131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
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/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_copy_f16.c
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* Description: Copies the elements of a floating-point 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_f16.h"
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#if defined(ARM_FLOAT16_SUPPORTED)
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/**
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@ingroup groupSupport
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*/
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/**
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@addtogroup copy
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@{
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*/
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/**
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@brief Copies the elements of a f16 vector.
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@param[in] pSrc points to input vector
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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_MVE_FLOAT16) && !defined(ARM_MATH_AUTOVECTORIZE)
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void arm_copy_f16(
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const float16_t * pSrc,
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float16_t * pDst,
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uint32_t blockSize)
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{
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do {
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mve_pred16_t p = vctp16q(blockSize);
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vstrhq_p_f16(pDst,
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vldrhq_z_f16((float16_t const *) pSrc, p), p);
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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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pSrc += 8;
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pDst += 8;
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blockSize -= 8;
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}
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while ((int32_t) blockSize > 0);
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}
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#else
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void arm_copy_f16(
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const float16_t * pSrc,
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float16_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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/* 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 */
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/* Copy and store result in destination buffer */
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*pDst++ = *pSrc++;
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*pDst++ = *pSrc++;
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*pDst++ = *pSrc++;
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*pDst++ = *pSrc++;
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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 = A */
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/* Copy and store result in destination buffer */
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*pDst++ = *pSrc++;
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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_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
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/**
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@} end of BasicCopy group
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*/
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#endif /* #if defined(ARM_FLOAT16_SUPPORTED) */
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