From 6ab94e0b318884bbcb95e2ea3835f951502e1d99 Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.net>
Date: Wed, 14 Oct 2020 12:47:28 +0200
Subject: Move firmware into subdirectory
---
.../DSP/Source/StatisticsFunctions/arm_rms_q31.c | 137 ---------------------
1 file changed, 137 deletions(-)
delete mode 100644 hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q31.c
(limited to 'hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q31.c')
diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q31.c b/hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q31.c
deleted file mode 100644
index 7cb9149..0000000
--- a/hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_rms_q31.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_rms_q31.c
- * Description: Root Mean Square of the elements of a Q31 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 Q31 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
- * <b>Scaling and Overflow Behavior:</b>
- *
- *\par
- * The function is implemented using an internal 64-bit accumulator.
- * The input is represented in 1.31 format, and intermediate multiplication
- * yields a 2.62 format.
- * The accumulator maintains full precision of the intermediate multiplication results,
- * but provides only a single guard bit.
- * There is no saturation on intermediate additions.
- * If the accumulator overflows, it wraps around and distorts the result.
- * In order to avoid overflows completely, the input signal must be scaled down by
- * log2(blockSize) bits, as a total of blockSize additions are performed internally.
- * Finally, the 2.62 accumulator is right shifted by 31 bits to yield a 1.31 format value.
- *
- */
-
-void arm_rms_q31(
- q31_t * pSrc,
- uint32_t blockSize,
- q31_t * pResult)
-{
- q63_t sum = 0; /* accumulator */
- q31_t in; /* Temporary variable to store the input */
- uint32_t blkCnt; /* loop counter */
-
-#if defined (ARM_MATH_DSP)
- /* Run the below code for Cortex-M4 and Cortex-M3 */
-
- q31_t in1, in2, in3, in4; /* Temporary input variables */
-
- /*loop Unrolling */
- blkCnt = blockSize >> 2U;
-
- /* First part of the processing with loop unrolling. Compute 8 outputs at a time.
- ** a second loop below computes the remaining 1 to 7 samples. */
- while (blkCnt > 0U)
- {
- /* C = A[0] * A[0] + A[1] * A[1] + A[2] * A[2] + ... + A[blockSize-1] * A[blockSize-1] */
- /* Compute sum of the squares and then store the result in a temporary variable, sum */
- /* read two samples from source buffer */
- in1 = pSrc[0];
- in2 = pSrc[1];
-
- /* calculate power and accumulate to accumulator */
- sum += (q63_t) in1 *in1;
- sum += (q63_t) in2 *in2;
-
- /* read two samples from source buffer */
- in3 = pSrc[2];
- in4 = pSrc[3];
-
- /* calculate power and accumulate to accumulator */
- sum += (q63_t) in3 *in3;
- sum += (q63_t) in4 *in4;
-
-
- /* update source buffer to process next samples */
- pSrc += 4U;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* If the blockSize is not a multiple of 8, compute any remaining output samples here.
- ** No loop unrolling is used. */
- blkCnt = blockSize % 0x4U;
-
-#else
- /* Run the below code for Cortex-M0 */
-
- blkCnt = blockSize;
-
-#endif /* #if defined (ARM_MATH_DSP) */
-
- while (blkCnt > 0U)
- {
- /* C = A[0] * A[0] + A[1] * A[1] + A[2] * A[2] + ... + A[blockSize-1] * A[blockSize-1] */
- /* Compute sum of the squares and then store the results in a temporary variable, sum */
- in = *pSrc++;
- sum += (q63_t) in *in;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Convert data in 2.62 to 1.31 by 31 right shifts and saturate */
- /* Compute Rms and store the result in the destination vector */
- arm_sqrt_q31(clip_q63_to_q31((sum / (q63_t) blockSize) >> 31), pResult);
-}
-
-/**
- * @} end of RMS group
- */
--
cgit