diff options
Diffstat (limited to 'Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_trans_q15.c')
| -rw-r--r-- | Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_trans_q15.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_trans_q15.c b/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_trans_q15.c new file mode 100644 index 0000000..3774e83 --- /dev/null +++ b/Drivers/CMSIS/DSP/Source/MatrixFunctions/arm_mat_trans_q15.c @@ -0,0 +1,182 @@ +/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Library
+ * Title: arm_mat_trans_q15.c
+ * Description: Q15 matrix transpose
+ *
+ * $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 groupMatrix
+ */
+
+/**
+ @addtogroup MatrixTrans
+ @{
+ */
+
+/**
+ @brief Q15 matrix transpose.
+ @param[in] pSrc points to input matrix
+ @param[out] pDst points to output matrix
+ @return execution status
+ - \ref ARM_MATH_SUCCESS : Operation successful
+ - \ref ARM_MATH_SIZE_MISMATCH : Matrix size check failed
+ */
+
+arm_status arm_mat_trans_q15(
+ const arm_matrix_instance_q15 * pSrc,
+ arm_matrix_instance_q15 * pDst)
+{
+ q15_t *pIn = pSrc->pData; /* input data matrix pointer */
+ q15_t *pOut = pDst->pData; /* output data matrix pointer */
+ uint16_t nRows = pSrc->numRows; /* number of rows */
+ uint16_t nCols = pSrc->numCols; /* number of columns */
+ uint32_t col, row = nRows, i = 0U; /* Loop counters */
+ arm_status status; /* status of matrix transpose */
+
+#if defined (ARM_MATH_LOOPUNROLL)
+ q31_t in; /* variable to hold temporary output */
+#endif
+
+#ifdef ARM_MATH_MATRIX_CHECK
+
+ /* Check for matrix mismatch condition */
+ if ((pSrc->numRows != pDst->numCols) ||
+ (pSrc->numCols != pDst->numRows) )
+ {
+ /* Set status as ARM_MATH_SIZE_MISMATCH */
+ status = ARM_MATH_SIZE_MISMATCH;
+ }
+ else
+
+#endif /* #ifdef ARM_MATH_MATRIX_CHECK */
+
+ {
+ /* Matrix transpose by exchanging the rows with columns */
+ /* row loop */
+ do
+ {
+ /* Pointer pOut is set to starting address of column being processed */
+ pOut = pDst->pData + i;
+
+#if defined (ARM_MATH_LOOPUNROLL)
+
+ /* Loop unrolling: Compute 4 outputs at a time */
+ col = nCols >> 2U;
+
+ while (col > 0U) /* column loop */
+ {
+ /* Read two elements from row */
+ in = read_q15x2_ia ((q15_t **) &pIn);
+
+ /* Unpack and store one element in destination */
+#ifndef ARM_MATH_BIG_ENDIAN
+ *pOut = (q15_t) in;
+#else
+ *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16);
+#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
+
+ /* Update pointer pOut to point to next row of transposed matrix */
+ pOut += nRows;
+
+ /* Unpack and store second element in destination */
+#ifndef ARM_MATH_BIG_ENDIAN
+ *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16);
+#else
+ *pOut = (q15_t) in;
+#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
+
+ /* Update pointer pOut to point to next row of transposed matrix */
+ pOut += nRows;
+
+ /* Read two elements from row */
+ in = read_q15x2_ia ((q15_t **) &pIn);
+
+ /* Unpack and store one element in destination */
+#ifndef ARM_MATH_BIG_ENDIAN
+ *pOut = (q15_t) in;
+#else
+ *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16);
+
+#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
+
+ /* Update pointer pOut to point to next row of transposed matrix */
+ pOut += nRows;
+
+ /* Unpack and store second element in destination */
+#ifndef ARM_MATH_BIG_ENDIAN
+ *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16);
+#else
+ *pOut = (q15_t) in;
+#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
+
+ /* Update pointer pOut to point to next row of transposed matrix */
+ pOut += nRows;
+
+ /* Decrement column loop counter */
+ col--;
+ }
+
+ /* Loop unrolling: Compute remaining outputs */
+ col = nCols % 0x4U;
+
+#else
+
+ /* Initialize col with number of samples */
+ col = nCols;
+
+#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
+
+ while (col > 0U)
+ {
+ /* Read and store input element in destination */
+ *pOut = *pIn++;
+
+ /* Update pointer pOut to point to next row of transposed matrix */
+ pOut += nRows;
+
+ /* Decrement column loop counter */
+ col--;
+ }
+
+ i++;
+
+ /* Decrement row loop counter */
+ row--;
+
+ } while (row > 0U); /* row loop end */
+
+ /* Set status as ARM_MATH_SUCCESS */
+ status = ARM_MATH_SUCCESS;
+ }
+
+ /* Return to application */
+ return (status);
+}
+
+/**
+ @} end of MatrixTrans group
+ */
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