|
|
/* ----------------------------------------------------------------------
|
|
|
* Copyright (C) 2010 ARM Limited. All rights reserved.
|
|
|
*
|
|
|
* $Date: 15. July 2011
|
|
|
* $Revision: V1.0.10
|
|
|
*
|
|
|
* Project: CMSIS DSP Library
|
|
|
* Title: arm_mat_trans_q15.c
|
|
|
*
|
|
|
* Description: Q15 matrix transpose.
|
|
|
*
|
|
|
* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
|
|
|
*
|
|
|
* Version 1.0.10 2011/7/15
|
|
|
* Big Endian support added and Merged M0 and M3/M4 Source code.
|
|
|
*
|
|
|
* Version 1.0.3 2010/11/29
|
|
|
* Re-organized the CMSIS folders and updated documentation.
|
|
|
*
|
|
|
* Version 1.0.2 2010/11/11
|
|
|
* Documentation updated.
|
|
|
*
|
|
|
* Version 1.0.1 2010/10/05
|
|
|
* Production release and review comments incorporated.
|
|
|
*
|
|
|
* Version 1.0.0 2010/09/20
|
|
|
* Production release and review comments incorporated.
|
|
|
*
|
|
|
* Version 0.0.5 2010/04/26
|
|
|
* incorporated review comments and updated with latest CMSIS layer
|
|
|
*
|
|
|
* Version 0.0.3 2010/03/10
|
|
|
* Initial version
|
|
|
* -------------------------------------------------------------------- */
|
|
|
|
|
|
#include "arm_math.h"
|
|
|
|
|
|
/**
|
|
|
* @ingroup groupMatrix
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @addtogroup MatrixTrans
|
|
|
* @{
|
|
|
*/
|
|
|
|
|
|
/*
|
|
|
* @brief Q15 matrix transpose.
|
|
|
* @param[in] *pSrc points to the input matrix
|
|
|
* @param[out] *pDst points to the output matrix
|
|
|
* @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code>
|
|
|
* or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
|
*/
|
|
|
|
|
|
arm_status arm_mat_trans_q15(
|
|
|
const arm_matrix_instance_q15 * pSrc,
|
|
|
arm_matrix_instance_q15 * pDst)
|
|
|
{
|
|
|
q15_t *pSrcA = pSrc->pData; /* input data matrix pointer */
|
|
|
q15_t *pOut = pDst->pData; /* output data matrix pointer */
|
|
|
uint16_t nRows = pSrc->numRows; /* number of nRows */
|
|
|
uint16_t nColumns = pSrc->numCols; /* number of nColumns */
|
|
|
uint16_t col, row = nRows, i = 0u; /* row and column loop counters */
|
|
|
arm_status status; /* status of matrix transpose */
|
|
|
|
|
|
#ifndef ARM_MATH_CM0
|
|
|
|
|
|
/* Run the below code for Cortex-M4 and Cortex-M3 */
|
|
|
|
|
|
q31_t in; /* variable to hold temporary output */
|
|
|
|
|
|
|
|
|
#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
|
|
|
{
|
|
|
/* Apply loop unrolling and exchange the columns with row elements */
|
|
|
col = nColumns >> 2u;
|
|
|
|
|
|
/* The pointer pOut is set to starting address of the column being processed */
|
|
|
pOut = pDst->pData + i;
|
|
|
|
|
|
/* 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(col > 0u)
|
|
|
{
|
|
|
/* Read two elements from the row */
|
|
|
in = *__SIMD32(pSrcA)++;
|
|
|
|
|
|
/* Unpack and store one element in the 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 the pointer pOut to point to the next row of the transposed matrix */
|
|
|
pOut += nRows;
|
|
|
|
|
|
/* Unpack and store the second element in the 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 the pointer pOut to point to the next row of the transposed matrix */
|
|
|
pOut += nRows;
|
|
|
|
|
|
/* Read two elements from the row */
|
|
|
#ifndef ARM_MATH_BIG_ENDIAN
|
|
|
|
|
|
in = *__SIMD32(pSrcA)++;
|
|
|
|
|
|
#else
|
|
|
|
|
|
in = *__SIMD32(pSrcA)++;
|
|
|
|
|
|
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
|
|
|
|
|
|
/* Unpack and store one element in the 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 the pointer pOut to point to the next row of the transposed matrix */
|
|
|
pOut += nRows;
|
|
|
|
|
|
/* Unpack and store the second element in the 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 the pointer pOut to point to the next row of the transposed matrix */
|
|
|
pOut += nRows;
|
|
|
|
|
|
/* Decrement the column loop counter */
|
|
|
col--;
|
|
|
}
|
|
|
|
|
|
/* Perform matrix transpose for last 3 samples here. */
|
|
|
col = nColumns % 0x4u;
|
|
|
|
|
|
#else
|
|
|
|
|
|
/* Run the below code for Cortex-M0 */
|
|
|
|
|
|
#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 pOut is set to starting address of the column being processed */
|
|
|
pOut = pDst->pData + i;
|
|
|
|
|
|
/* Initialize column loop counter */
|
|
|
col = nColumns;
|
|
|
|
|
|
#endif /* #ifndef ARM_MATH_CM0 */
|
|
|
|
|
|
while(col > 0u)
|
|
|
{
|
|
|
/* Read and store the input element in the destination */
|
|
|
*pOut = *pSrcA++;
|
|
|
|
|
|
/* Update the pointer pOut to point to the next row of the transposed matrix */
|
|
|
pOut += nRows;
|
|
|
|
|
|
/* Decrement the column loop counter */
|
|
|
col--;
|
|
|
}
|
|
|
|
|
|
i++;
|
|
|
|
|
|
/* Decrement the row loop counter */
|
|
|
row--;
|
|
|
|
|
|
} while(row > 0u);
|
|
|
|
|
|
/* set status as ARM_MATH_SUCCESS */
|
|
|
status = ARM_MATH_SUCCESS;
|
|
|
}
|
|
|
/* Return to application */
|
|
|
return (status);
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* @} end of MatrixTrans group
|
|
|
*/
|
|
|
|