From 86608c6770cf08c138a2bdab5855072f64be09ef Mon Sep 17 00:00:00 2001 From: joshua Date: Sat, 30 Dec 2023 23:54:31 -0500 Subject: initial commit --- .../ComplexMathFunctions/arm_cmplx_mag_q15.c | 162 +++++++++++++++++++++ 1 file changed, 162 insertions(+) create mode 100644 Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q15.c (limited to 'Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q15.c') diff --git a/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q15.c b/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q15.c new file mode 100644 index 0000000..a5b45b5 --- /dev/null +++ b/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q15.c @@ -0,0 +1,162 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_cmplx_mag_q15.c + * Description: Q15 complex magnitude + * + * $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 groupCmplxMath + */ + +/** + @addtogroup cmplx_mag + @{ + */ + +/** + @brief Q15 complex magnitude. + @param[in] pSrc points to input vector + @param[out] pDst points to output vector + @param[in] numSamples number of samples in each vector + @return none + + @par Scaling and Overflow Behavior + The function implements 1.15 by 1.15 multiplications and finally output is converted into 2.14 format. + */ + +void arm_cmplx_mag_q15( + const q15_t * pSrc, + q15_t * pDst, + uint32_t numSamples) +{ + uint32_t blkCnt; /* Loop counter */ + +#if defined (ARM_MATH_DSP) + q31_t in; + q31_t acc0; /* Accumulators */ +#else + q15_t real, imag; /* Temporary input variables */ + q31_t acc0, acc1; /* Accumulators */ +#endif + +#if defined (ARM_MATH_LOOPUNROLL) + + /* Loop unrolling: Compute 4 outputs at a time */ + blkCnt = numSamples >> 2U; + + while (blkCnt > 0U) + { + /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */ + +#if defined (ARM_MATH_DSP) + in = read_q15x2_ia ((q15_t **) &pSrc); + acc0 = __SMUAD(in, in); + /* store result in 2.14 format in destination buffer. */ + arm_sqrt_q15((q15_t) (acc0 >> 17), pDst++); + + in = read_q15x2_ia ((q15_t **) &pSrc); + acc0 = __SMUAD(in, in); + arm_sqrt_q15((q15_t) (acc0 >> 17), pDst++); + + in = read_q15x2_ia ((q15_t **) &pSrc); + acc0 = __SMUAD(in, in); + arm_sqrt_q15((q15_t) (acc0 >> 17), pDst++); + + in = read_q15x2_ia ((q15_t **) &pSrc); + acc0 = __SMUAD(in, in); + arm_sqrt_q15((q15_t) (acc0 >> 17), pDst++); +#else + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + + /* store result in 2.14 format in destination buffer. */ + arm_sqrt_q15((q15_t) (((q63_t) acc0 + acc1) >> 17), pDst++); + + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + arm_sqrt_q15((q15_t) (((q63_t) acc0 + acc1) >> 17), pDst++); + + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + arm_sqrt_q15((q15_t) (((q63_t) acc0 + acc1) >> 17), pDst++); + + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + arm_sqrt_q15((q15_t) (((q63_t) acc0 + acc1) >> 17), pDst++); +#endif /* #if defined (ARM_MATH_DSP) */ + + /* Decrement loop counter */ + blkCnt--; + } + + /* Loop unrolling: Compute remaining outputs */ + blkCnt = numSamples % 0x4U; + +#else + + /* Initialize blkCnt with number of samples */ + blkCnt = numSamples; + +#endif /* #if defined (ARM_MATH_LOOPUNROLL) */ + + while (blkCnt > 0U) + { + /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */ + +#if defined (ARM_MATH_DSP) + in = read_q15x2_ia ((q15_t **) &pSrc); + acc0 = __SMUAD(in, in); + + /* store result in 2.14 format in destination buffer. */ + arm_sqrt_q15((q15_t) (acc0 >> 17), pDst++); +#else + real = *pSrc++; + imag = *pSrc++; + acc0 = ((q31_t) real * real); + acc1 = ((q31_t) imag * imag); + + /* store result in 2.14 format in destination buffer. */ + arm_sqrt_q15((q15_t) (((q63_t) acc0 + acc1) >> 17), pDst++); +#endif + + /* Decrement loop counter */ + blkCnt--; + } + +} + +/** + @} end of cmplx_mag group + */ -- cgit v1.2.3