From a81fc41c3eb99e8fc52aa734ee63e13c937aab81 Mon Sep 17 00:00:00 2001 From: JanHenrik Date: Sun, 19 Jan 2020 00:56:37 +0100 Subject: added blink example --- .../DSP/Source/MatrixFunctions/arm_mat_sub_f32.c | 197 +++++++++++++++++++++ 1 file changed, 197 insertions(+) create mode 100644 Blink/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_sub_f32.c (limited to 'Blink/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_sub_f32.c') diff --git a/Blink/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_sub_f32.c b/Blink/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_sub_f32.c new file mode 100644 index 0000000..42eaadb --- /dev/null +++ b/Blink/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_sub_f32.c @@ -0,0 +1,197 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_mat_sub_f32.c + * Description: Floating-point matrix subtraction + * + * $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 + */ + +/** + * @defgroup MatrixSub Matrix Subtraction + * + * Subtract two matrices. + * \image html MatrixSubtraction.gif "Subraction of two 3 x 3 matrices" + * + * The functions check to make sure that + * pSrcA, pSrcB, and pDst have the same + * number of rows and columns. + */ + +/** + * @addtogroup MatrixSub + * @{ + */ + +/** + * @brief Floating-point matrix subtraction + * @param[in] *pSrcA points to the first input matrix structure + * @param[in] *pSrcB points to the second input matrix structure + * @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. + */ + +arm_status arm_mat_sub_f32( + const arm_matrix_instance_f32 * pSrcA, + const arm_matrix_instance_f32 * pSrcB, + arm_matrix_instance_f32 * pDst) +{ + float32_t *pIn1 = pSrcA->pData; /* input data matrix pointer A */ + float32_t *pIn2 = pSrcB->pData; /* input data matrix pointer B */ + float32_t *pOut = pDst->pData; /* output data matrix pointer */ + +#if defined (ARM_MATH_DSP) + + float32_t inA1, inA2, inB1, inB2, out1, out2; /* temporary variables */ + +#endif // #if defined (ARM_MATH_DSP) + + uint32_t numSamples; /* total number of elements in the matrix */ + uint32_t blkCnt; /* loop counters */ + arm_status status; /* status of matrix subtraction */ + +#ifdef ARM_MATH_MATRIX_CHECK + /* Check for matrix mismatch condition */ + if ((pSrcA->numRows != pSrcB->numRows) || + (pSrcA->numCols != pSrcB->numCols) || + (pSrcA->numRows != pDst->numRows) || (pSrcA->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) pSrcA->numRows * pSrcA->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) - B(m,n) */ + /* Subtract and then store the results in the destination buffer. */ + /* Read values from source A */ + inA1 = pIn1[0]; + + /* Read values from source B */ + inB1 = pIn2[0]; + + /* Read values from source A */ + inA2 = pIn1[1]; + + /* out = sourceA - sourceB */ + out1 = inA1 - inB1; + + /* Read values from source B */ + inB2 = pIn2[1]; + + /* Read values from source A */ + inA1 = pIn1[2]; + + /* out = sourceA - sourceB */ + out2 = inA2 - inB2; + + /* Read values from source B */ + inB1 = pIn2[2]; + + /* Store result in destination */ + pOut[0] = out1; + pOut[1] = out2; + + /* Read values from source A */ + inA2 = pIn1[3]; + + /* Read values from source B */ + inB2 = pIn2[3]; + + /* out = sourceA - sourceB */ + out1 = inA1 - inB1; + + + /* out = sourceA - sourceB */ + out2 = inA2 - inB2; + + /* Store result in destination */ + pOut[2] = out1; + + /* Store result in destination */ + pOut[3] = out2; + + + /* update pointers to process next sampels */ + pIn1 += 4U; + pIn2 += 4U; + pOut += 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 */ + + /* Initialize blkCnt with number of samples */ + blkCnt = numSamples; + +#endif /* #if defined (ARM_MATH_DSP) */ + + while (blkCnt > 0U) + { + /* C(m,n) = A(m,n) - B(m,n) */ + /* Subtract and then store the results in the destination buffer. */ + *pOut++ = (*pIn1++) - (*pIn2++); + + /* Decrement the loop counter */ + blkCnt--; + } + + /* Set status as ARM_MATH_SUCCESS */ + status = ARM_MATH_SUCCESS; + } + + /* Return to application */ + return (status); +} + +/** + * @} end of MatrixSub group + */ -- cgit