diff options
Diffstat (limited to 'fw/hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_var_f32.c')
| -rw-r--r-- | fw/hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_var_f32.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/fw/hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_var_f32.c b/fw/hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_var_f32.c deleted file mode 100644 index a366f5c..0000000 --- a/fw/hid-dials/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_var_f32.c +++ /dev/null @@ -1,181 +0,0 @@ -/* ----------------------------------------------------------------------
- * Project: CMSIS DSP Library
- * Title: arm_var_f32.c
- * Description: Variance of the elements of a floating-point 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"
-
-/**
- * @ingroup groupStats
- */
-
-/**
- * @defgroup variance Variance
- *
- * Calculates the variance of the elements in the input vector.
- * The underlying algorithm used is the direct method sometimes referred to as the two-pass method:
- *
- * <pre>
- * Result = sum(element - meanOfElements)^2) / numElement - 1
- *
- * where, meanOfElements = ( pSrc[0] * pSrc[0] + pSrc[1] * pSrc[1] + ... + pSrc[blockSize-1] ) / blockSize
- *
- * </pre>
- *
- * There are separate functions for floating point, Q31, and Q15 data types.
- */
-
-/**
- * @addtogroup variance
- * @{
- */
-
-
-/**
- * @brief Variance of the elements of a floating-point vector.
- * @param[in] *pSrc points to the input vector
- * @param[in] blockSize length of the input vector
- * @param[out] *pResult variance value returned here
- * @return none.
- */
-
-void arm_var_f32(
- float32_t * pSrc,
- uint32_t blockSize,
- float32_t * pResult)
-{
- float32_t fMean, fValue;
- uint32_t blkCnt; /* loop counter */
- float32_t * pInput = pSrc;
- float32_t sum = 0.0f;
- float32_t fSum = 0.0f;
- #if defined(ARM_MATH_DSP)
- float32_t in1, in2, in3, in4;
- #endif
-
- if (blockSize <= 1U)
- {
- *pResult = 0;
- return;
- }
-
- #if defined(ARM_MATH_DSP)
- /* Run the below code for Cortex-M4 and Cortex-M7 */
-
- /*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[1] + A[2] + ... + A[blockSize-1]) */
- in1 = *pInput++;
- in2 = *pInput++;
- in3 = *pInput++;
- in4 = *pInput++;
-
- sum += in1;
- sum += in2;
- sum += in3;
- sum += in4;
-
- /* 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;
-
- #else
- /* Run the below code for Cortex-M0 or Cortex-M3 */
-
- /* Loop over blockSize number of values */
- blkCnt = blockSize;
-
- #endif
-
- while (blkCnt > 0U)
- {
- /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) */
- sum += *pInput++;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* C = (A[0] + A[1] + A[2] + ... + A[blockSize-1]) / blockSize */
- fMean = sum / (float32_t) blockSize;
-
- pInput = pSrc;
-
- #if defined(ARM_MATH_DSP)
-
- /*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)
- {
- fValue = *pInput++ - fMean;
- fSum += fValue * fValue;
- fValue = *pInput++ - fMean;
- fSum += fValue * fValue;
- fValue = *pInput++ - fMean;
- fSum += fValue * fValue;
- fValue = *pInput++ - fMean;
- fSum += fValue * fValue;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- blkCnt = blockSize % 0x4U;
- #else
- /* Run the below code for Cortex-M0 or Cortex-M3 */
-
- /* Loop over blockSize number of values */
- blkCnt = blockSize;
- #endif
-
- while (blkCnt > 0U)
- {
- fValue = *pInput++ - fMean;
- fSum += fValue * fValue;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Variance */
- *pResult = fSum / (float32_t)(blockSize - 1.0f);
-}
-
-/**
- * @} end of variance group
- */
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