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/BasicMathFunctions/arm_shift_q15.c | 452 +++++++++------------ 1 file changed, 201 insertions(+), 251 deletions(-) (limited to 'Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_shift_q15.c') diff --git a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_shift_q15.c b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_shift_q15.c index 2de3b2b..360be97 100644 --- a/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_shift_q15.c +++ b/Drivers/CMSIS/DSP/Source/BasicMathFunctions/arm_shift_q15.c @@ -1,251 +1,201 @@ -/* ---------------------------------------------------------------------- - * Project: CMSIS DSP Library - * Title: arm_shift_q15.c - * Description: Shifts the elements of a Q15 vector by a specified number of bits - * - * $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/basic_math_functions.h" - -/** - @ingroup groupMath - */ - -/** - @addtogroup BasicShift - @{ - */ - -/** - @brief Shifts the elements of a Q15 vector a specified number of bits - @param[in] pSrc points to the input vector - @param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right. - @param[out] pDst points to the output vector - @param[in] blockSize number of samples in each vector - @return none - - @par Scaling and Overflow Behavior - The function uses saturating arithmetic. - Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated. - */ - -#if defined(ARM_MATH_MVEI) && !defined(ARM_MATH_AUTOVECTORIZE) - -#include "arm_helium_utils.h" - -void arm_shift_q15( - const q15_t * pSrc, - int8_t shiftBits, - q15_t * pDst, - uint32_t blockSize) -{ - uint32_t blkCnt; /* loop counters */ - q15x8_t vecSrc; - q15x8_t vecDst; - - /* Compute 8 outputs at a time */ - blkCnt = blockSize >> 3; - while (blkCnt > 0U) - { - /* - * C = A (>> or <<) shiftBits - * Shift the input and then store the result in the destination buffer. - */ - vecSrc = vld1q(pSrc); - vecDst = vqshlq_r(vecSrc, shiftBits); - vst1q(pDst, vecDst); - /* - * Decrement the blockSize loop counter - */ - blkCnt--; - /* - * advance vector source and destination pointers - */ - pSrc += 8; - pDst += 8; - } - /* - * tail - */ - blkCnt = blockSize & 7; - if (blkCnt > 0U) - { - mve_pred16_t p0 = vctp16q(blkCnt); - vecSrc = vld1q(pSrc); - vecDst = vqshlq_r(vecSrc, shiftBits); - vstrhq_p(pDst, vecDst, p0); - } -} - -#else -void arm_shift_q15( - const q15_t * pSrc, - int8_t shiftBits, - q15_t * pDst, - uint32_t blockSize) -{ - uint32_t blkCnt; /* Loop counter */ - uint8_t sign = (shiftBits & 0x80); /* Sign of shiftBits */ - -#if defined (ARM_MATH_LOOPUNROLL) - -#if defined (ARM_MATH_DSP) - q15_t in1, in2; /* Temporary input variables */ -#endif - - /* Loop unrolling: Compute 4 outputs at a time */ - blkCnt = blockSize >> 2U; - - /* If the shift value is positive then do right shift else left shift */ - if (sign == 0U) - { - while (blkCnt > 0U) - { - /* C = A << shiftBits */ - -#if defined (ARM_MATH_DSP) - /* read 2 samples from source */ - in1 = *pSrc++; - in2 = *pSrc++; - - /* Shift the inputs and then store the results in the destination buffer. */ -#ifndef ARM_MATH_BIG_ENDIAN - write_q15x2_ia (&pDst, __PKHBT(__SSAT(((q31_t) in1 << shiftBits), 16), - __SSAT(((q31_t) in2 << shiftBits), 16), 16)); -#else - write_q15x2_ia (&pDst, __PKHBT(__SSAT(((q31_t) in2 << shiftBits), 16), - __SSAT(((q31_t) in1 << shiftBits), 16), 16)); -#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ - - /* read 2 samples from source */ - in1 = *pSrc++; - in2 = *pSrc++; - -#ifndef ARM_MATH_BIG_ENDIAN - write_q15x2_ia (&pDst, __PKHBT(__SSAT(((q31_t) in1 << shiftBits), 16), - __SSAT(((q31_t) in2 << shiftBits), 16), 16)); -#else - write_q15x2_ia (&pDst, __PKHBT(__SSAT(((q31_t) in2 << shiftBits), 16), - __SSAT(((q31_t) in1 << shiftBits), 16), 16)); -#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ - -#else - *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); - *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); - *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); - *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); -#endif - - /* Decrement loop counter */ - blkCnt--; - } - } - else - { - while (blkCnt > 0U) - { - /* C = A >> shiftBits */ - -#if defined (ARM_MATH_DSP) - /* read 2 samples from source */ - in1 = *pSrc++; - in2 = *pSrc++; - - /* Shift the inputs and then store the results in the destination buffer. */ -#ifndef ARM_MATH_BIG_ENDIAN - write_q15x2_ia (&pDst, __PKHBT((in1 >> -shiftBits), - (in2 >> -shiftBits), 16)); -#else - write_q15x2_ia (&pDst, __PKHBT((in2 >> -shiftBits), - (in1 >> -shiftBits), 16)); -#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ - - /* read 2 samples from source */ - in1 = *pSrc++; - in2 = *pSrc++; - -#ifndef ARM_MATH_BIG_ENDIAN - write_q15x2_ia (&pDst, __PKHBT((in1 >> -shiftBits), - (in2 >> -shiftBits), 16)); -#else - write_q15x2_ia (&pDst, __PKHBT((in2 >> -shiftBits), - (in1 >> -shiftBits), 16)); -#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ - -#else - *pDst++ = (*pSrc++ >> -shiftBits); - *pDst++ = (*pSrc++ >> -shiftBits); - *pDst++ = (*pSrc++ >> -shiftBits); - *pDst++ = (*pSrc++ >> -shiftBits); -#endif - - /* 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) */ - - /* If the shift value is positive then do right shift else left shift */ - if (sign == 0U) - { - while (blkCnt > 0U) - { - /* C = A << shiftBits */ - - /* Shift input and store result in destination buffer. */ - *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); - - /* Decrement loop counter */ - blkCnt--; - } - } - else - { - while (blkCnt > 0U) - { - /* C = A >> shiftBits */ - - /* Shift input and store result in destination buffer. */ - *pDst++ = (*pSrc++ >> -shiftBits); - - /* Decrement loop counter */ - blkCnt--; - } - } - -} -#endif /* defined(ARM_MATH_MVEI) */ - -/** - @} end of BasicShift group - */ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_shift_q15.c + * Description: Shifts the elements of a Q15 vector by a specified number of bits + * + * $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 groupMath + */ + +/** + @addtogroup BasicShift + @{ + */ + +/** + @brief Shifts the elements of a Q15 vector a specified number of bits + @param[in] pSrc points to the input vector + @param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right. + @param[out] pDst points to the output vector + @param[in] blockSize number of samples in each vector + @return none + + @par Scaling and Overflow Behavior + The function uses saturating arithmetic. + Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated. + */ + +void arm_shift_q15( + const q15_t * pSrc, + int8_t shiftBits, + q15_t * pDst, + uint32_t blockSize) +{ + uint32_t blkCnt; /* Loop counter */ + uint8_t sign = (shiftBits & 0x80); /* Sign of shiftBits */ + +#if defined (ARM_MATH_LOOPUNROLL) + +#if defined (ARM_MATH_DSP) + q15_t in1, in2; /* Temporary input variables */ +#endif + + /* Loop unrolling: Compute 4 outputs at a time */ + blkCnt = blockSize >> 2U; + + /* If the shift value is positive then do right shift else left shift */ + if (sign == 0U) + { + while (blkCnt > 0U) + { + /* C = A << shiftBits */ + +#if defined (ARM_MATH_DSP) + /* read 2 samples from source */ + in1 = *pSrc++; + in2 = *pSrc++; + + /* Shift the inputs and then store the results in the destination buffer. */ +#ifndef ARM_MATH_BIG_ENDIAN + write_q15x2_ia (&pDst, __PKHBT(__SSAT((in1 << shiftBits), 16), + __SSAT((in2 << shiftBits), 16), 16)); +#else + write_q15x2_ia (&pDst, __PKHBT(__SSAT((in2 << shiftBits), 16), + __SSAT((in1 << shiftBits), 16), 16)); +#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ + + /* read 2 samples from source */ + in1 = *pSrc++; + in2 = *pSrc++; + +#ifndef ARM_MATH_BIG_ENDIAN + write_q15x2_ia (&pDst, __PKHBT(__SSAT((in1 << shiftBits), 16), + __SSAT((in2 << shiftBits), 16), 16)); +#else + write_q15x2_ia (&pDst, __PKHBT(__SSAT((in2 << shiftBits), 16), + __SSAT((in1 << shiftBits), 16), 16)); +#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ + +#else + *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); + *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); + *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); + *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); +#endif + + /* Decrement loop counter */ + blkCnt--; + } + } + else + { + while (blkCnt > 0U) + { + /* C = A >> shiftBits */ + +#if defined (ARM_MATH_DSP) + /* read 2 samples from source */ + in1 = *pSrc++; + in2 = *pSrc++; + + /* Shift the inputs and then store the results in the destination buffer. */ +#ifndef ARM_MATH_BIG_ENDIAN + write_q15x2_ia (&pDst, __PKHBT((in1 >> -shiftBits), + (in2 >> -shiftBits), 16)); +#else + write_q15x2_ia (&pDst, __PKHBT((in2 >> -shiftBits), + (in1 >> -shiftBits), 16)); +#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ + + /* read 2 samples from source */ + in1 = *pSrc++; + in2 = *pSrc++; + +#ifndef ARM_MATH_BIG_ENDIAN + write_q15x2_ia (&pDst, __PKHBT((in1 >> -shiftBits), + (in2 >> -shiftBits), 16)); +#else + write_q15x2_ia (&pDst, __PKHBT((in2 >> -shiftBits), + (in1 >> -shiftBits), 16)); +#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ + +#else + *pDst++ = (*pSrc++ >> -shiftBits); + *pDst++ = (*pSrc++ >> -shiftBits); + *pDst++ = (*pSrc++ >> -shiftBits); + *pDst++ = (*pSrc++ >> -shiftBits); +#endif + + /* 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) */ + + /* If the shift value is positive then do right shift else left shift */ + if (sign == 0U) + { + while (blkCnt > 0U) + { + /* C = A << shiftBits */ + + /* Shift input and store result in destination buffer. */ + *pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16); + + /* Decrement loop counter */ + blkCnt--; + } + } + else + { + while (blkCnt > 0U) + { + /* C = A >> shiftBits */ + + /* Shift input and store result in destination buffer. */ + *pDst++ = (*pSrc++ >> -shiftBits); + + /* Decrement loop counter */ + blkCnt--; + } + } + +} + +/** + @} end of BasicShift group + */ -- cgit v1.2.3