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https://github.com/IcedRooibos/py32f0-template.git
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134 lines
3.0 KiB
C
134 lines
3.0 KiB
C
/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_fill_q7.c
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* Description: Fills a constant value into a Q7 vector
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*
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* $Date: 23 April 2021
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* $Revision: V1.9.0
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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/support_functions.h"
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/**
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@ingroup groupSupport
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*/
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/**
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@addtogroup Fill
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@{
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*/
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/**
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@brief Fills a constant value into a Q7 vector.
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@param[in] value input value to be filled
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@param[out] pDst points to output vector
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@param[in] blockSize number of samples in each vector
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@return none
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*/
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#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE)
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void arm_fill_q7(
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q7_t value,
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q7_t * pDst,
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uint32_t blockSize)
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{
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uint32_t blkCnt;
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blkCnt = blockSize >> 4;
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while (blkCnt > 0U)
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{
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vstrbq_s8(pDst,vdupq_n_s8(value));
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/*
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* Decrement the blockSize loop counter
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* Advance vector source and destination pointers
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*/
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pDst += 16;
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blkCnt --;
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}
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blkCnt = blockSize & 0xF;
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while (blkCnt > 0U)
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{
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/* C = value */
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/* Fill value in destination buffer */
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*pDst++ = value;
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/* Decrement loop counter */
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blkCnt--;
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}
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}
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#else
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void arm_fill_q7(
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q7_t value,
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q7_t * pDst,
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uint32_t blockSize)
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{
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uint32_t blkCnt; /* Loop counter */
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#if defined (ARM_MATH_LOOPUNROLL)
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q31_t packedValue; /* value packed to 32 bits */
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/* Packing four 8 bit values to 32 bit value in order to use SIMD */
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packedValue = __PACKq7(value, value, value, value);
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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 = value */
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/* fill 4 samples at a time */
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write_q7x4_ia (&pDst, packedValue);
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/* Decrement 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 = value */
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/* Fill value in destination buffer */
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*pDst++ = value;
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/* Decrement loop counter */
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blkCnt--;
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}
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}
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#endif /* defined(ARM_MATH_MVEI) */
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/**
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@} end of Fill group
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*/
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