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_mult_real_q15.c | 191 +++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_q15.c (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_q15.c') diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_q15.c b/fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_q15.c new file mode 100644 index 0000000..abafc3b --- /dev/null +++ b/fw/midi-dials/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mult_real_q15.c @@ -0,0 +1,191 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_cmplx_mult_real_q15.c + * Description: Q15 complex by real multiplication + * + * $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 CmplxByRealMult + * @{ + */ + + +/** + * @brief Q15 complex-by-real multiplication + * @param[in] *pSrcCmplx points to the complex input vector + * @param[in] *pSrcReal points to the real input vector + * @param[out] *pCmplxDst points to the complex output vector + * @param[in] numSamples number of samples in each vector + * @return none. + * + * Scaling and Overflow Behavior: + * \par + * The function uses saturating arithmetic. + * Results outside of the allowable Q15 range [0x8000 0x7FFF] will be saturated. + */ + +void arm_cmplx_mult_real_q15( + q15_t * pSrcCmplx, + q15_t * pSrcReal, + q15_t * pCmplxDst, + uint32_t numSamples) +{ + q15_t in; /* Temporary variable to store input value */ + +#if defined (ARM_MATH_DSP) + + /* Run the below code for Cortex-M4 and Cortex-M3 */ + uint32_t blkCnt; /* loop counters */ + q31_t inA1, inA2; /* Temporary variables to hold input data */ + q31_t inB1; /* Temporary variables to hold input data */ + q15_t out1, out2, out3, out4; /* Temporary variables to hold output data */ + q31_t mul1, mul2, mul3, mul4; /* Temporary variables to hold intermediate data */ + + /* 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) + { + /* C[2 * i] = A[2 * i] * B[i]. */ + /* C[2 * i + 1] = A[2 * i + 1] * B[i]. */ + /* read complex number both real and imaginary from complex input buffer */ + inA1 = *__SIMD32(pSrcCmplx)++; + /* read two real values at a time from real input buffer */ + inB1 = *__SIMD32(pSrcReal)++; + /* read complex number both real and imaginary from complex input buffer */ + inA2 = *__SIMD32(pSrcCmplx)++; + + /* multiply complex number with real numbers */ +#ifndef ARM_MATH_BIG_ENDIAN + + mul1 = (q31_t) ((q15_t) (inA1) * (q15_t) (inB1)); + mul2 = (q31_t) ((q15_t) (inA1 >> 16) * (q15_t) (inB1)); + mul3 = (q31_t) ((q15_t) (inA2) * (q15_t) (inB1 >> 16)); + mul4 = (q31_t) ((q15_t) (inA2 >> 16) * (q15_t) (inB1 >> 16)); + +#else + + mul2 = (q31_t) ((q15_t) (inA1 >> 16) * (q15_t) (inB1 >> 16)); + mul1 = (q31_t) ((q15_t) inA1 * (q15_t) (inB1 >> 16)); + mul4 = (q31_t) ((q15_t) (inA2 >> 16) * (q15_t) inB1); + mul3 = (q31_t) ((q15_t) inA2 * (q15_t) inB1); + +#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ + + /* saturate the result */ + out1 = (q15_t) __SSAT(mul1 >> 15U, 16); + out2 = (q15_t) __SSAT(mul2 >> 15U, 16); + out3 = (q15_t) __SSAT(mul3 >> 15U, 16); + out4 = (q15_t) __SSAT(mul4 >> 15U, 16); + + /* pack real and imaginary outputs and store them to destination */ + *__SIMD32(pCmplxDst)++ = __PKHBT(out1, out2, 16); + *__SIMD32(pCmplxDst)++ = __PKHBT(out3, out4, 16); + + inA1 = *__SIMD32(pSrcCmplx)++; + inB1 = *__SIMD32(pSrcReal)++; + inA2 = *__SIMD32(pSrcCmplx)++; + +#ifndef ARM_MATH_BIG_ENDIAN + + mul1 = (q31_t) ((q15_t) (inA1) * (q15_t) (inB1)); + mul2 = (q31_t) ((q15_t) (inA1 >> 16) * (q15_t) (inB1)); + mul3 = (q31_t) ((q15_t) (inA2) * (q15_t) (inB1 >> 16)); + mul4 = (q31_t) ((q15_t) (inA2 >> 16) * (q15_t) (inB1 >> 16)); + +#else + + mul2 = (q31_t) ((q15_t) (inA1 >> 16) * (q15_t) (inB1 >> 16)); + mul1 = (q31_t) ((q15_t) inA1 * (q15_t) (inB1 >> 16)); + mul4 = (q31_t) ((q15_t) (inA2 >> 16) * (q15_t) inB1); + mul3 = (q31_t) ((q15_t) inA2 * (q15_t) inB1); + +#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ + + out1 = (q15_t) __SSAT(mul1 >> 15U, 16); + out2 = (q15_t) __SSAT(mul2 >> 15U, 16); + out3 = (q15_t) __SSAT(mul3 >> 15U, 16); + out4 = (q15_t) __SSAT(mul4 >> 15U, 16); + + *__SIMD32(pCmplxDst)++ = __PKHBT(out1, out2, 16); + *__SIMD32(pCmplxDst)++ = __PKHBT(out3, out4, 16); + + /* Decrement the numSamples 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; + + while (blkCnt > 0U) + { + /* C[2 * i] = A[2 * i] * B[i]. */ + /* C[2 * i + 1] = A[2 * i + 1] * B[i]. */ + in = *pSrcReal++; + /* store the result in the destination buffer. */ + *pCmplxDst++ = + (q15_t) __SSAT((((q31_t) (*pSrcCmplx++) * (in)) >> 15), 16); + *pCmplxDst++ = + (q15_t) __SSAT((((q31_t) (*pSrcCmplx++) * (in)) >> 15), 16); + + /* Decrement the numSamples loop counter */ + blkCnt--; + } + +#else + + /* Run the below code for Cortex-M0 */ + + while (numSamples > 0U) + { + /* realOut = realA * realB. */ + /* imagOut = imagA * realB. */ + in = *pSrcReal++; + /* store the result in the destination buffer. */ + *pCmplxDst++ = + (q15_t) __SSAT((((q31_t) (*pSrcCmplx++) * (in)) >> 15), 16); + *pCmplxDst++ = + (q15_t) __SSAT((((q31_t) (*pSrcCmplx++) * (in)) >> 15), 16); + + /* Decrement the numSamples loop counter */ + numSamples--; + } + +#endif /* #if defined (ARM_MATH_DSP) */ + +} + +/** + * @} end of CmplxByRealMult group + */ -- cgit