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Official ARM version: v5.6.0

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rihab kouki 2020-07-28 11:24:49 +01:00
parent 9f95ff5b6b
commit 96d6da4e25
2939 changed files with 339304 additions and 113320 deletions
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144
DSP/Source/StatisticsFunctions/arm_power_f32.c
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@ -3,13 +3,13 @@
* Title: arm_power_f32.c
* Description: Sum of the squares of the elements of a floating-point vector
*
* $Date: 27. January 2017
* $Revision: V.1.5.1
* $Date: 18. March 2019
* $Revision: V1.6.0
*
* Target Processor: Cortex-M cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved.
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
@ -29,40 +29,37 @@
#include "arm_math.h"
/**
* @ingroup groupStats
@ingroup groupStats
*/
/**
* @defgroup power Power
*
* Calculates the sum of the squares of the elements in the input vector.
* The underlying algorithm is used:
*
* <pre>
* Result = pSrc[0] * pSrc[0] + pSrc[1] * pSrc[1] + pSrc[2] * pSrc[2] + ... + pSrc[blockSize-1] * pSrc[blockSize-1];
* </pre>
*
* There are separate functions for floating point, Q31, Q15, and Q7 data types.
@defgroup power Power
Calculates the sum of the squares of the elements in the input vector.
The underlying algorithm is used:
<pre>
Result = pSrc[0] * pSrc[0] + pSrc[1] * pSrc[1] + pSrc[2] * pSrc[2] + ... + pSrc[blockSize-1] * pSrc[blockSize-1];
</pre>
There are separate functions for floating point, Q31, Q15, and Q7 data types.
*/
/**
* @addtogroup power
* @{
@addtogroup power
@{
*/
/**
* @brief Sum of the squares 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 sum of the squares value returned here
* @return none.
*
@brief Sum of the squares of the elements of a floating-point vector.
@param[in] pSrc points to the input vector
@param[in] blockSize number of samples in input vector
@param[out] pResult sum of the squares value returned here
@return none
*/
#if defined(ARM_MATH_NEON)
void arm_power_f32(
float32_t * pSrc,
const float32_t * pSrc,
uint32_t blockSize,
float32_t * pResult)
{
@ -70,45 +67,32 @@ void arm_power_f32(
float32_t in; /* Temporary variable to store input value */
uint32_t blkCnt; /* loop counter */
#if defined (ARM_MATH_DSP)
/* Run the below code for Cortex-M4 and Cortex-M3 */
float32x4_t sumV = vdupq_n_f32(0.0f); /* Temporary result storage */
float32x2_t sumV2;
float32x4_t inV;
/*loop Unrolling */
blkCnt = blockSize >> 2U;
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
/* 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[2] * A[2] + ... + A[blockSize-1] * A[blockSize-1] */
/* Compute Power and then store the result in a temporary variable, sum. */
in = *pSrc++;
sum += in * in;
in = *pSrc++;
sum += in * in;
in = *pSrc++;
sum += in * in;
in = *pSrc++;
sum += in * in;
inV = vld1q_f32(pSrc);
sumV = vmlaq_f32(sumV, inV, inV);
pSrc += 4;
/* Decrement the loop counter */
blkCnt--;
}
sumV2 = vpadd_f32(vget_low_f32(sumV),vget_high_f32(sumV));
sum = sumV2[0] + sumV2[1];
/* 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 */
/* Loop over blockSize number of values */
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] */
@ -123,7 +107,69 @@ void arm_power_f32(
/* Store the result to the destination */
*pResult = sum;
}
#else
void arm_power_f32(
const float32_t * pSrc,
uint32_t blockSize,
float32_t * pResult)
{
uint32_t blkCnt; /* Loop counter */
float32_t sum = 0.0f; /* Temporary result storage */
float32_t in; /* Temporary variable to store input value */
#if defined (ARM_MATH_LOOPUNROLL)
/* Loop unrolling: Compute 4 outputs at a time */
blkCnt = blockSize >> 2U;
while (blkCnt > 0U)
{
/* C = A[0] * A[0] + A[1] * A[1] + ... + A[blockSize-1] * A[blockSize-1] */
/* Compute Power and store result in a temporary variable, sum. */
in = *pSrc++;
sum += in * in;
in = *pSrc++;
sum += in * in;
in = *pSrc++;
sum += in * in;
in = *pSrc++;
sum += in * in;
/* Decrement loop counter */
blkCnt--;
}
/* Loop unrolling: Compute remaining outputs */
blkCnt = blockSize % 0x4U;
#else
/* Initialize blkCnt with number of samples */
blkCnt = blockSize;
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
while (blkCnt > 0U)
{
/* C = A[0] * A[0] + A[1] * A[1] + ... + A[blockSize-1] * A[blockSize-1] */
/* Compute Power and store result in a temporary variable, sum. */
in = *pSrc++;
sum += in * in;
/* Decrement loop counter */
blkCnt--;
}
/* Store result to destination */
*pResult = sum;
}
#endif /* #if defined(ARM_MATH_NEON) */
/**
* @} end of power group
@} end of power group
*/