| /* | |
| * SPDX-FileCopyrightText: Copyright 2010-2022 Arm Limited and/or its affiliates <open-source-office@arm.com> | |
| * | |
| * 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. | |
| */ | |
| /* ---------------------------------------------------------------------- | |
| * Project: CMSIS NN Library | |
| * Title: arm_nn_mult_q7.c | |
| * Description: Q7 vector multiplication with variable output shifts | |
| * | |
| * $Date: 4 Aug 2022 | |
| * $Revision: V.1.1.3 | |
| * | |
| * Target Processor: Cortex-M cores | |
| * | |
| * -------------------------------------------------------------------- */ | |
| /** | |
| * @ingroup groupSupport | |
| */ | |
| /** | |
| * @addtogroup NNBasicMath | |
| * @{ | |
| */ | |
| /* | |
| * Q7 vector multiplication with variable output shifts | |
| * Refer function header for details | |
| */ | |
| void arm_nn_mult_q7(q7_t *pSrcA, q7_t *pSrcB, q7_t *pDst, const uint16_t out_shift, uint32_t blockSize) | |
| { | |
| uint32_t blkCnt = blockSize; /* loop counters */ | |
| while (blkCnt > 0U) | |
| { | |
| /* C = A * B */ | |
| /* Multiply the inputs and store the result in the destination buffer */ | |
| *pDst++ = (q7_t)__SSAT(((q15_t)((q15_t)(*pSrcA++) * (*pSrcB++) + NN_ROUND(out_shift)) >> out_shift), 8); | |
| /* Decrement the blockSize loop counter */ | |
| blkCnt--; | |
| } | |
| } | |
| /** | |
| * @} end of NNBasicMath group | |
| */ | |