    tmpBS = (blockSize % 2U);

    for (blkCnt = 0; blkCnt < tmpBS; blkCnt++) {
        *pDst++ = value;
    }

#else

    for (blkCnt = 0; blkCnt < blockSize; blkCnt++) {
        *pDst++ = value;
    }

#endif // PLP_MATH_LOOPUNROLL
}

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Updated on 2023-03-01 at 16:16:33 +0000