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 --- .../DSP/Source/MatrixFunctions/arm_mat_scale_q31.c | 191 +++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 fw/cdc-dials/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_q31.c (limited to 'fw/cdc-dials/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_q31.c') diff --git a/fw/cdc-dials/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_q31.c b/fw/cdc-dials/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_q31.c new file mode 100644 index 0000000..1b2b373 --- /dev/null +++ b/fw/cdc-dials/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_scale_q31.c @@ -0,0 +1,191 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_mat_scale_q31.c + * Description: Multiplies a Q31 matrix by a scalar + * + * $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 groupMatrix + */ + +/** + * @addtogroup MatrixScale + * @{ + */ + +/** + * @brief Q31 matrix scaling. + * @param[in] *pSrc points to input matrix + * @param[in] scaleFract fractional portion of the scale factor + * @param[in] shift number of bits to shift the result by + * @param[out] *pDst points to output matrix structure + * @return The function returns either + * ARM_MATH_SIZE_MISMATCH or ARM_MATH_SUCCESS based on the outcome of size checking. + * + * @details + * Scaling and Overflow Behavior: + * \par + * The input data *pSrc and scaleFract are in 1.31 format. + * These are multiplied to yield a 2.62 intermediate result and this is shifted with saturation to 1.31 format. + */ + +arm_status arm_mat_scale_q31( + const arm_matrix_instance_q31 * pSrc, + q31_t scaleFract, + int32_t shift, + arm_matrix_instance_q31 * pDst) +{ + q31_t *pIn = pSrc->pData; /* input data matrix pointer */ + q31_t *pOut = pDst->pData; /* output data matrix pointer */ + uint32_t numSamples; /* total number of elements in the matrix */ + int32_t totShift = shift + 1; /* shift to apply after scaling */ + uint32_t blkCnt; /* loop counters */ + arm_status status; /* status of matrix scaling */ + q31_t in1, in2, out1; /* temporary variabels */ + +#if defined (ARM_MATH_DSP) + + q31_t in3, in4, out2, out3, out4; /* temporary variables */ + +#endif // #ifndef ARM_MAT_CM0 + +#ifdef ARM_MATH_MATRIX_CHECK + /* Check for matrix mismatch */ + if ((pSrc->numRows != pDst->numRows) || (pSrc->numCols != pDst->numCols)) + { + /* Set status as ARM_MATH_SIZE_MISMATCH */ + status = ARM_MATH_SIZE_MISMATCH; + } + else +#endif // #ifdef ARM_MATH_MATRIX_CHECK + { + /* Total number of samples in the input matrix */ + numSamples = (uint32_t) pSrc->numRows * pSrc->numCols; + +#if defined (ARM_MATH_DSP) + + /* Run the below code for Cortex-M4 and Cortex-M3 */ + + /* 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(m,n) = A(m,n) * k */ + /* Read values from input */ + in1 = *pIn; + in2 = *(pIn + 1); + in3 = *(pIn + 2); + in4 = *(pIn + 3); + + /* multiply input with scaler value */ + in1 = ((q63_t) in1 * scaleFract) >> 32; + in2 = ((q63_t) in2 * scaleFract) >> 32; + in3 = ((q63_t) in3 * scaleFract) >> 32; + in4 = ((q63_t) in4 * scaleFract) >> 32; + + /* apply shifting */ + out1 = in1 << totShift; + out2 = in2 << totShift; + + /* saturate the results. */ + if (in1 != (out1 >> totShift)) + out1 = 0x7FFFFFFF ^ (in1 >> 31); + + if (in2 != (out2 >> totShift)) + out2 = 0x7FFFFFFF ^ (in2 >> 31); + + out3 = in3 << totShift; + out4 = in4 << totShift; + + *pOut = out1; + *(pOut + 1) = out2; + + if (in3 != (out3 >> totShift)) + out3 = 0x7FFFFFFF ^ (in3 >> 31); + + if (in4 != (out4 >> totShift)) + out4 = 0x7FFFFFFF ^ (in4 >> 31); + + + *(pOut + 2) = out3; + *(pOut + 3) = out4; + + /* update pointers to process next sampels */ + pIn += 4U; + pOut += 4U; + + + /* 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; + +#else + + /* Run the below code for Cortex-M0 */ + + /* Initialize blkCnt with number of samples */ + blkCnt = numSamples; + +#endif /* #if defined (ARM_MATH_DSP) */ + + while (blkCnt > 0U) + { + /* C(m,n) = A(m,n) * k */ + /* Scale, saturate and then store the results in the destination buffer. */ + in1 = *pIn++; + + in2 = ((q63_t) in1 * scaleFract) >> 32; + + out1 = in2 << totShift; + + if (in2 != (out1 >> totShift)) + out1 = 0x7FFFFFFF ^ (in2 >> 31); + + *pOut++ = out1; + + /* Decrement the numSamples loop counter */ + blkCnt--; + } + + /* Set status as ARM_MATH_SUCCESS */ + status = ARM_MATH_SUCCESS; + } + + /* Return to application */ + return (status); +} + +/** + * @} end of MatrixScale group + */ -- cgit