| /* ---------------------------------------------------------------------- |
| * 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 |
| */ |