Fork of mbed-dsp. CMSIS-DSP library of supporting NEON
Dependents: mbed-os-example-cmsis_dsp_neon
Fork of mbed-dsp by
Information
Japanese version is available in lower part of this page.
このページの後半に日本語版が用意されています.
CMSIS-DSP of supporting NEON
What is this ?
A library for CMSIS-DSP of supporting NEON.
We supported the NEON to CMSIS-DSP Ver1.4.3(CMSIS V4.1) that ARM supplied, has achieved the processing speed improvement.
If you use the mbed-dsp library, you can use to replace this library.
CMSIS-DSP of supporting NEON is provied as a library.
Library Creation environment
CMSIS-DSP library of supporting NEON was created by the following environment.
- Compiler
ARMCC Version 5.03 - Compile option switch[C Compiler]
-DARM_MATH_MATRIX_CHECK -DARM_MATH_ROUNDING -O3 -Otime --cpu=Cortex-A9 --littleend --arm --apcs=/interwork --no_unaligned_access --fpu=vfpv3_fp16 --fpmode=fast --apcs=/hardfp --vectorize --asm
- Compile option switch[Assembler]
--cpreproc --cpu=Cortex-A9 --littleend --arm --apcs=/interwork --no_unaligned_access --fpu=vfpv3_fp16 --fpmode=fast --apcs=/hardfp
Effects of NEON support
In the data which passes to each function, large size will be expected more effective than small size.
Also if the data is a multiple of 16, effect will be expected in every function in the CMSIS-DSP.
NEON対応CMSIS-DSP
概要
NEON対応したCMSIS-DSPのライブラリです。
ARM社提供のCMSIS-DSP Ver1.4.3(CMSIS V4.1)をターゲットにNEON対応を行ない、処理速度向上を実現しております。
mbed-dspライブラリを使用している場合は、本ライブラリに置き換えて使用することができます。
NEON対応したCMSIS-DSPはライブラリで提供します。
ライブラリ作成環境
NEON対応CMSIS-DSPライブラリは、以下の環境で作成しています。
- コンパイラ
ARMCC Version 5.03 - コンパイルオプションスイッチ[C Compiler]
-DARM_MATH_MATRIX_CHECK -DARM_MATH_ROUNDING -O3 -Otime --cpu=Cortex-A9 --littleend --arm --apcs=/interwork --no_unaligned_access --fpu=vfpv3_fp16 --fpmode=fast --apcs=/hardfp --vectorize --asm
- コンパイルオプションスイッチ[Assembler]
--cpreproc --cpu=Cortex-A9 --littleend --arm --apcs=/interwork --no_unaligned_access --fpu=vfpv3_fp16 --fpmode=fast --apcs=/hardfp
NEON対応による効果について
CMSIS-DSP内の各関数へ渡すデータは、小さいサイズよりも大きいサイズの方が効果が見込めます。
また、16の倍数のデータであれば、CMSIS-DSP内のどの関数でも効果が見込めます。
cmsis_dsp/MatrixFunctions/arm_mat_mult_f32.c@2:da51fb522205, 2013-05-30 (annotated)
- Committer:
- emilmont
- Date:
- Thu May 30 17:10:11 2013 +0100
- Revision:
- 2:da51fb522205
- Parent:
- 1:fdd22bb7aa52
- Child:
- 3:7a284390b0ce
Keep "cmsis-dsp" module in synch with its source
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
emilmont | 1:fdd22bb7aa52 | 1 | /* ---------------------------------------------------------------------- |
emilmont | 1:fdd22bb7aa52 | 2 | * Copyright (C) 2010 ARM Limited. All rights reserved. |
emilmont | 1:fdd22bb7aa52 | 3 | * |
emilmont | 1:fdd22bb7aa52 | 4 | * $Date: 15. February 2012 |
emilmont | 2:da51fb522205 | 5 | * $Revision: V1.1.0 |
emilmont | 1:fdd22bb7aa52 | 6 | * |
emilmont | 2:da51fb522205 | 7 | * Project: CMSIS DSP Library |
emilmont | 2:da51fb522205 | 8 | * Title: arm_mat_mult_f32.c |
emilmont | 1:fdd22bb7aa52 | 9 | * |
emilmont | 1:fdd22bb7aa52 | 10 | * Description: Floating-point matrix multiplication. |
emilmont | 1:fdd22bb7aa52 | 11 | * |
emilmont | 1:fdd22bb7aa52 | 12 | * Target Processor: Cortex-M4/Cortex-M3/Cortex-M0 |
emilmont | 1:fdd22bb7aa52 | 13 | * |
emilmont | 1:fdd22bb7aa52 | 14 | * Version 1.1.0 2012/02/15 |
emilmont | 1:fdd22bb7aa52 | 15 | * Updated with more optimizations, bug fixes and minor API changes. |
emilmont | 1:fdd22bb7aa52 | 16 | * |
emilmont | 1:fdd22bb7aa52 | 17 | * Version 1.0.10 2011/7/15 |
emilmont | 1:fdd22bb7aa52 | 18 | * Big Endian support added and Merged M0 and M3/M4 Source code. |
emilmont | 1:fdd22bb7aa52 | 19 | * |
emilmont | 1:fdd22bb7aa52 | 20 | * Version 1.0.3 2010/11/29 |
emilmont | 1:fdd22bb7aa52 | 21 | * Re-organized the CMSIS folders and updated documentation. |
emilmont | 1:fdd22bb7aa52 | 22 | * |
emilmont | 1:fdd22bb7aa52 | 23 | * Version 1.0.2 2010/11/11 |
emilmont | 1:fdd22bb7aa52 | 24 | * Documentation updated. |
emilmont | 1:fdd22bb7aa52 | 25 | * |
emilmont | 1:fdd22bb7aa52 | 26 | * Version 1.0.1 2010/10/05 |
emilmont | 1:fdd22bb7aa52 | 27 | * Production release and review comments incorporated. |
emilmont | 1:fdd22bb7aa52 | 28 | * |
emilmont | 1:fdd22bb7aa52 | 29 | * Version 1.0.0 2010/09/20 |
emilmont | 1:fdd22bb7aa52 | 30 | * Production release and review comments incorporated. |
emilmont | 1:fdd22bb7aa52 | 31 | * |
emilmont | 1:fdd22bb7aa52 | 32 | * Version 0.0.5 2010/04/26 |
emilmont | 1:fdd22bb7aa52 | 33 | * incorporated review comments and updated with latest CMSIS layer |
emilmont | 1:fdd22bb7aa52 | 34 | * |
emilmont | 1:fdd22bb7aa52 | 35 | * Version 0.0.3 2010/03/10 |
emilmont | 1:fdd22bb7aa52 | 36 | * Initial version |
emilmont | 1:fdd22bb7aa52 | 37 | * -------------------------------------------------------------------- */ |
emilmont | 1:fdd22bb7aa52 | 38 | |
emilmont | 1:fdd22bb7aa52 | 39 | #include "arm_math.h" |
emilmont | 1:fdd22bb7aa52 | 40 | |
emilmont | 1:fdd22bb7aa52 | 41 | /** |
emilmont | 1:fdd22bb7aa52 | 42 | * @ingroup groupMatrix |
emilmont | 1:fdd22bb7aa52 | 43 | */ |
emilmont | 1:fdd22bb7aa52 | 44 | |
emilmont | 1:fdd22bb7aa52 | 45 | /** |
emilmont | 1:fdd22bb7aa52 | 46 | * @defgroup MatrixMult Matrix Multiplication |
emilmont | 1:fdd22bb7aa52 | 47 | * |
emilmont | 1:fdd22bb7aa52 | 48 | * Multiplies two matrices. |
emilmont | 1:fdd22bb7aa52 | 49 | * |
emilmont | 1:fdd22bb7aa52 | 50 | * \image html MatrixMultiplication.gif "Multiplication of two 3 x 3 matrices" |
emilmont | 1:fdd22bb7aa52 | 51 | |
emilmont | 1:fdd22bb7aa52 | 52 | * Matrix multiplication is only defined if the number of columns of the |
emilmont | 1:fdd22bb7aa52 | 53 | * first matrix equals the number of rows of the second matrix. |
emilmont | 1:fdd22bb7aa52 | 54 | * Multiplying an <code>M x N</code> matrix with an <code>N x P</code> matrix results |
emilmont | 1:fdd22bb7aa52 | 55 | * in an <code>M x P</code> matrix. |
emilmont | 1:fdd22bb7aa52 | 56 | * When matrix size checking is enabled, the functions check: (1) that the inner dimensions of |
emilmont | 1:fdd22bb7aa52 | 57 | * <code>pSrcA</code> and <code>pSrcB</code> are equal; and (2) that the size of the output |
emilmont | 1:fdd22bb7aa52 | 58 | * matrix equals the outer dimensions of <code>pSrcA</code> and <code>pSrcB</code>. |
emilmont | 1:fdd22bb7aa52 | 59 | */ |
emilmont | 1:fdd22bb7aa52 | 60 | |
emilmont | 1:fdd22bb7aa52 | 61 | |
emilmont | 1:fdd22bb7aa52 | 62 | /** |
emilmont | 1:fdd22bb7aa52 | 63 | * @addtogroup MatrixMult |
emilmont | 1:fdd22bb7aa52 | 64 | * @{ |
emilmont | 1:fdd22bb7aa52 | 65 | */ |
emilmont | 1:fdd22bb7aa52 | 66 | |
emilmont | 1:fdd22bb7aa52 | 67 | /** |
emilmont | 1:fdd22bb7aa52 | 68 | * @brief Floating-point matrix multiplication. |
emilmont | 1:fdd22bb7aa52 | 69 | * @param[in] *pSrcA points to the first input matrix structure |
emilmont | 1:fdd22bb7aa52 | 70 | * @param[in] *pSrcB points to the second input matrix structure |
emilmont | 1:fdd22bb7aa52 | 71 | * @param[out] *pDst points to output matrix structure |
emilmont | 2:da51fb522205 | 72 | * @return The function returns either |
emilmont | 1:fdd22bb7aa52 | 73 | * <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking. |
emilmont | 1:fdd22bb7aa52 | 74 | */ |
emilmont | 1:fdd22bb7aa52 | 75 | |
emilmont | 1:fdd22bb7aa52 | 76 | arm_status arm_mat_mult_f32( |
emilmont | 1:fdd22bb7aa52 | 77 | const arm_matrix_instance_f32 * pSrcA, |
emilmont | 1:fdd22bb7aa52 | 78 | const arm_matrix_instance_f32 * pSrcB, |
emilmont | 1:fdd22bb7aa52 | 79 | arm_matrix_instance_f32 * pDst) |
emilmont | 1:fdd22bb7aa52 | 80 | { |
emilmont | 1:fdd22bb7aa52 | 81 | float32_t *pIn1 = pSrcA->pData; /* input data matrix pointer A */ |
emilmont | 1:fdd22bb7aa52 | 82 | float32_t *pIn2 = pSrcB->pData; /* input data matrix pointer B */ |
emilmont | 1:fdd22bb7aa52 | 83 | float32_t *pInA = pSrcA->pData; /* input data matrix pointer A */ |
emilmont | 1:fdd22bb7aa52 | 84 | float32_t *pOut = pDst->pData; /* output data matrix pointer */ |
emilmont | 1:fdd22bb7aa52 | 85 | float32_t *px; /* Temporary output data matrix pointer */ |
emilmont | 1:fdd22bb7aa52 | 86 | float32_t sum; /* Accumulator */ |
emilmont | 1:fdd22bb7aa52 | 87 | uint16_t numRowsA = pSrcA->numRows; /* number of rows of input matrix A */ |
emilmont | 1:fdd22bb7aa52 | 88 | uint16_t numColsB = pSrcB->numCols; /* number of columns of input matrix B */ |
emilmont | 1:fdd22bb7aa52 | 89 | uint16_t numColsA = pSrcA->numCols; /* number of columns of input matrix A */ |
emilmont | 1:fdd22bb7aa52 | 90 | |
emilmont | 1:fdd22bb7aa52 | 91 | #ifndef ARM_MATH_CM0 |
emilmont | 1:fdd22bb7aa52 | 92 | |
emilmont | 1:fdd22bb7aa52 | 93 | /* Run the below code for Cortex-M4 and Cortex-M3 */ |
emilmont | 1:fdd22bb7aa52 | 94 | |
emilmont | 1:fdd22bb7aa52 | 95 | float32_t in1, in2, in3, in4; |
emilmont | 1:fdd22bb7aa52 | 96 | uint16_t col, i = 0u, j, row = numRowsA, colCnt; /* loop counters */ |
emilmont | 1:fdd22bb7aa52 | 97 | arm_status status; /* status of matrix multiplication */ |
emilmont | 1:fdd22bb7aa52 | 98 | |
emilmont | 1:fdd22bb7aa52 | 99 | #ifdef ARM_MATH_MATRIX_CHECK |
emilmont | 1:fdd22bb7aa52 | 100 | |
emilmont | 1:fdd22bb7aa52 | 101 | |
emilmont | 1:fdd22bb7aa52 | 102 | /* Check for matrix mismatch condition */ |
emilmont | 1:fdd22bb7aa52 | 103 | if((pSrcA->numCols != pSrcB->numRows) || |
emilmont | 1:fdd22bb7aa52 | 104 | (pSrcA->numRows != pDst->numRows) || (pSrcB->numCols != pDst->numCols)) |
emilmont | 1:fdd22bb7aa52 | 105 | { |
emilmont | 1:fdd22bb7aa52 | 106 | |
emilmont | 1:fdd22bb7aa52 | 107 | /* Set status as ARM_MATH_SIZE_MISMATCH */ |
emilmont | 1:fdd22bb7aa52 | 108 | status = ARM_MATH_SIZE_MISMATCH; |
emilmont | 1:fdd22bb7aa52 | 109 | } |
emilmont | 1:fdd22bb7aa52 | 110 | else |
emilmont | 1:fdd22bb7aa52 | 111 | #endif /* #ifdef ARM_MATH_MATRIX_CHECK */ |
emilmont | 1:fdd22bb7aa52 | 112 | |
emilmont | 1:fdd22bb7aa52 | 113 | { |
emilmont | 1:fdd22bb7aa52 | 114 | /* The following loop performs the dot-product of each row in pSrcA with each column in pSrcB */ |
emilmont | 1:fdd22bb7aa52 | 115 | /* row loop */ |
emilmont | 1:fdd22bb7aa52 | 116 | do |
emilmont | 1:fdd22bb7aa52 | 117 | { |
emilmont | 1:fdd22bb7aa52 | 118 | /* Output pointer is set to starting address of the row being processed */ |
emilmont | 1:fdd22bb7aa52 | 119 | px = pOut + i; |
emilmont | 1:fdd22bb7aa52 | 120 | |
emilmont | 1:fdd22bb7aa52 | 121 | /* For every row wise process, the column loop counter is to be initiated */ |
emilmont | 1:fdd22bb7aa52 | 122 | col = numColsB; |
emilmont | 1:fdd22bb7aa52 | 123 | |
emilmont | 1:fdd22bb7aa52 | 124 | /* For every row wise process, the pIn2 pointer is set |
emilmont | 1:fdd22bb7aa52 | 125 | ** to the starting address of the pSrcB data */ |
emilmont | 1:fdd22bb7aa52 | 126 | pIn2 = pSrcB->pData; |
emilmont | 1:fdd22bb7aa52 | 127 | |
emilmont | 1:fdd22bb7aa52 | 128 | j = 0u; |
emilmont | 1:fdd22bb7aa52 | 129 | |
emilmont | 1:fdd22bb7aa52 | 130 | /* column loop */ |
emilmont | 1:fdd22bb7aa52 | 131 | do |
emilmont | 1:fdd22bb7aa52 | 132 | { |
emilmont | 1:fdd22bb7aa52 | 133 | /* Set the variable sum, that acts as accumulator, to zero */ |
emilmont | 1:fdd22bb7aa52 | 134 | sum = 0.0f; |
emilmont | 1:fdd22bb7aa52 | 135 | |
emilmont | 1:fdd22bb7aa52 | 136 | /* Initiate the pointer pIn1 to point to the starting address of the column being processed */ |
emilmont | 1:fdd22bb7aa52 | 137 | pIn1 = pInA; |
emilmont | 1:fdd22bb7aa52 | 138 | |
emilmont | 1:fdd22bb7aa52 | 139 | /* Apply loop unrolling and compute 4 MACs simultaneously. */ |
emilmont | 1:fdd22bb7aa52 | 140 | colCnt = numColsA >> 2u; |
emilmont | 1:fdd22bb7aa52 | 141 | |
emilmont | 1:fdd22bb7aa52 | 142 | /* matrix multiplication */ |
emilmont | 1:fdd22bb7aa52 | 143 | while(colCnt > 0u) |
emilmont | 1:fdd22bb7aa52 | 144 | { |
emilmont | 1:fdd22bb7aa52 | 145 | /* c(m,n) = a(1,1)*b(1,1) + a(1,2) * b(2,1) + .... + a(m,p)*b(p,n) */ |
emilmont | 1:fdd22bb7aa52 | 146 | in3 = *pIn2; |
emilmont | 1:fdd22bb7aa52 | 147 | pIn2 += numColsB; |
emilmont | 1:fdd22bb7aa52 | 148 | in1 = pIn1[0]; |
emilmont | 1:fdd22bb7aa52 | 149 | in2 = pIn1[1]; |
emilmont | 1:fdd22bb7aa52 | 150 | sum += in1 * in3; |
emilmont | 1:fdd22bb7aa52 | 151 | in4 = *pIn2; |
emilmont | 1:fdd22bb7aa52 | 152 | pIn2 += numColsB; |
emilmont | 1:fdd22bb7aa52 | 153 | sum += in2 * in4; |
emilmont | 1:fdd22bb7aa52 | 154 | |
emilmont | 1:fdd22bb7aa52 | 155 | in3 = *pIn2; |
emilmont | 1:fdd22bb7aa52 | 156 | pIn2 += numColsB; |
emilmont | 1:fdd22bb7aa52 | 157 | in1 = pIn1[2]; |
emilmont | 1:fdd22bb7aa52 | 158 | in2 = pIn1[3]; |
emilmont | 1:fdd22bb7aa52 | 159 | sum += in1 * in3; |
emilmont | 1:fdd22bb7aa52 | 160 | in4 = *pIn2; |
emilmont | 1:fdd22bb7aa52 | 161 | pIn2 += numColsB; |
emilmont | 1:fdd22bb7aa52 | 162 | sum += in2 * in4; |
emilmont | 1:fdd22bb7aa52 | 163 | pIn1 += 4u; |
emilmont | 1:fdd22bb7aa52 | 164 | |
emilmont | 1:fdd22bb7aa52 | 165 | /* Decrement the loop count */ |
emilmont | 1:fdd22bb7aa52 | 166 | colCnt--; |
emilmont | 1:fdd22bb7aa52 | 167 | } |
emilmont | 1:fdd22bb7aa52 | 168 | |
emilmont | 1:fdd22bb7aa52 | 169 | /* If the columns of pSrcA is not a multiple of 4, compute any remaining MACs here. |
emilmont | 1:fdd22bb7aa52 | 170 | ** No loop unrolling is used. */ |
emilmont | 1:fdd22bb7aa52 | 171 | colCnt = numColsA % 0x4u; |
emilmont | 1:fdd22bb7aa52 | 172 | |
emilmont | 1:fdd22bb7aa52 | 173 | while(colCnt > 0u) |
emilmont | 1:fdd22bb7aa52 | 174 | { |
emilmont | 1:fdd22bb7aa52 | 175 | /* c(m,n) = a(1,1)*b(1,1) + a(1,2) * b(2,1) + .... + a(m,p)*b(p,n) */ |
emilmont | 1:fdd22bb7aa52 | 176 | sum += *pIn1++ * (*pIn2); |
emilmont | 1:fdd22bb7aa52 | 177 | pIn2 += numColsB; |
emilmont | 1:fdd22bb7aa52 | 178 | |
emilmont | 1:fdd22bb7aa52 | 179 | /* Decrement the loop counter */ |
emilmont | 1:fdd22bb7aa52 | 180 | colCnt--; |
emilmont | 1:fdd22bb7aa52 | 181 | } |
emilmont | 1:fdd22bb7aa52 | 182 | |
emilmont | 1:fdd22bb7aa52 | 183 | /* Store the result in the destination buffer */ |
emilmont | 1:fdd22bb7aa52 | 184 | *px++ = sum; |
emilmont | 1:fdd22bb7aa52 | 185 | |
emilmont | 1:fdd22bb7aa52 | 186 | /* Update the pointer pIn2 to point to the starting address of the next column */ |
emilmont | 1:fdd22bb7aa52 | 187 | j++; |
emilmont | 1:fdd22bb7aa52 | 188 | pIn2 = pSrcB->pData + j; |
emilmont | 1:fdd22bb7aa52 | 189 | |
emilmont | 1:fdd22bb7aa52 | 190 | /* Decrement the column loop counter */ |
emilmont | 1:fdd22bb7aa52 | 191 | col--; |
emilmont | 1:fdd22bb7aa52 | 192 | |
emilmont | 1:fdd22bb7aa52 | 193 | } while(col > 0u); |
emilmont | 1:fdd22bb7aa52 | 194 | |
emilmont | 1:fdd22bb7aa52 | 195 | #else |
emilmont | 1:fdd22bb7aa52 | 196 | |
emilmont | 1:fdd22bb7aa52 | 197 | /* Run the below code for Cortex-M0 */ |
emilmont | 1:fdd22bb7aa52 | 198 | |
emilmont | 1:fdd22bb7aa52 | 199 | float32_t *pInB = pSrcB->pData; /* input data matrix pointer B */ |
emilmont | 1:fdd22bb7aa52 | 200 | uint16_t col, i = 0u, row = numRowsA, colCnt; /* loop counters */ |
emilmont | 1:fdd22bb7aa52 | 201 | arm_status status; /* status of matrix multiplication */ |
emilmont | 1:fdd22bb7aa52 | 202 | |
emilmont | 1:fdd22bb7aa52 | 203 | #ifdef ARM_MATH_MATRIX_CHECK |
emilmont | 1:fdd22bb7aa52 | 204 | |
emilmont | 1:fdd22bb7aa52 | 205 | /* Check for matrix mismatch condition */ |
emilmont | 1:fdd22bb7aa52 | 206 | if((pSrcA->numCols != pSrcB->numRows) || |
emilmont | 1:fdd22bb7aa52 | 207 | (pSrcA->numRows != pDst->numRows) || (pSrcB->numCols != pDst->numCols)) |
emilmont | 1:fdd22bb7aa52 | 208 | { |
emilmont | 1:fdd22bb7aa52 | 209 | |
emilmont | 1:fdd22bb7aa52 | 210 | /* Set status as ARM_MATH_SIZE_MISMATCH */ |
emilmont | 1:fdd22bb7aa52 | 211 | status = ARM_MATH_SIZE_MISMATCH; |
emilmont | 1:fdd22bb7aa52 | 212 | } |
emilmont | 1:fdd22bb7aa52 | 213 | else |
emilmont | 1:fdd22bb7aa52 | 214 | #endif /* #ifdef ARM_MATH_MATRIX_CHECK */ |
emilmont | 1:fdd22bb7aa52 | 215 | |
emilmont | 1:fdd22bb7aa52 | 216 | { |
emilmont | 1:fdd22bb7aa52 | 217 | /* The following loop performs the dot-product of each row in pInA with each column in pInB */ |
emilmont | 1:fdd22bb7aa52 | 218 | /* row loop */ |
emilmont | 1:fdd22bb7aa52 | 219 | do |
emilmont | 1:fdd22bb7aa52 | 220 | { |
emilmont | 1:fdd22bb7aa52 | 221 | /* Output pointer is set to starting address of the row being processed */ |
emilmont | 1:fdd22bb7aa52 | 222 | px = pOut + i; |
emilmont | 1:fdd22bb7aa52 | 223 | |
emilmont | 1:fdd22bb7aa52 | 224 | /* For every row wise process, the column loop counter is to be initiated */ |
emilmont | 1:fdd22bb7aa52 | 225 | col = numColsB; |
emilmont | 1:fdd22bb7aa52 | 226 | |
emilmont | 1:fdd22bb7aa52 | 227 | /* For every row wise process, the pIn2 pointer is set |
emilmont | 1:fdd22bb7aa52 | 228 | ** to the starting address of the pSrcB data */ |
emilmont | 1:fdd22bb7aa52 | 229 | pIn2 = pSrcB->pData; |
emilmont | 1:fdd22bb7aa52 | 230 | |
emilmont | 1:fdd22bb7aa52 | 231 | /* column loop */ |
emilmont | 1:fdd22bb7aa52 | 232 | do |
emilmont | 1:fdd22bb7aa52 | 233 | { |
emilmont | 1:fdd22bb7aa52 | 234 | /* Set the variable sum, that acts as accumulator, to zero */ |
emilmont | 1:fdd22bb7aa52 | 235 | sum = 0.0f; |
emilmont | 1:fdd22bb7aa52 | 236 | |
emilmont | 1:fdd22bb7aa52 | 237 | /* Initialize the pointer pIn1 to point to the starting address of the row being processed */ |
emilmont | 1:fdd22bb7aa52 | 238 | pIn1 = pInA; |
emilmont | 1:fdd22bb7aa52 | 239 | |
emilmont | 1:fdd22bb7aa52 | 240 | /* Matrix A columns number of MAC operations are to be performed */ |
emilmont | 1:fdd22bb7aa52 | 241 | colCnt = numColsA; |
emilmont | 1:fdd22bb7aa52 | 242 | |
emilmont | 1:fdd22bb7aa52 | 243 | while(colCnt > 0u) |
emilmont | 1:fdd22bb7aa52 | 244 | { |
emilmont | 1:fdd22bb7aa52 | 245 | /* c(m,n) = a(1,1)*b(1,1) + a(1,2) * b(2,1) + .... + a(m,p)*b(p,n) */ |
emilmont | 1:fdd22bb7aa52 | 246 | sum += *pIn1++ * (*pIn2); |
emilmont | 1:fdd22bb7aa52 | 247 | pIn2 += numColsB; |
emilmont | 1:fdd22bb7aa52 | 248 | |
emilmont | 1:fdd22bb7aa52 | 249 | /* Decrement the loop counter */ |
emilmont | 1:fdd22bb7aa52 | 250 | colCnt--; |
emilmont | 1:fdd22bb7aa52 | 251 | } |
emilmont | 1:fdd22bb7aa52 | 252 | |
emilmont | 1:fdd22bb7aa52 | 253 | /* Store the result in the destination buffer */ |
emilmont | 1:fdd22bb7aa52 | 254 | *px++ = sum; |
emilmont | 1:fdd22bb7aa52 | 255 | |
emilmont | 1:fdd22bb7aa52 | 256 | /* Decrement the column loop counter */ |
emilmont | 1:fdd22bb7aa52 | 257 | col--; |
emilmont | 1:fdd22bb7aa52 | 258 | |
emilmont | 1:fdd22bb7aa52 | 259 | /* Update the pointer pIn2 to point to the starting address of the next column */ |
emilmont | 1:fdd22bb7aa52 | 260 | pIn2 = pInB + (numColsB - col); |
emilmont | 1:fdd22bb7aa52 | 261 | |
emilmont | 1:fdd22bb7aa52 | 262 | } while(col > 0u); |
emilmont | 1:fdd22bb7aa52 | 263 | |
emilmont | 1:fdd22bb7aa52 | 264 | #endif /* #ifndef ARM_MATH_CM0 */ |
emilmont | 1:fdd22bb7aa52 | 265 | |
emilmont | 1:fdd22bb7aa52 | 266 | /* Update the pointer pInA to point to the starting address of the next row */ |
emilmont | 1:fdd22bb7aa52 | 267 | i = i + numColsB; |
emilmont | 1:fdd22bb7aa52 | 268 | pInA = pInA + numColsA; |
emilmont | 1:fdd22bb7aa52 | 269 | |
emilmont | 1:fdd22bb7aa52 | 270 | /* Decrement the row loop counter */ |
emilmont | 1:fdd22bb7aa52 | 271 | row--; |
emilmont | 1:fdd22bb7aa52 | 272 | |
emilmont | 1:fdd22bb7aa52 | 273 | } while(row > 0u); |
emilmont | 1:fdd22bb7aa52 | 274 | /* Set status as ARM_MATH_SUCCESS */ |
emilmont | 1:fdd22bb7aa52 | 275 | status = ARM_MATH_SUCCESS; |
emilmont | 1:fdd22bb7aa52 | 276 | } |
emilmont | 1:fdd22bb7aa52 | 277 | |
emilmont | 1:fdd22bb7aa52 | 278 | /* Return to application */ |
emilmont | 1:fdd22bb7aa52 | 279 | return (status); |
emilmont | 1:fdd22bb7aa52 | 280 | } |
emilmont | 1:fdd22bb7aa52 | 281 | |
emilmont | 1:fdd22bb7aa52 | 282 | /** |
emilmont | 1:fdd22bb7aa52 | 283 | * @} end of MatrixMult group |
emilmont | 1:fdd22bb7aa52 | 284 | */ |