| /* ---------------------------------------------------------------------- | |
| * Project: CMSIS DSP Library | |
| * Title: arm_dot_prod_f64.c | |
| * Description: Floating-point dot product | |
| * | |
| * $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. | |
| */ | |
| /** | |
| @ingroup groupMath | |
| */ | |
| /** | |
| @addtogroup BasicDotProd | |
| @{ | |
| */ | |
| /** | |
| @brief Dot product of floating-point vectors. | |
| @param[in] pSrcA points to the first input vector. | |
| @param[in] pSrcB points to the second input vector. | |
| @param[in] blockSize number of samples in each vector. | |
| @param[out] result output result returned here. | |
| @return none | |
| */ | |
| void arm_dot_prod_f64( | |
| const float64_t * pSrcA, | |
| const float64_t * pSrcB, | |
| uint32_t blockSize, | |
| float64_t * result) | |
| { | |
| uint32_t blkCnt; /* Loop counter */ | |
| float64_t sum = 0.; /* Temporary return variable */ | |
| /* Initialize blkCnt with number of samples */ | |
| blkCnt = blockSize; | |
| while (blkCnt > 0U) | |
| { | |
| /* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */ | |
| /* Calculate dot product and store result in a temporary buffer. */ | |
| sum += (*pSrcA++) * (*pSrcB++); | |
| /* Decrement loop counter */ | |
| blkCnt--; | |
| } | |
| /* Store result in destination buffer */ | |
| *result = sum; | |
| } | |
| /** | |
| @} end of BasicDotProd group | |
| */ | |