From 9c59a184dba820975e5da6fcd5d248aee87f7e2f Mon Sep 17 00:00:00 2001 From: Clyne Sullivan Date: Sun, 2 Feb 2025 11:26:53 -0500 Subject: add l476 implementation --- .../DSP/Source/StatisticsFunctions/arm_max_q15.c | 349 +++++++++------------ 1 file changed, 148 insertions(+), 201 deletions(-) (limited to 'Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_max_q15.c') diff --git a/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_max_q15.c b/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_max_q15.c index 5715e37..dbead54 100644 --- a/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_max_q15.c +++ b/Drivers/CMSIS/DSP/Source/StatisticsFunctions/arm_max_q15.c @@ -1,201 +1,148 @@ -/* ---------------------------------------------------------------------- - * Project: CMSIS DSP Library - * Title: arm_max_q15.c - * Description: Maximum value of a Q15 vector - * - * $Date: 23 April 2021 - * $Revision: V1.9.0 - * - * Target Processor: Cortex-M and Cortex-A cores - * -------------------------------------------------------------------- */ -/* - * Copyright (C) 2010-2021 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 "dsp/statistics_functions.h" - -/** - @ingroup groupStats - */ - -/** - @addtogroup Max - @{ - */ - -/** - @brief Maximum value of a Q15 vector. - @param[in] pSrc points to the input vector - @param[in] blockSize number of samples in input vector - @param[out] pResult maximum value returned here - @param[out] pIndex index of maximum value returned here - @return none - */ -#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE) - -#include "arm_helium_utils.h" - -void arm_max_q15( - const q15_t * pSrc, - uint32_t blockSize, - q15_t * pResult, - uint32_t * pIndex) -{ - int32_t blkCnt; /* loop counters */ - q15x8_t extremValVec = vdupq_n_s16(Q15_MIN); - q15_t maxValue = Q15_MIN; - uint16x8_t indexVec; - uint16x8_t extremIdxVec; - mve_pred16_t p0; - uint16_t extremIdxArr[8]; - - indexVec = vidupq_u16(0U, 1); - - blkCnt = blockSize; - do { - mve_pred16_t p = vctp16q(blkCnt); - q15x8_t extremIdxVal = vld1q_z_s16(pSrc, p); - /* - * Get current max per lane and current index per lane - * when a max is selected - */ - p0 = vcmpgeq_m(extremIdxVal, extremValVec, p); - - extremValVec = vorrq_m(extremValVec, extremIdxVal, extremIdxVal, p0); - /* store per-lane extrema indexes */ - vst1q_p_u16(extremIdxArr, indexVec, p0); - - indexVec += 8; - pSrc += 8; - blkCnt -= 8; - } - while (blkCnt > 0); - - - /* Get max value across the vector */ - maxValue = vmaxvq(maxValue, extremValVec); - - /* set index for lower values to max possible index */ - p0 = vcmpgeq(extremValVec, maxValue); - extremIdxVec = vld1q_u16(extremIdxArr); - - indexVec = vpselq(extremIdxVec, vdupq_n_u16(blockSize - 1), p0); - *pIndex = vminvq(blockSize - 1, indexVec); - *pResult = maxValue; -} - -#else -void arm_max_q15( - const q15_t * pSrc, - uint32_t blockSize, - q15_t * pResult, - uint32_t * pIndex) -{ - q15_t maxVal, out; /* Temporary variables to store the output value. */ - uint32_t blkCnt, outIndex; /* Loop counter */ - -#if defined (ARM_MATH_LOOPUNROLL) - uint32_t index; /* index of maximum value */ -#endif - - /* Initialise index value to zero. */ - outIndex = 0U; - /* Load first input value that act as reference value for comparision */ - out = *pSrc++; - -#if defined (ARM_MATH_LOOPUNROLL) - /* Initialise index of maximum value. */ - index = 0U; - - /* Loop unrolling: Compute 4 outputs at a time */ - blkCnt = (blockSize - 1U) >> 2U; - - while (blkCnt > 0U) - { - /* Initialize maxVal to next consecutive values one by one */ - maxVal = *pSrc++; - - /* compare for the maximum value */ - if (out < maxVal) - { - /* Update the maximum value and it's index */ - out = maxVal; - outIndex = index + 1U; - } - - maxVal = *pSrc++; - if (out < maxVal) - { - out = maxVal; - outIndex = index + 2U; - } - - maxVal = *pSrc++; - if (out < maxVal) - { - out = maxVal; - outIndex = index + 3U; - } - - maxVal = *pSrc++; - if (out < maxVal) - { - out = maxVal; - outIndex = index + 4U; - } - - index += 4U; - - /* Decrement loop counter */ - blkCnt--; - } - - /* Loop unrolling: Compute remaining outputs */ - blkCnt = (blockSize - 1U) % 4U; - -#else - - /* Initialize blkCnt with number of samples */ - blkCnt = (blockSize - 1U); - -#endif /* #if defined (ARM_MATH_LOOPUNROLL) */ - - while (blkCnt > 0U) - { - /* Initialize maxVal to the next consecutive values one by one */ - maxVal = *pSrc++; - - /* compare for the maximum value */ - if (out < maxVal) - { - /* Update the maximum value and it's index */ - out = maxVal; - outIndex = blockSize - blkCnt; - } - - /* Decrement loop counter */ - blkCnt--; - } - - /* Store the maximum value and it's index into destination pointers */ - *pResult = out; - *pIndex = outIndex; -} -#endif /* defined(ARM_MATH_MVEI) */ -/** - @} end of Max group - */ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_max_q15.c + * Description: Maximum value of a Q15 vector + * + * $Date: 18. March 2019 + * $Revision: V1.6.0 + * + * Target Processor: Cortex-M cores + * -------------------------------------------------------------------- */ +/* + * Copyright (C) 2010-2019 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 + */ + +/** + @addtogroup Max + @{ + */ + +/** + @brief Maximum value of a Q15 vector. + @param[in] pSrc points to the input vector + @param[in] blockSize number of samples in input vector + @param[out] pResult maximum value returned here + @param[out] pIndex index of maximum value returned here + @return none + */ + +void arm_max_q15( + const q15_t * pSrc, + uint32_t blockSize, + q15_t * pResult, + uint32_t * pIndex) +{ + q15_t maxVal, out; /* Temporary variables to store the output value. */ + uint32_t blkCnt, outIndex; /* Loop counter */ + +#if defined (ARM_MATH_LOOPUNROLL) + uint32_t index; /* index of maximum value */ +#endif + + /* Initialise index value to zero. */ + outIndex = 0U; + /* Load first input value that act as reference value for comparision */ + out = *pSrc++; + +#if defined (ARM_MATH_LOOPUNROLL) + /* Initialise index of maximum value. */ + index = 0U; + + /* Loop unrolling: Compute 4 outputs at a time */ + blkCnt = (blockSize - 1U) >> 2U; + + while (blkCnt > 0U) + { + /* Initialize maxVal to next consecutive values one by one */ + maxVal = *pSrc++; + + /* compare for the maximum value */ + if (out < maxVal) + { + /* Update the maximum value and it's index */ + out = maxVal; + outIndex = index + 1U; + } + + maxVal = *pSrc++; + if (out < maxVal) + { + out = maxVal; + outIndex = index + 2U; + } + + maxVal = *pSrc++; + if (out < maxVal) + { + out = maxVal; + outIndex = index + 3U; + } + + maxVal = *pSrc++; + if (out < maxVal) + { + out = maxVal; + outIndex = index + 4U; + } + + index += 4U; + + /* Decrement loop counter */ + blkCnt--; + } + + /* Loop unrolling: Compute remaining outputs */ + blkCnt = (blockSize - 1U) % 4U; + +#else + + /* Initialize blkCnt with number of samples */ + blkCnt = (blockSize - 1U); + +#endif /* #if defined (ARM_MATH_LOOPUNROLL) */ + + while (blkCnt > 0U) + { + /* Initialize maxVal to the next consecutive values one by one */ + maxVal = *pSrc++; + + /* compare for the maximum value */ + if (out < maxVal) + { + /* Update the maximum value and it's index */ + out = maxVal; + outIndex = blockSize - blkCnt; + } + + /* Decrement loop counter */ + blkCnt--; + } + + /* Store the maximum value and it's index into destination pointers */ + *pResult = out; + *pIndex = outIndex; +} + +/** + @} end of Max group + */ -- cgit v1.2.3