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functions/MatrixFunctions/arm_mat_trans_q15.c@3:4098b9d3d571, 2018-06-21 (annotated)
- Committer:
- xorjoep
- Date:
- Thu Jun 21 11:56:27 2018 +0000
- Revision:
- 3:4098b9d3d571
- Parent:
- 1:24714b45cd1b
headers is a folder not a library
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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xorjoep | 1:24714b45cd1b | 1 | /* ---------------------------------------------------------------------- |
xorjoep | 1:24714b45cd1b | 2 | * Project: CMSIS DSP Library |
xorjoep | 1:24714b45cd1b | 3 | * Title: arm_mat_trans_q15.c |
xorjoep | 1:24714b45cd1b | 4 | * Description: Q15 matrix transpose |
xorjoep | 1:24714b45cd1b | 5 | * |
xorjoep | 1:24714b45cd1b | 6 | * $Date: 27. January 2017 |
xorjoep | 1:24714b45cd1b | 7 | * $Revision: V.1.5.1 |
xorjoep | 1:24714b45cd1b | 8 | * |
xorjoep | 1:24714b45cd1b | 9 | * Target Processor: Cortex-M cores |
xorjoep | 1:24714b45cd1b | 10 | * -------------------------------------------------------------------- */ |
xorjoep | 1:24714b45cd1b | 11 | /* |
xorjoep | 1:24714b45cd1b | 12 | * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved. |
xorjoep | 1:24714b45cd1b | 13 | * |
xorjoep | 1:24714b45cd1b | 14 | * SPDX-License-Identifier: Apache-2.0 |
xorjoep | 1:24714b45cd1b | 15 | * |
xorjoep | 1:24714b45cd1b | 16 | * Licensed under the Apache License, Version 2.0 (the License); you may |
xorjoep | 1:24714b45cd1b | 17 | * not use this file except in compliance with the License. |
xorjoep | 1:24714b45cd1b | 18 | * You may obtain a copy of the License at |
xorjoep | 1:24714b45cd1b | 19 | * |
xorjoep | 1:24714b45cd1b | 20 | * www.apache.org/licenses/LICENSE-2.0 |
xorjoep | 1:24714b45cd1b | 21 | * |
xorjoep | 1:24714b45cd1b | 22 | * Unless required by applicable law or agreed to in writing, software |
xorjoep | 1:24714b45cd1b | 23 | * distributed under the License is distributed on an AS IS BASIS, WITHOUT |
xorjoep | 1:24714b45cd1b | 24 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
xorjoep | 1:24714b45cd1b | 25 | * See the License for the specific language governing permissions and |
xorjoep | 1:24714b45cd1b | 26 | * limitations under the License. |
xorjoep | 1:24714b45cd1b | 27 | */ |
xorjoep | 1:24714b45cd1b | 28 | |
xorjoep | 1:24714b45cd1b | 29 | #include "arm_math.h" |
xorjoep | 1:24714b45cd1b | 30 | |
xorjoep | 1:24714b45cd1b | 31 | /** |
xorjoep | 1:24714b45cd1b | 32 | * @ingroup groupMatrix |
xorjoep | 1:24714b45cd1b | 33 | */ |
xorjoep | 1:24714b45cd1b | 34 | |
xorjoep | 1:24714b45cd1b | 35 | /** |
xorjoep | 1:24714b45cd1b | 36 | * @addtogroup MatrixTrans |
xorjoep | 1:24714b45cd1b | 37 | * @{ |
xorjoep | 1:24714b45cd1b | 38 | */ |
xorjoep | 1:24714b45cd1b | 39 | |
xorjoep | 1:24714b45cd1b | 40 | /* |
xorjoep | 1:24714b45cd1b | 41 | * @brief Q15 matrix transpose. |
xorjoep | 1:24714b45cd1b | 42 | * @param[in] *pSrc points to the input matrix |
xorjoep | 1:24714b45cd1b | 43 | * @param[out] *pDst points to the output matrix |
xorjoep | 1:24714b45cd1b | 44 | * @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code> |
xorjoep | 1:24714b45cd1b | 45 | * or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking. |
xorjoep | 1:24714b45cd1b | 46 | */ |
xorjoep | 1:24714b45cd1b | 47 | |
xorjoep | 1:24714b45cd1b | 48 | arm_status arm_mat_trans_q15( |
xorjoep | 1:24714b45cd1b | 49 | const arm_matrix_instance_q15 * pSrc, |
xorjoep | 1:24714b45cd1b | 50 | arm_matrix_instance_q15 * pDst) |
xorjoep | 1:24714b45cd1b | 51 | { |
xorjoep | 1:24714b45cd1b | 52 | q15_t *pSrcA = pSrc->pData; /* input data matrix pointer */ |
xorjoep | 1:24714b45cd1b | 53 | q15_t *pOut = pDst->pData; /* output data matrix pointer */ |
xorjoep | 1:24714b45cd1b | 54 | uint16_t nRows = pSrc->numRows; /* number of nRows */ |
xorjoep | 1:24714b45cd1b | 55 | uint16_t nColumns = pSrc->numCols; /* number of nColumns */ |
xorjoep | 1:24714b45cd1b | 56 | uint16_t col, row = nRows, i = 0U; /* row and column loop counters */ |
xorjoep | 1:24714b45cd1b | 57 | arm_status status; /* status of matrix transpose */ |
xorjoep | 1:24714b45cd1b | 58 | |
xorjoep | 1:24714b45cd1b | 59 | #if defined (ARM_MATH_DSP) |
xorjoep | 1:24714b45cd1b | 60 | |
xorjoep | 1:24714b45cd1b | 61 | /* Run the below code for Cortex-M4 and Cortex-M3 */ |
xorjoep | 1:24714b45cd1b | 62 | #ifndef UNALIGNED_SUPPORT_DISABLE |
xorjoep | 1:24714b45cd1b | 63 | |
xorjoep | 1:24714b45cd1b | 64 | q31_t in; /* variable to hold temporary output */ |
xorjoep | 1:24714b45cd1b | 65 | |
xorjoep | 1:24714b45cd1b | 66 | #else |
xorjoep | 1:24714b45cd1b | 67 | |
xorjoep | 1:24714b45cd1b | 68 | q15_t in; |
xorjoep | 1:24714b45cd1b | 69 | |
xorjoep | 1:24714b45cd1b | 70 | #endif /* #ifndef UNALIGNED_SUPPORT_DISABLE */ |
xorjoep | 1:24714b45cd1b | 71 | |
xorjoep | 1:24714b45cd1b | 72 | #ifdef ARM_MATH_MATRIX_CHECK |
xorjoep | 1:24714b45cd1b | 73 | |
xorjoep | 1:24714b45cd1b | 74 | |
xorjoep | 1:24714b45cd1b | 75 | /* Check for matrix mismatch condition */ |
xorjoep | 1:24714b45cd1b | 76 | if ((pSrc->numRows != pDst->numCols) || (pSrc->numCols != pDst->numRows)) |
xorjoep | 1:24714b45cd1b | 77 | { |
xorjoep | 1:24714b45cd1b | 78 | /* Set status as ARM_MATH_SIZE_MISMATCH */ |
xorjoep | 1:24714b45cd1b | 79 | status = ARM_MATH_SIZE_MISMATCH; |
xorjoep | 1:24714b45cd1b | 80 | } |
xorjoep | 1:24714b45cd1b | 81 | else |
xorjoep | 1:24714b45cd1b | 82 | #endif /* #ifdef ARM_MATH_MATRIX_CHECK */ |
xorjoep | 1:24714b45cd1b | 83 | |
xorjoep | 1:24714b45cd1b | 84 | { |
xorjoep | 1:24714b45cd1b | 85 | /* Matrix transpose by exchanging the rows with columns */ |
xorjoep | 1:24714b45cd1b | 86 | /* row loop */ |
xorjoep | 1:24714b45cd1b | 87 | do |
xorjoep | 1:24714b45cd1b | 88 | { |
xorjoep | 1:24714b45cd1b | 89 | |
xorjoep | 1:24714b45cd1b | 90 | /* Apply loop unrolling and exchange the columns with row elements */ |
xorjoep | 1:24714b45cd1b | 91 | col = nColumns >> 2U; |
xorjoep | 1:24714b45cd1b | 92 | |
xorjoep | 1:24714b45cd1b | 93 | /* The pointer pOut is set to starting address of the column being processed */ |
xorjoep | 1:24714b45cd1b | 94 | pOut = pDst->pData + i; |
xorjoep | 1:24714b45cd1b | 95 | |
xorjoep | 1:24714b45cd1b | 96 | /* First part of the processing with loop unrolling. Compute 4 outputs at a time. |
xorjoep | 1:24714b45cd1b | 97 | ** a second loop below computes the remaining 1 to 3 samples. */ |
xorjoep | 1:24714b45cd1b | 98 | while (col > 0U) |
xorjoep | 1:24714b45cd1b | 99 | { |
xorjoep | 1:24714b45cd1b | 100 | #ifndef UNALIGNED_SUPPORT_DISABLE |
xorjoep | 1:24714b45cd1b | 101 | |
xorjoep | 1:24714b45cd1b | 102 | /* Read two elements from the row */ |
xorjoep | 1:24714b45cd1b | 103 | in = *__SIMD32(pSrcA)++; |
xorjoep | 1:24714b45cd1b | 104 | |
xorjoep | 1:24714b45cd1b | 105 | /* Unpack and store one element in the destination */ |
xorjoep | 1:24714b45cd1b | 106 | #ifndef ARM_MATH_BIG_ENDIAN |
xorjoep | 1:24714b45cd1b | 107 | |
xorjoep | 1:24714b45cd1b | 108 | *pOut = (q15_t) in; |
xorjoep | 1:24714b45cd1b | 109 | |
xorjoep | 1:24714b45cd1b | 110 | #else |
xorjoep | 1:24714b45cd1b | 111 | |
xorjoep | 1:24714b45cd1b | 112 | *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16); |
xorjoep | 1:24714b45cd1b | 113 | |
xorjoep | 1:24714b45cd1b | 114 | #endif /* #ifndef ARM_MATH_BIG_ENDIAN */ |
xorjoep | 1:24714b45cd1b | 115 | |
xorjoep | 1:24714b45cd1b | 116 | /* Update the pointer pOut to point to the next row of the transposed matrix */ |
xorjoep | 1:24714b45cd1b | 117 | pOut += nRows; |
xorjoep | 1:24714b45cd1b | 118 | |
xorjoep | 1:24714b45cd1b | 119 | /* Unpack and store the second element in the destination */ |
xorjoep | 1:24714b45cd1b | 120 | |
xorjoep | 1:24714b45cd1b | 121 | #ifndef ARM_MATH_BIG_ENDIAN |
xorjoep | 1:24714b45cd1b | 122 | |
xorjoep | 1:24714b45cd1b | 123 | *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16); |
xorjoep | 1:24714b45cd1b | 124 | |
xorjoep | 1:24714b45cd1b | 125 | #else |
xorjoep | 1:24714b45cd1b | 126 | |
xorjoep | 1:24714b45cd1b | 127 | *pOut = (q15_t) in; |
xorjoep | 1:24714b45cd1b | 128 | |
xorjoep | 1:24714b45cd1b | 129 | #endif /* #ifndef ARM_MATH_BIG_ENDIAN */ |
xorjoep | 1:24714b45cd1b | 130 | |
xorjoep | 1:24714b45cd1b | 131 | /* Update the pointer pOut to point to the next row of the transposed matrix */ |
xorjoep | 1:24714b45cd1b | 132 | pOut += nRows; |
xorjoep | 1:24714b45cd1b | 133 | |
xorjoep | 1:24714b45cd1b | 134 | /* Read two elements from the row */ |
xorjoep | 1:24714b45cd1b | 135 | #ifndef ARM_MATH_BIG_ENDIAN |
xorjoep | 1:24714b45cd1b | 136 | |
xorjoep | 1:24714b45cd1b | 137 | in = *__SIMD32(pSrcA)++; |
xorjoep | 1:24714b45cd1b | 138 | |
xorjoep | 1:24714b45cd1b | 139 | #else |
xorjoep | 1:24714b45cd1b | 140 | |
xorjoep | 1:24714b45cd1b | 141 | in = *__SIMD32(pSrcA)++; |
xorjoep | 1:24714b45cd1b | 142 | |
xorjoep | 1:24714b45cd1b | 143 | #endif /* #ifndef ARM_MATH_BIG_ENDIAN */ |
xorjoep | 1:24714b45cd1b | 144 | |
xorjoep | 1:24714b45cd1b | 145 | /* Unpack and store one element in the destination */ |
xorjoep | 1:24714b45cd1b | 146 | #ifndef ARM_MATH_BIG_ENDIAN |
xorjoep | 1:24714b45cd1b | 147 | |
xorjoep | 1:24714b45cd1b | 148 | *pOut = (q15_t) in; |
xorjoep | 1:24714b45cd1b | 149 | |
xorjoep | 1:24714b45cd1b | 150 | #else |
xorjoep | 1:24714b45cd1b | 151 | |
xorjoep | 1:24714b45cd1b | 152 | *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16); |
xorjoep | 1:24714b45cd1b | 153 | |
xorjoep | 1:24714b45cd1b | 154 | #endif /* #ifndef ARM_MATH_BIG_ENDIAN */ |
xorjoep | 1:24714b45cd1b | 155 | |
xorjoep | 1:24714b45cd1b | 156 | /* Update the pointer pOut to point to the next row of the transposed matrix */ |
xorjoep | 1:24714b45cd1b | 157 | pOut += nRows; |
xorjoep | 1:24714b45cd1b | 158 | |
xorjoep | 1:24714b45cd1b | 159 | /* Unpack and store the second element in the destination */ |
xorjoep | 1:24714b45cd1b | 160 | #ifndef ARM_MATH_BIG_ENDIAN |
xorjoep | 1:24714b45cd1b | 161 | |
xorjoep | 1:24714b45cd1b | 162 | *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16); |
xorjoep | 1:24714b45cd1b | 163 | |
xorjoep | 1:24714b45cd1b | 164 | #else |
xorjoep | 1:24714b45cd1b | 165 | |
xorjoep | 1:24714b45cd1b | 166 | *pOut = (q15_t) in; |
xorjoep | 1:24714b45cd1b | 167 | |
xorjoep | 1:24714b45cd1b | 168 | #endif /* #ifndef ARM_MATH_BIG_ENDIAN */ |
xorjoep | 1:24714b45cd1b | 169 | |
xorjoep | 1:24714b45cd1b | 170 | #else |
xorjoep | 1:24714b45cd1b | 171 | /* Read one element from the row */ |
xorjoep | 1:24714b45cd1b | 172 | in = *pSrcA++; |
xorjoep | 1:24714b45cd1b | 173 | |
xorjoep | 1:24714b45cd1b | 174 | /* Store one element in the destination */ |
xorjoep | 1:24714b45cd1b | 175 | *pOut = in; |
xorjoep | 1:24714b45cd1b | 176 | |
xorjoep | 1:24714b45cd1b | 177 | /* Update the pointer px to point to the next row of the transposed matrix */ |
xorjoep | 1:24714b45cd1b | 178 | pOut += nRows; |
xorjoep | 1:24714b45cd1b | 179 | |
xorjoep | 1:24714b45cd1b | 180 | /* Read one element from the row */ |
xorjoep | 1:24714b45cd1b | 181 | in = *pSrcA++; |
xorjoep | 1:24714b45cd1b | 182 | |
xorjoep | 1:24714b45cd1b | 183 | /* Store one element in the destination */ |
xorjoep | 1:24714b45cd1b | 184 | *pOut = in; |
xorjoep | 1:24714b45cd1b | 185 | |
xorjoep | 1:24714b45cd1b | 186 | /* Update the pointer px to point to the next row of the transposed matrix */ |
xorjoep | 1:24714b45cd1b | 187 | pOut += nRows; |
xorjoep | 1:24714b45cd1b | 188 | |
xorjoep | 1:24714b45cd1b | 189 | /* Read one element from the row */ |
xorjoep | 1:24714b45cd1b | 190 | in = *pSrcA++; |
xorjoep | 1:24714b45cd1b | 191 | |
xorjoep | 1:24714b45cd1b | 192 | /* Store one element in the destination */ |
xorjoep | 1:24714b45cd1b | 193 | *pOut = in; |
xorjoep | 1:24714b45cd1b | 194 | |
xorjoep | 1:24714b45cd1b | 195 | /* Update the pointer px to point to the next row of the transposed matrix */ |
xorjoep | 1:24714b45cd1b | 196 | pOut += nRows; |
xorjoep | 1:24714b45cd1b | 197 | |
xorjoep | 1:24714b45cd1b | 198 | /* Read one element from the row */ |
xorjoep | 1:24714b45cd1b | 199 | in = *pSrcA++; |
xorjoep | 1:24714b45cd1b | 200 | |
xorjoep | 1:24714b45cd1b | 201 | /* Store one element in the destination */ |
xorjoep | 1:24714b45cd1b | 202 | *pOut = in; |
xorjoep | 1:24714b45cd1b | 203 | |
xorjoep | 1:24714b45cd1b | 204 | #endif /* #ifndef UNALIGNED_SUPPORT_DISABLE */ |
xorjoep | 1:24714b45cd1b | 205 | |
xorjoep | 1:24714b45cd1b | 206 | /* Update the pointer pOut to point to the next row of the transposed matrix */ |
xorjoep | 1:24714b45cd1b | 207 | pOut += nRows; |
xorjoep | 1:24714b45cd1b | 208 | |
xorjoep | 1:24714b45cd1b | 209 | /* Decrement the column loop counter */ |
xorjoep | 1:24714b45cd1b | 210 | col--; |
xorjoep | 1:24714b45cd1b | 211 | } |
xorjoep | 1:24714b45cd1b | 212 | |
xorjoep | 1:24714b45cd1b | 213 | /* Perform matrix transpose for last 3 samples here. */ |
xorjoep | 1:24714b45cd1b | 214 | col = nColumns % 0x4U; |
xorjoep | 1:24714b45cd1b | 215 | |
xorjoep | 1:24714b45cd1b | 216 | #else |
xorjoep | 1:24714b45cd1b | 217 | |
xorjoep | 1:24714b45cd1b | 218 | /* Run the below code for Cortex-M0 */ |
xorjoep | 1:24714b45cd1b | 219 | |
xorjoep | 1:24714b45cd1b | 220 | #ifdef ARM_MATH_MATRIX_CHECK |
xorjoep | 1:24714b45cd1b | 221 | |
xorjoep | 1:24714b45cd1b | 222 | /* Check for matrix mismatch condition */ |
xorjoep | 1:24714b45cd1b | 223 | if ((pSrc->numRows != pDst->numCols) || (pSrc->numCols != pDst->numRows)) |
xorjoep | 1:24714b45cd1b | 224 | { |
xorjoep | 1:24714b45cd1b | 225 | /* Set status as ARM_MATH_SIZE_MISMATCH */ |
xorjoep | 1:24714b45cd1b | 226 | status = ARM_MATH_SIZE_MISMATCH; |
xorjoep | 1:24714b45cd1b | 227 | } |
xorjoep | 1:24714b45cd1b | 228 | else |
xorjoep | 1:24714b45cd1b | 229 | #endif /* #ifdef ARM_MATH_MATRIX_CHECK */ |
xorjoep | 1:24714b45cd1b | 230 | |
xorjoep | 1:24714b45cd1b | 231 | { |
xorjoep | 1:24714b45cd1b | 232 | /* Matrix transpose by exchanging the rows with columns */ |
xorjoep | 1:24714b45cd1b | 233 | /* row loop */ |
xorjoep | 1:24714b45cd1b | 234 | do |
xorjoep | 1:24714b45cd1b | 235 | { |
xorjoep | 1:24714b45cd1b | 236 | /* The pointer pOut is set to starting address of the column being processed */ |
xorjoep | 1:24714b45cd1b | 237 | pOut = pDst->pData + i; |
xorjoep | 1:24714b45cd1b | 238 | |
xorjoep | 1:24714b45cd1b | 239 | /* Initialize column loop counter */ |
xorjoep | 1:24714b45cd1b | 240 | col = nColumns; |
xorjoep | 1:24714b45cd1b | 241 | |
xorjoep | 1:24714b45cd1b | 242 | #endif /* #if defined (ARM_MATH_DSP) */ |
xorjoep | 1:24714b45cd1b | 243 | |
xorjoep | 1:24714b45cd1b | 244 | while (col > 0U) |
xorjoep | 1:24714b45cd1b | 245 | { |
xorjoep | 1:24714b45cd1b | 246 | /* Read and store the input element in the destination */ |
xorjoep | 1:24714b45cd1b | 247 | *pOut = *pSrcA++; |
xorjoep | 1:24714b45cd1b | 248 | |
xorjoep | 1:24714b45cd1b | 249 | /* Update the pointer pOut to point to the next row of the transposed matrix */ |
xorjoep | 1:24714b45cd1b | 250 | pOut += nRows; |
xorjoep | 1:24714b45cd1b | 251 | |
xorjoep | 1:24714b45cd1b | 252 | /* Decrement the column loop counter */ |
xorjoep | 1:24714b45cd1b | 253 | col--; |
xorjoep | 1:24714b45cd1b | 254 | } |
xorjoep | 1:24714b45cd1b | 255 | |
xorjoep | 1:24714b45cd1b | 256 | i++; |
xorjoep | 1:24714b45cd1b | 257 | |
xorjoep | 1:24714b45cd1b | 258 | /* Decrement the row loop counter */ |
xorjoep | 1:24714b45cd1b | 259 | row--; |
xorjoep | 1:24714b45cd1b | 260 | |
xorjoep | 1:24714b45cd1b | 261 | } while (row > 0U); |
xorjoep | 1:24714b45cd1b | 262 | |
xorjoep | 1:24714b45cd1b | 263 | /* set status as ARM_MATH_SUCCESS */ |
xorjoep | 1:24714b45cd1b | 264 | status = ARM_MATH_SUCCESS; |
xorjoep | 1:24714b45cd1b | 265 | } |
xorjoep | 1:24714b45cd1b | 266 | /* Return to application */ |
xorjoep | 1:24714b45cd1b | 267 | return (status); |
xorjoep | 1:24714b45cd1b | 268 | } |
xorjoep | 1:24714b45cd1b | 269 | |
xorjoep | 1:24714b45cd1b | 270 | /** |
xorjoep | 1:24714b45cd1b | 271 | * @} end of MatrixTrans group |
xorjoep | 1:24714b45cd1b | 272 | */ |