76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
|
/* ----------------------------------------------------------------------
|
||
|
|
* Project: CMSIS DSP Library
|
||
|
|
* Title: arm_scale_f64.c
|
||
|
|
* Description: Multiplies a floating-point vector by a scalar
|
||
|
|
*
|
||
|
|
* $Date: 13 September 2021
|
||
|
|
* $Revision: V1.10.0
|
||
|
|
*
|
||
|
|
* 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/basic_math_functions.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
@ingroup groupMath
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
@addtogroup BasicScale
|
||
|
|
@{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
@brief Multiplies a floating-point vector by a scalar.
|
||
|
|
@param[in] pSrc points to the input vector
|
||
|
|
@param[in] scale scale factor to be applied
|
||
|
|
@param[out] pDst points to the output vector
|
||
|
|
@param[in] blockSize number of samples in each vector
|
||
|
|
@return none
|
||
|
|
*/
|
||
|
|
|
||
|
|
void arm_scale_f64(
|
||
|
|
const float64_t *pSrc,
|
||
|
|
float64_t scale,
|
||
|
|
float64_t *pDst,
|
||
|
|
uint32_t blockSize)
|
||
|
|
{
|
||
|
|
uint32_t blkCnt; /* Loop counter */
|
||
|
|
|
||
|
|
/* Initialize blkCnt with number of samples */
|
||
|
|
blkCnt = blockSize;
|
||
|
|
|
||
|
|
while (blkCnt > 0U)
|
||
|
|
{
|
||
|
|
/* C = A * scale */
|
||
|
|
|
||
|
|
/* Scale input and store result in destination buffer. */
|
||
|
|
*pDst++ = (*pSrc++) * scale;
|
||
|
|
|
||
|
|
/* Decrement loop counter */
|
||
|
|
blkCnt--;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
@} end of BasicScale group
|
||
|
|
*/
|