From 6ab94e0b318884bbcb95e2ea3835f951502e1d99 Mon Sep 17 00:00:00 2001 From: jaseg Date: Wed, 14 Oct 2020 12:47:28 +0200 Subject: Move firmware into subdirectory --- .../ComplexMathFunctions/arm_cmplx_mag_q31.c | 173 +++++++++++++++++++++ 1 file changed, 173 insertions(+) create mode 100644 fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q31.c (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q31.c') diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q31.c b/fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q31.c new file mode 100644 index 0000000..c1fdfdf --- /dev/null +++ b/fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_q31.c @@ -0,0 +1,173 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_cmplx_mag_q31.c + * Description: Q31 complex magnitude + * + * $Date: 27. January 2017 + * $Revision: V.1.5.1 + * + * Target Processor: Cortex-M cores + * -------------------------------------------------------------------- */ +/* + * Copyright (C) 2010-2017 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 Q31 complex magnitude + * @param *pSrc points to the complex input vector + * @param *pDst points to the real output vector + * @param numSamples number of complex samples in the input vector + * @return none. + * + * Scaling and Overflow Behavior: + * \par + * The function implements 1.31 by 1.31 multiplications and finally output is converted into 2.30 format. + * Input down scaling is not required. + */ + +void arm_cmplx_mag_q31( + q31_t * pSrc, + q31_t * pDst, + uint32_t numSamples) +{ + q31_t real, imag; /* Temporary variables to hold input values */ + q31_t acc0, acc1; /* Accumulators */ + uint32_t blkCnt; /* loop counter */ + +#if defined (ARM_MATH_DSP) + + /* Run the below code for Cortex-M4 and Cortex-M3 */ + q31_t real1, real2, imag1, imag2; /* Temporary variables to hold input values */ + q31_t out1, out2, out3, out4; /* Accumulators */ + q63_t mul1, mul2, mul3, mul4; /* Temporary variables */ + + + /*loop Unrolling */ + blkCnt = numSamples >> 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) + { + /* read complex input from source buffer */ + real1 = pSrc[0]; + imag1 = pSrc[1]; + real2 = pSrc[2]; + imag2 = pSrc[3]; + + /* calculate power of input values */ + mul1 = (q63_t) real1 *real1; + mul2 = (q63_t) imag1 *imag1; + mul3 = (q63_t) real2 *real2; + mul4 = (q63_t) imag2 *imag2; + + /* get the result to 3.29 format */ + out1 = (q31_t) (mul1 >> 33); + out2 = (q31_t) (mul2 >> 33); + out3 = (q31_t) (mul3 >> 33); + out4 = (q31_t) (mul4 >> 33); + + /* add real and imaginary accumulators */ + out1 = out1 + out2; + out3 = out3 + out4; + + /* read complex input from source buffer */ + real1 = pSrc[4]; + imag1 = pSrc[5]; + real2 = pSrc[6]; + imag2 = pSrc[7]; + + /* calculate square root */ + arm_sqrt_q31(out1, &pDst[0]); + + /* calculate power of input values */ + mul1 = (q63_t) real1 *real1; + + /* calculate square root */ + arm_sqrt_q31(out3, &pDst[1]); + + /* calculate power of input values */ + mul2 = (q63_t) imag1 *imag1; + mul3 = (q63_t) real2 *real2; + mul4 = (q63_t) imag2 *imag2; + + /* get the result to 3.29 format */ + out1 = (q31_t) (mul1 >> 33); + out2 = (q31_t) (mul2 >> 33); + out3 = (q31_t) (mul3 >> 33); + out4 = (q31_t) (mul4 >> 33); + + /* add real and imaginary accumulators */ + out1 = out1 + out2; + out3 = out3 + out4; + + /* calculate square root */ + arm_sqrt_q31(out1, &pDst[2]); + + /* increment destination by 8 to process next samples */ + pSrc += 8U; + + /* calculate square root */ + arm_sqrt_q31(out3, &pDst[3]); + + /* increment destination by 4 to process next samples */ + pDst += 4U; + + /* Decrement the loop counter */ + blkCnt--; + } + + /* If the numSamples is not a multiple of 4, compute any remaining output samples here. + ** No loop unrolling is used. */ + blkCnt = numSamples % 0x4U; + +#else + + /* Run the below code for Cortex-M0 */ + blkCnt = numSamples; + +#endif /* #if defined (ARM_MATH_DSP) */ + + while (blkCnt > 0U) + { + /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */ + real = *pSrc++; + imag = *pSrc++; + acc0 = (q31_t) (((q63_t) real * real) >> 33); + acc1 = (q31_t) (((q63_t) imag * imag) >> 33); + /* store the result in 2.30 format in the destination buffer. */ + arm_sqrt_q31(acc0 + acc1, pDst++); + + /* Decrement the loop counter */ + blkCnt--; + } +} + +/** + * @} end of cmplx_mag group + */ -- cgit