Fork of mbed-dsp. CMSIS-DSP library of supporting NEON
Dependents: mbed-os-example-cmsis_dsp_neon
Fork of mbed-dsp by
Information
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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_scale_q15.c@4:9cee975aadce, 2014-06-23 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Jun 23 09:30:09 2014 +0100
- Revision:
- 4:9cee975aadce
- Parent:
- 3:7a284390b0ce
Synchronized with git revision 6e7c7bcec41226f536474daae3c13d49e4c0e865
Full URL: https://github.com/mbedmicro/mbed/commit/6e7c7bcec41226f536474daae3c13d49e4c0e865/
Fix signed unsigned compare in dsp library
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
emilmont | 1:fdd22bb7aa52 | 1 | /* ---------------------------------------------------------------------- |
mbed_official | 3:7a284390b0ce | 2 | * Copyright (C) 2010-2013 ARM Limited. All rights reserved. |
emilmont | 1:fdd22bb7aa52 | 3 | * |
mbed_official | 3:7a284390b0ce | 4 | * $Date: 17. January 2013 |
mbed_official | 3:7a284390b0ce | 5 | * $Revision: V1.4.1 |
emilmont | 1:fdd22bb7aa52 | 6 | * |
emilmont | 2:da51fb522205 | 7 | * Project: CMSIS DSP Library |
emilmont | 2:da51fb522205 | 8 | * Title: arm_mat_scale_q15.c |
emilmont | 1:fdd22bb7aa52 | 9 | * |
emilmont | 2:da51fb522205 | 10 | * Description: Multiplies a Q15 matrix by a scalar. |
emilmont | 1:fdd22bb7aa52 | 11 | * |
emilmont | 1:fdd22bb7aa52 | 12 | * Target Processor: Cortex-M4/Cortex-M3/Cortex-M0 |
emilmont | 1:fdd22bb7aa52 | 13 | * |
mbed_official | 3:7a284390b0ce | 14 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 3:7a284390b0ce | 15 | * modification, are permitted provided that the following conditions |
mbed_official | 3:7a284390b0ce | 16 | * are met: |
mbed_official | 3:7a284390b0ce | 17 | * - Redistributions of source code must retain the above copyright |
mbed_official | 3:7a284390b0ce | 18 | * notice, this list of conditions and the following disclaimer. |
mbed_official | 3:7a284390b0ce | 19 | * - Redistributions in binary form must reproduce the above copyright |
mbed_official | 3:7a284390b0ce | 20 | * notice, this list of conditions and the following disclaimer in |
mbed_official | 3:7a284390b0ce | 21 | * the documentation and/or other materials provided with the |
mbed_official | 3:7a284390b0ce | 22 | * distribution. |
mbed_official | 3:7a284390b0ce | 23 | * - Neither the name of ARM LIMITED nor the names of its contributors |
mbed_official | 3:7a284390b0ce | 24 | * may be used to endorse or promote products derived from this |
mbed_official | 3:7a284390b0ce | 25 | * software without specific prior written permission. |
mbed_official | 3:7a284390b0ce | 26 | * |
mbed_official | 3:7a284390b0ce | 27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
mbed_official | 3:7a284390b0ce | 28 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
mbed_official | 3:7a284390b0ce | 29 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
mbed_official | 3:7a284390b0ce | 30 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
mbed_official | 3:7a284390b0ce | 31 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
mbed_official | 3:7a284390b0ce | 32 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
mbed_official | 3:7a284390b0ce | 33 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
mbed_official | 3:7a284390b0ce | 34 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 3:7a284390b0ce | 35 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
mbed_official | 3:7a284390b0ce | 36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
mbed_official | 3:7a284390b0ce | 37 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
mbed_official | 3:7a284390b0ce | 38 | * POSSIBILITY OF SUCH DAMAGE. |
emilmont | 1:fdd22bb7aa52 | 39 | * -------------------------------------------------------------------- */ |
emilmont | 1:fdd22bb7aa52 | 40 | |
emilmont | 1:fdd22bb7aa52 | 41 | #include "arm_math.h" |
emilmont | 1:fdd22bb7aa52 | 42 | |
emilmont | 1:fdd22bb7aa52 | 43 | /** |
emilmont | 1:fdd22bb7aa52 | 44 | * @ingroup groupMatrix |
emilmont | 1:fdd22bb7aa52 | 45 | */ |
emilmont | 1:fdd22bb7aa52 | 46 | |
emilmont | 1:fdd22bb7aa52 | 47 | /** |
emilmont | 1:fdd22bb7aa52 | 48 | * @addtogroup MatrixScale |
emilmont | 1:fdd22bb7aa52 | 49 | * @{ |
emilmont | 1:fdd22bb7aa52 | 50 | */ |
emilmont | 1:fdd22bb7aa52 | 51 | |
emilmont | 1:fdd22bb7aa52 | 52 | /** |
emilmont | 1:fdd22bb7aa52 | 53 | * @brief Q15 matrix scaling. |
emilmont | 1:fdd22bb7aa52 | 54 | * @param[in] *pSrc points to input matrix |
emilmont | 1:fdd22bb7aa52 | 55 | * @param[in] scaleFract fractional portion of the scale factor |
emilmont | 1:fdd22bb7aa52 | 56 | * @param[in] shift number of bits to shift the result by |
emilmont | 1:fdd22bb7aa52 | 57 | * @param[out] *pDst points to output matrix structure |
emilmont | 2:da51fb522205 | 58 | * @return The function returns either |
emilmont | 1:fdd22bb7aa52 | 59 | * <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking. |
emilmont | 1:fdd22bb7aa52 | 60 | * |
emilmont | 1:fdd22bb7aa52 | 61 | * @details |
emilmont | 1:fdd22bb7aa52 | 62 | * <b>Scaling and Overflow Behavior:</b> |
emilmont | 1:fdd22bb7aa52 | 63 | * \par |
emilmont | 1:fdd22bb7aa52 | 64 | * The input data <code>*pSrc</code> and <code>scaleFract</code> are in 1.15 format. |
emilmont | 1:fdd22bb7aa52 | 65 | * These are multiplied to yield a 2.30 intermediate result and this is shifted with saturation to 1.15 format. |
emilmont | 1:fdd22bb7aa52 | 66 | */ |
emilmont | 1:fdd22bb7aa52 | 67 | |
emilmont | 1:fdd22bb7aa52 | 68 | arm_status arm_mat_scale_q15( |
emilmont | 1:fdd22bb7aa52 | 69 | const arm_matrix_instance_q15 * pSrc, |
emilmont | 1:fdd22bb7aa52 | 70 | q15_t scaleFract, |
emilmont | 1:fdd22bb7aa52 | 71 | int32_t shift, |
emilmont | 1:fdd22bb7aa52 | 72 | arm_matrix_instance_q15 * pDst) |
emilmont | 1:fdd22bb7aa52 | 73 | { |
emilmont | 1:fdd22bb7aa52 | 74 | q15_t *pIn = pSrc->pData; /* input data matrix pointer */ |
emilmont | 1:fdd22bb7aa52 | 75 | q15_t *pOut = pDst->pData; /* output data matrix pointer */ |
emilmont | 1:fdd22bb7aa52 | 76 | uint32_t numSamples; /* total number of elements in the matrix */ |
emilmont | 1:fdd22bb7aa52 | 77 | int32_t totShift = 15 - shift; /* total shift to apply after scaling */ |
emilmont | 1:fdd22bb7aa52 | 78 | uint32_t blkCnt; /* loop counters */ |
emilmont | 1:fdd22bb7aa52 | 79 | arm_status status; /* status of matrix scaling */ |
emilmont | 1:fdd22bb7aa52 | 80 | |
mbed_official | 3:7a284390b0ce | 81 | #ifndef ARM_MATH_CM0_FAMILY |
emilmont | 1:fdd22bb7aa52 | 82 | |
emilmont | 1:fdd22bb7aa52 | 83 | q15_t in1, in2, in3, in4; |
emilmont | 1:fdd22bb7aa52 | 84 | q31_t out1, out2, out3, out4; |
emilmont | 1:fdd22bb7aa52 | 85 | q31_t inA1, inA2; |
emilmont | 1:fdd22bb7aa52 | 86 | |
mbed_official | 3:7a284390b0ce | 87 | #endif // #ifndef ARM_MATH_CM0_FAMILY |
emilmont | 1:fdd22bb7aa52 | 88 | |
emilmont | 1:fdd22bb7aa52 | 89 | #ifdef ARM_MATH_MATRIX_CHECK |
emilmont | 1:fdd22bb7aa52 | 90 | /* Check for matrix mismatch */ |
emilmont | 1:fdd22bb7aa52 | 91 | if((pSrc->numRows != pDst->numRows) || (pSrc->numCols != pDst->numCols)) |
emilmont | 1:fdd22bb7aa52 | 92 | { |
emilmont | 1:fdd22bb7aa52 | 93 | /* Set status as ARM_MATH_SIZE_MISMATCH */ |
emilmont | 1:fdd22bb7aa52 | 94 | status = ARM_MATH_SIZE_MISMATCH; |
emilmont | 1:fdd22bb7aa52 | 95 | } |
emilmont | 1:fdd22bb7aa52 | 96 | else |
emilmont | 1:fdd22bb7aa52 | 97 | #endif // #ifdef ARM_MATH_MATRIX_CHECK |
emilmont | 1:fdd22bb7aa52 | 98 | { |
emilmont | 1:fdd22bb7aa52 | 99 | /* Total number of samples in the input matrix */ |
emilmont | 1:fdd22bb7aa52 | 100 | numSamples = (uint32_t) pSrc->numRows * pSrc->numCols; |
emilmont | 1:fdd22bb7aa52 | 101 | |
mbed_official | 3:7a284390b0ce | 102 | #ifndef ARM_MATH_CM0_FAMILY |
emilmont | 1:fdd22bb7aa52 | 103 | |
emilmont | 1:fdd22bb7aa52 | 104 | /* Run the below code for Cortex-M4 and Cortex-M3 */ |
emilmont | 1:fdd22bb7aa52 | 105 | /* Loop Unrolling */ |
emilmont | 1:fdd22bb7aa52 | 106 | blkCnt = numSamples >> 2; |
emilmont | 1:fdd22bb7aa52 | 107 | |
emilmont | 1:fdd22bb7aa52 | 108 | /* First part of the processing with loop unrolling. Compute 4 outputs at a time. |
emilmont | 1:fdd22bb7aa52 | 109 | ** a second loop below computes the remaining 1 to 3 samples. */ |
emilmont | 1:fdd22bb7aa52 | 110 | while(blkCnt > 0u) |
emilmont | 1:fdd22bb7aa52 | 111 | { |
emilmont | 1:fdd22bb7aa52 | 112 | /* C(m,n) = A(m,n) * k */ |
emilmont | 1:fdd22bb7aa52 | 113 | /* Scale, saturate and then store the results in the destination buffer. */ |
emilmont | 1:fdd22bb7aa52 | 114 | /* Reading 2 inputs from memory */ |
emilmont | 1:fdd22bb7aa52 | 115 | inA1 = _SIMD32_OFFSET(pIn); |
emilmont | 1:fdd22bb7aa52 | 116 | inA2 = _SIMD32_OFFSET(pIn + 2); |
emilmont | 1:fdd22bb7aa52 | 117 | |
emilmont | 1:fdd22bb7aa52 | 118 | /* C = A * scale */ |
emilmont | 1:fdd22bb7aa52 | 119 | /* Scale the inputs and then store the 2 results in the destination buffer |
emilmont | 1:fdd22bb7aa52 | 120 | * in single cycle by packing the outputs */ |
emilmont | 1:fdd22bb7aa52 | 121 | out1 = (q31_t) ((q15_t) (inA1 >> 16) * scaleFract); |
emilmont | 1:fdd22bb7aa52 | 122 | out2 = (q31_t) ((q15_t) inA1 * scaleFract); |
emilmont | 1:fdd22bb7aa52 | 123 | out3 = (q31_t) ((q15_t) (inA2 >> 16) * scaleFract); |
emilmont | 1:fdd22bb7aa52 | 124 | out4 = (q31_t) ((q15_t) inA2 * scaleFract); |
emilmont | 1:fdd22bb7aa52 | 125 | |
emilmont | 1:fdd22bb7aa52 | 126 | out1 = out1 >> totShift; |
emilmont | 1:fdd22bb7aa52 | 127 | inA1 = _SIMD32_OFFSET(pIn + 4); |
emilmont | 1:fdd22bb7aa52 | 128 | out2 = out2 >> totShift; |
emilmont | 1:fdd22bb7aa52 | 129 | inA2 = _SIMD32_OFFSET(pIn + 6); |
emilmont | 1:fdd22bb7aa52 | 130 | out3 = out3 >> totShift; |
emilmont | 1:fdd22bb7aa52 | 131 | out4 = out4 >> totShift; |
emilmont | 1:fdd22bb7aa52 | 132 | |
emilmont | 1:fdd22bb7aa52 | 133 | in1 = (q15_t) (__SSAT(out1, 16)); |
emilmont | 1:fdd22bb7aa52 | 134 | in2 = (q15_t) (__SSAT(out2, 16)); |
emilmont | 1:fdd22bb7aa52 | 135 | in3 = (q15_t) (__SSAT(out3, 16)); |
emilmont | 1:fdd22bb7aa52 | 136 | in4 = (q15_t) (__SSAT(out4, 16)); |
emilmont | 1:fdd22bb7aa52 | 137 | |
emilmont | 1:fdd22bb7aa52 | 138 | _SIMD32_OFFSET(pOut) = __PKHBT(in2, in1, 16); |
emilmont | 1:fdd22bb7aa52 | 139 | _SIMD32_OFFSET(pOut + 2) = __PKHBT(in4, in3, 16); |
emilmont | 1:fdd22bb7aa52 | 140 | |
emilmont | 1:fdd22bb7aa52 | 141 | /* update pointers to process next sampels */ |
emilmont | 1:fdd22bb7aa52 | 142 | pIn += 4u; |
emilmont | 1:fdd22bb7aa52 | 143 | pOut += 4u; |
emilmont | 1:fdd22bb7aa52 | 144 | |
emilmont | 1:fdd22bb7aa52 | 145 | |
emilmont | 1:fdd22bb7aa52 | 146 | /* Decrement the numSamples loop counter */ |
emilmont | 1:fdd22bb7aa52 | 147 | blkCnt--; |
emilmont | 1:fdd22bb7aa52 | 148 | } |
emilmont | 1:fdd22bb7aa52 | 149 | |
emilmont | 1:fdd22bb7aa52 | 150 | /* If the numSamples is not a multiple of 4, compute any remaining output samples here. |
emilmont | 1:fdd22bb7aa52 | 151 | ** No loop unrolling is used. */ |
emilmont | 1:fdd22bb7aa52 | 152 | blkCnt = numSamples % 0x4u; |
emilmont | 1:fdd22bb7aa52 | 153 | |
emilmont | 1:fdd22bb7aa52 | 154 | #else |
emilmont | 1:fdd22bb7aa52 | 155 | |
emilmont | 1:fdd22bb7aa52 | 156 | /* Run the below code for Cortex-M0 */ |
emilmont | 1:fdd22bb7aa52 | 157 | |
emilmont | 1:fdd22bb7aa52 | 158 | /* Initialize blkCnt with number of samples */ |
emilmont | 1:fdd22bb7aa52 | 159 | blkCnt = numSamples; |
emilmont | 1:fdd22bb7aa52 | 160 | |
mbed_official | 3:7a284390b0ce | 161 | #endif /* #ifndef ARM_MATH_CM0_FAMILY */ |
emilmont | 1:fdd22bb7aa52 | 162 | |
emilmont | 1:fdd22bb7aa52 | 163 | while(blkCnt > 0u) |
emilmont | 1:fdd22bb7aa52 | 164 | { |
emilmont | 1:fdd22bb7aa52 | 165 | /* C(m,n) = A(m,n) * k */ |
emilmont | 1:fdd22bb7aa52 | 166 | /* Scale, saturate and then store the results in the destination buffer. */ |
emilmont | 1:fdd22bb7aa52 | 167 | *pOut++ = |
emilmont | 1:fdd22bb7aa52 | 168 | (q15_t) (__SSAT(((q31_t) (*pIn++) * scaleFract) >> totShift, 16)); |
emilmont | 1:fdd22bb7aa52 | 169 | |
emilmont | 1:fdd22bb7aa52 | 170 | /* Decrement the numSamples loop counter */ |
emilmont | 1:fdd22bb7aa52 | 171 | blkCnt--; |
emilmont | 1:fdd22bb7aa52 | 172 | } |
emilmont | 1:fdd22bb7aa52 | 173 | /* Set status as ARM_MATH_SUCCESS */ |
emilmont | 1:fdd22bb7aa52 | 174 | status = ARM_MATH_SUCCESS; |
emilmont | 1:fdd22bb7aa52 | 175 | } |
emilmont | 1:fdd22bb7aa52 | 176 | |
emilmont | 1:fdd22bb7aa52 | 177 | /* Return to application */ |
emilmont | 1:fdd22bb7aa52 | 178 | return (status); |
emilmont | 1:fdd22bb7aa52 | 179 | } |
emilmont | 1:fdd22bb7aa52 | 180 | |
emilmont | 1:fdd22bb7aa52 | 181 | /** |
emilmont | 1:fdd22bb7aa52 | 182 | * @} end of MatrixScale group |
emilmont | 1:fdd22bb7aa52 | 183 | */ |