| /* ---------------------------------------------------------------------- | |
| * Project: CMSIS DSP Library | |
| * Title: arm_float_to_q15.c | |
| * Description: Converts the elements of the floating-point vector to Q15 vector | |
| * | |
| * $Date: 23 April 2021 | |
| * $Revision: V1.9.0 | |
| * | |
| * 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 groupSupport | |
| */ | |
| /** | |
| * @defgroup f16_to_x Convert 16-bit floating point value | |
| */ | |
| /** | |
| @addtogroup f16_to_x | |
| @{ | |
| */ | |
| /** | |
| @brief Converts the elements of the f16 vector to f32 vector. | |
| @param[in] pSrc points to the f16 input vector | |
| @param[out] pDst points to the f32 output vector | |
| @param[in] blockSize number of samples in each vector | |
| @return none | |
| */ | |
| void arm_f16_to_float( | |
| const float16_t * pSrc, | |
| float32_t * pDst, | |
| uint32_t blockSize) | |
| { | |
| int32_t blkCnt; /* loop counters */ | |
| float16x8_t vecDst; | |
| float32x4x2_t tmp; | |
| blkCnt = blockSize >> 3; | |
| while (blkCnt > 0) | |
| { | |
| vecDst = vldrhq_f16(pSrc); | |
| pSrc += 8; | |
| tmp.val[0] = vcvtbq_f32_f16(vecDst); | |
| tmp.val[1] = vcvttq_f32_f16(vecDst); | |
| vst2q(pDst,tmp); | |
| pDst += 8; | |
| /* | |
| * Decrement the blockSize loop counter | |
| */ | |
| blkCnt--; | |
| } | |
| /* | |
| * tail | |
| * (will be merged thru tail predication) | |
| */ | |
| blkCnt = blockSize & 7; | |
| while (blkCnt > 0) | |
| { | |
| *pDst++ = (float32_t) *pSrc++; | |
| /* | |
| * Decrement the loop counter | |
| */ | |
| blkCnt--; | |
| } | |
| } | |
| void arm_f16_to_float( | |
| const float16_t * pSrc, | |
| float32_t * pDst, | |
| uint32_t blockSize) | |
| { | |
| const float16_t *pIn = pSrc; /* Src pointer */ | |
| uint32_t blkCnt; /* loop counter */ | |
| /* | |
| * Loop over blockSize number of values | |
| */ | |
| blkCnt = blockSize; | |
| while (blkCnt > 0U) | |
| { | |
| *pDst++ = (float32_t) * pIn++; | |
| /* | |
| * Decrement the loop counter | |
| */ | |
| blkCnt--; | |
| } | |
| } | |
| /** | |
| @} end of f16_to_x group | |
| */ | |