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Diffstat (limited to 'apps/mathlib/CMSIS/DSP_Lib/Source/StatisticsFunctions/arm_power_q7.c')
-rw-r--r-- | apps/mathlib/CMSIS/DSP_Lib/Source/StatisticsFunctions/arm_power_q7.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/apps/mathlib/CMSIS/DSP_Lib/Source/StatisticsFunctions/arm_power_q7.c b/apps/mathlib/CMSIS/DSP_Lib/Source/StatisticsFunctions/arm_power_q7.c deleted file mode 100644 index 5cb99b4c2..000000000 --- a/apps/mathlib/CMSIS/DSP_Lib/Source/StatisticsFunctions/arm_power_q7.c +++ /dev/null @@ -1,133 +0,0 @@ -/* ----------------------------------------------------------------------
-* Copyright (C) 2010 ARM Limited. All rights reserved.
-*
-* $Date: 15. February 2012
-* $Revision: V1.1.0
-*
-* Project: CMSIS DSP Library
-* Title: arm_power_q7.c
-*
-* Description: Sum of the squares of the elements of a Q7 vector.
-*
-* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
-*
-* Version 1.1.0 2012/02/15
-* Updated with more optimizations, bug fixes and minor API changes.
-*
-* Version 1.0.10 2011/7/15
-* Big Endian support added and Merged M0 and M3/M4 Source code.
-*
-* Version 1.0.3 2010/11/29
-* Re-organized the CMSIS folders and updated documentation.
-*
-* Version 1.0.2 2010/11/11
-* Documentation updated.
-*
-* Version 1.0.1 2010/10/05
-* Production release and review comments incorporated.
-*
-* Version 1.0.0 2010/09/20
-* Production release and review comments incorporated.
-* -------------------------------------------------------------------- */
-
-#include "arm_math.h"
-
-/**
- * @ingroup groupStats
- */
-
-/**
- * @addtogroup power
- * @{
- */
-
-/**
- * @brief Sum of the squares of the elements of a Q7 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.
- *
- * @details
- * <b>Scaling and Overflow Behavior:</b>
- *
- * \par
- * The function is implemented using a 32-bit internal accumulator.
- * The input is represented in 1.7 format.
- * Intermediate multiplication yields a 2.14 format, and this
- * result is added without saturation to an accumulator in 18.14 format.
- * With 17 guard bits in the accumulator, there is no risk of overflow, and the
- * full precision of the intermediate multiplication is preserved.
- * Finally, the return result is in 18.14 format.
- *
- */
-
-void arm_power_q7(
- q7_t * pSrc,
- uint32_t blockSize,
- q31_t * pResult)
-{
- q31_t sum = 0; /* Temporary result storage */
- q7_t in; /* Temporary variable to store input */
- uint32_t blkCnt; /* loop counter */
-
-#ifndef ARM_MATH_CM0
-
- /* Run the below code for Cortex-M4 and Cortex-M3 */
-
- q31_t input1; /* Temporary variable to store packed input */
- q31_t in1, in2; /* Temporary variables to store input */
-
- /*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)
- {
- /* Reading two inputs of pSrc vector and packing */
- input1 = *__SIMD32(pSrc)++;
-
- in1 = __SXTB16(__ROR(input1, 8));
- in2 = __SXTB16(input1);
-
- /* C = A[0] * A[0] + A[1] * A[1] + A[2] * A[2] + ... + A[blockSize-1] * A[blockSize-1] */
- /* calculate power and accumulate to accumulator */
- sum = __SMLAD(in1, in1, sum);
- sum = __SMLAD(in2, in2, 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;
-
-#else
-
- /* Run the below code for Cortex-M0 */
-
- /* Loop over blockSize number of values */
- blkCnt = blockSize;
-
-#endif /* #ifndef ARM_MATH_CM0 */
-
- 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 += ((q15_t) in * in);
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Store the result in 18.14 format */
- *pResult = sum;
-}
-
-/**
- * @} end of power group
- */
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