From 94f94260ace13688285fc8c62687079b26c18854 Mon Sep 17 00:00:00 2001 From: jaseg Date: Sun, 20 Dec 2020 15:18:02 +0100 Subject: Submodule-cache WIP --- .../DSP/Source/StatisticsFunctions/arm_rms_q15.c | 139 --------------------- 1 file changed, 139 deletions(-) delete mode 100644 fw/midi-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q15.c (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q15.c') diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q15.c b/fw/midi-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q15.c deleted file mode 100644 index 7cc2e12..0000000 --- a/fw/midi-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q15.c +++ /dev/null @@ -1,139 +0,0 @@ -/* ---------------------------------------------------------------------- - * Project: CMSIS DSP Library - * Title: arm_rms_q15.c - * Description: Root Mean Square of the elements of a Q15 vector - * - * $Date: 27. January 2017 - * $Revision: V.1.5.1 - * - * Target Processor: Cortex-M cores - * -------------------------------------------------------------------- */ -/* - * Copyright (C) 2010-2017 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 "arm_math.h" - -/** - * @addtogroup RMS - * @{ - */ - -/** - * @brief Root Mean Square of the elements of a Q15 vector. - * @param[in] *pSrc points to the input vector - * @param[in] blockSize length of the input vector - * @param[out] *pResult rms value returned here - * @return none. - * - * @details - * Scaling and Overflow Behavior: - * - * \par - * The function is implemented using a 64-bit internal accumulator. - * The input is represented in 1.15 format. - * Intermediate multiplication yields a 2.30 format, and this - * result is added without saturation to a 64-bit accumulator in 34.30 format. - * With 33 guard bits in the accumulator, there is no risk of overflow, and the - * full precision of the intermediate multiplication is preserved. - * Finally, the 34.30 result is truncated to 34.15 format by discarding the lower - * 15 bits, and then saturated to yield a result in 1.15 format. - * - */ - -void arm_rms_q15( - q15_t * pSrc, - uint32_t blockSize, - q15_t * pResult) -{ - q63_t sum = 0; /* accumulator */ - -#if defined (ARM_MATH_DSP) - /* Run the below code for Cortex-M4 and Cortex-M3 */ - - q31_t in; /* temporary variable to store the input value */ - q15_t in1; /* temporary variable to store the input value */ - uint32_t blkCnt; /* loop counter */ - - /* loop Unrolling */ - blkCnt = blockSize >> 2U; - - /* First part of the processing with loop unrolling. Compute 4 outputs at a time. - ** a second loop below computes the remaining 1 to 3 samples. */ - while (blkCnt > 0U) - { - /* C = (A[0] * A[0] + A[1] * A[1] + ... + A[blockSize-1] * A[blockSize-1]) */ - /* Compute sum of the squares and then store the results in a temporary variable, sum */ - in = *__SIMD32(pSrc)++; - sum = __SMLALD(in, in, sum); - in = *__SIMD32(pSrc)++; - sum = __SMLALD(in, in, sum); - - /* Decrement the loop counter */ - blkCnt--; - } - - /* If the blockSize is not a multiple of 4, compute any remaining output samples here. - ** No loop unrolling is used. */ - blkCnt = blockSize % 0x4U; - - while (blkCnt > 0U) - { - /* C = (A[0] * A[0] + A[1] * A[1] + ... + A[blockSize-1] * A[blockSize-1]) */ - /* Compute sum of the squares and then store the results in a temporary variable, sum */ - in1 = *pSrc++; - sum = __SMLALD(in1, in1, sum); - - /* Decrement the loop counter */ - blkCnt--; - } - - /* Truncating and saturating the accumulator to 1.15 format */ - /* Store the result in the destination */ - arm_sqrt_q15(__SSAT((sum / (q63_t)blockSize) >> 15, 16), pResult); - -#else - /* Run the below code for Cortex-M0 */ - - q15_t in; /* temporary variable to store the input value */ - uint32_t blkCnt; /* loop counter */ - - /* Loop over blockSize number of values */ - blkCnt = blockSize; - - while (blkCnt > 0U) - { - /* C = (A[0] * A[0] + A[1] * A[1] + ... + A[blockSize-1] * A[blockSize-1]) */ - /* Compute sum of the squares and then store the results in a temporary variable, sum */ - in = *pSrc++; - sum += ((q31_t) in * in); - - /* Decrement the loop counter */ - blkCnt--; - } - - /* Truncating and saturating the accumulator to 1.15 format */ - /* Store the result in the destination */ - arm_sqrt_q15(__SSAT((sum / (q63_t)blockSize) >> 15, 16), pResult); - -#endif /* #if defined (ARM_MATH_DSP) */ - -} - -/** - * @} end of RMS group - */ -- cgit