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/* ----------------------------------------------------------------------
* Project: CMSIS DSP Library
* Title: arm_mat_cmplx_trans_f32.c
* Description: Floating-point complex matrix transpose
*
* $Date: 23 April 2021
* $Revision: V1.9.0
*
* Target Processor: Cortex-M and Cortex-A cores
* -------------------------------------------------------------------- */
/*
* Copyright (C) 2010-2021 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 "dsp/matrix_functions.h"
/**
@ingroup groupMatrix
*/
/**
@defgroup MatrixComplexTrans Complex Matrix Transpose
Tranposes a complex matrix.
Transposing an <code>M x N</code> matrix flips it around the center diagonal and results in an <code>N x M</code> matrix.
\image html MatrixTranspose.gif "Transpose of a 3 x 3 matrix"
*/
/**
@addtogroup MatrixComplexTrans
@{
*/
/**
@brief Floating-point 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
*/
#if defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE)
#include "arm_helium_utils.h"
arm_status arm_mat_cmplx_trans_f32(const arm_matrix_instance_f32 * pSrc, arm_matrix_instance_f32 * pDst)
{
return arm_mat_cmplx_trans_32bit(pSrc->numRows, pSrc->numCols, (uint32_t *) pSrc->pData,
pDst->numRows, pDst->numCols, (uint32_t *) pDst->pData);
}
#else
arm_status arm_mat_cmplx_trans_f32(
const arm_matrix_instance_f32 * pSrc,
arm_matrix_instance_f32 * pDst)
{
float32_t *pIn = pSrc->pData; /* input data matrix pointer */
float32_t *pOut = pDst->pData; /* output data matrix pointer */
float32_t *px; /* Temporary output data matrix pointer */
uint16_t nRows = pSrc->numRows; /* number of rows */
uint16_t nColumns = pSrc->numCols; /* number of columns */
uint16_t col, i = 0U, row = nRows; /* loop counters */
arm_status status; /* status of matrix transpose */
#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
{
/* The pointer px is set to starting address of the column being processed */
px = pOut + CMPLX_DIM * i;
/* Initialize column loop counter */
col = nColumns;
while (col > 0U)
{
/* Read and store the input element in the destination */
px[0] = *pIn++; // real
px[1] = *pIn++; // imag
/* Update the pointer px to point to the next row of the transposed matrix */
px += CMPLX_DIM * nRows;
/* Decrement the column loop counter */
col--;
}
i++;
/* Decrement the 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);
}
#endif /* defined(ARM_MATH_MVEF) && !defined(ARM_MATH_AUTOVECTORIZE) */
/**
* @} end of MatrixTrans group
*/
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