Renesas / mbed-dsp-neon

Fork of mbed-dsp. CMSIS-DSP library of supporting NEON

Dependents:   mbed-os-example-cmsis_dsp_neon

Fork of mbed-dsp by mbed official

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。


Diff: cmsis_dsp/ControllerFunctions/arm_sin_cos_f32.c

Revision:
5:a912b042151f
Parent:
4:9cee975aadce
--- a/cmsis_dsp/ControllerFunctions/arm_sin_cos_f32.c	Mon Jun 23 09:30:09 2014 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,436 +0,0 @@
-/* ----------------------------------------------------------------------    
-* Copyright (C) 2010-2013 ARM Limited. All rights reserved.    
-*    
-* $Date:        17. January 2013
-* $Revision: 	V1.4.1
-*    
-* Project: 	    CMSIS DSP Library    
-* Title:		arm_sin_cos_f32.c    
-*    
-* Description:	Sine and Cosine calculation for floating-point values.   
-*    
-* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
-*  
-* Redistribution and use in source and binary forms, with or without 
-* modification, are permitted provided that the following conditions
-* are met:
-*   - Redistributions of source code must retain the above copyright
-*     notice, this list of conditions and the following disclaimer.
-*   - Redistributions in binary form must reproduce the above copyright
-*     notice, this list of conditions and the following disclaimer in
-*     the documentation and/or other materials provided with the 
-*     distribution.
-*   - Neither the name of ARM LIMITED nor the names of its contributors
-*     may be used to endorse or promote products derived from this
-*     software without specific prior written permission.
-*
-* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 
-* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-* POSSIBILITY OF SUCH DAMAGE.   
-* -------------------------------------------------------------------- */
-
-#include "arm_math.h"
-
-/**    
- * @ingroup groupController    
- */
-
-/**    
- * @defgroup SinCos Sine Cosine   
- *    
- * Computes the trigonometric sine and cosine values using a combination of table lookup   
- * and linear interpolation.     
- * There are separate functions for Q31 and floating-point data types.   
- * The input to the floating-point version is in degrees while the   
- * fixed-point Q31 have a scaled input with the range   
- * [-1 0.9999] mapping to [-180 179] degrees.   
- *   
- * The implementation is based on table lookup using 360 values together with linear interpolation.   
- * The steps used are:   
- *  -# Calculation of the nearest integer table index.   
- *  -# Compute the fractional portion (fract) of the input.   
- *  -# Fetch the value corresponding to \c index from sine table to \c y0 and also value from \c index+1 to \c y1.      
- *  -# Sine value is computed as <code> *psinVal = y0 + (fract * (y1 - y0))</code>.    
- *  -# Fetch the value corresponding to \c index from cosine table to \c y0 and also value from \c index+1 to \c y1.      
- *  -# Cosine value is computed as <code> *pcosVal = y0 + (fract * (y1 - y0))</code>.    
- */
-
- /**    
- * @addtogroup SinCos    
- * @{    
- */
-
-
-/**    
-* \par    
-* Cosine Table is generated from following loop    
-* <pre>for(i = 0; i < 360; i++)    
-* {    
-*    cosTable[i]= cos((i-180) * PI/180.0);    
-* } </pre>   
-*/
-
-static const float32_t cosTable[360] = {
-  -0.999847695156391270f, -0.999390827019095760f, -0.998629534754573830f,
-  -0.997564050259824200f, -0.996194698091745550f, -0.994521895368273290f,
-  -0.992546151641321980f, -0.990268068741570250f,
-  -0.987688340595137660f, -0.984807753012208020f, -0.981627183447663980f,
-  -0.978147600733805690f, -0.974370064785235250f, -0.970295726275996470f,
-  -0.965925826289068200f, -0.961261695938318670f,
-  -0.956304755963035440f, -0.951056516295153530f, -0.945518575599316740f,
-  -0.939692620785908320f, -0.933580426497201740f, -0.927183854566787310f,
-  -0.920504853452440150f, -0.913545457642600760f,
-  -0.906307787036649940f, -0.898794046299167040f, -0.891006524188367790f,
-  -0.882947592858926770f, -0.874619707139395740f, -0.866025403784438710f,
-  -0.857167300702112220f, -0.848048096156425960f,
-  -0.838670567945424160f, -0.829037572555041620f, -0.819152044288991580f,
-  -0.809016994374947340f, -0.798635510047292940f, -0.788010753606721900f,
-  -0.777145961456970680f, -0.766044443118977900f,
-  -0.754709580222772010f, -0.743144825477394130f, -0.731353701619170460f,
-  -0.719339800338651300f, -0.707106781186547460f, -0.694658370458997030f,
-  -0.681998360062498370f, -0.669130606358858240f,
-  -0.656059028990507500f, -0.642787609686539360f, -0.629320391049837280f,
-  -0.615661475325658290f, -0.601815023152048380f, -0.587785252292473030f,
-  -0.573576436351045830f, -0.559192903470746680f,
-  -0.544639035015027080f, -0.529919264233204790f, -0.515038074910054270f,
-  -0.499999999999999780f, -0.484809620246337000f, -0.469471562785890530f,
-  -0.453990499739546750f, -0.438371146789077510f,
-  -0.422618261740699330f, -0.406736643075800100f, -0.390731128489273600f,
-  -0.374606593415912070f, -0.358367949545300270f, -0.342020143325668710f,
-  -0.325568154457156420f, -0.309016994374947340f,
-  -0.292371704722736660f, -0.275637355816999050f, -0.258819045102520850f,
-  -0.241921895599667790f, -0.224951054343864810f, -0.207911690817759120f,
-  -0.190808995376544800f, -0.173648177666930300f,
-  -0.156434465040231040f, -0.139173100960065350f, -0.121869343405147370f,
-  -0.104528463267653330f, -0.087155742747658235f, -0.069756473744125330f,
-  -0.052335956242943620f, -0.034899496702500733f,
-  -0.017452406437283477f, 0.000000000000000061f, 0.017452406437283376f,
-  0.034899496702501080f, 0.052335956242943966f, 0.069756473744125455f,
-  0.087155742747658138f, 0.104528463267653460f,
-  0.121869343405147490f, 0.139173100960065690f, 0.156434465040230920f,
-  0.173648177666930410f, 0.190808995376544920f, 0.207911690817759450f,
-  0.224951054343864920f, 0.241921895599667900f,
-  0.258819045102520740f, 0.275637355816999160f, 0.292371704722736770f,
-  0.309016994374947450f, 0.325568154457156760f, 0.342020143325668820f,
-  0.358367949545300380f, 0.374606593415911960f,
-  0.390731128489273940f, 0.406736643075800210f, 0.422618261740699440f,
-  0.438371146789077460f, 0.453990499739546860f, 0.469471562785890860f,
-  0.484809620246337110f, 0.500000000000000110f,
-  0.515038074910054380f, 0.529919264233204900f, 0.544639035015027200f,
-  0.559192903470746790f, 0.573576436351046050f, 0.587785252292473140f,
-  0.601815023152048270f, 0.615661475325658290f,
-  0.629320391049837500f, 0.642787609686539360f, 0.656059028990507280f,
-  0.669130606358858240f, 0.681998360062498480f, 0.694658370458997370f,
-  0.707106781186547570f, 0.719339800338651190f,
-  0.731353701619170570f, 0.743144825477394240f, 0.754709580222772010f,
-  0.766044443118978010f, 0.777145961456970900f, 0.788010753606722010f,
-  0.798635510047292830f, 0.809016994374947450f,
-  0.819152044288991800f, 0.829037572555041620f, 0.838670567945424050f,
-  0.848048096156425960f, 0.857167300702112330f, 0.866025403784438710f,
-  0.874619707139395740f, 0.882947592858926990f,
-  0.891006524188367900f, 0.898794046299167040f, 0.906307787036649940f,
-  0.913545457642600870f, 0.920504853452440370f, 0.927183854566787420f,
-  0.933580426497201740f, 0.939692620785908430f,
-  0.945518575599316850f, 0.951056516295153530f, 0.956304755963035440f,
-  0.961261695938318890f, 0.965925826289068310f, 0.970295726275996470f,
-  0.974370064785235250f, 0.978147600733805690f,
-  0.981627183447663980f, 0.984807753012208020f, 0.987688340595137770f,
-  0.990268068741570360f, 0.992546151641321980f, 0.994521895368273290f,
-  0.996194698091745550f, 0.997564050259824200f,
-  0.998629534754573830f, 0.999390827019095760f, 0.999847695156391270f,
-  1.000000000000000000f, 0.999847695156391270f, 0.999390827019095760f,
-  0.998629534754573830f, 0.997564050259824200f,
-  0.996194698091745550f, 0.994521895368273290f, 0.992546151641321980f,
-  0.990268068741570360f, 0.987688340595137770f, 0.984807753012208020f,
-  0.981627183447663980f, 0.978147600733805690f,
-  0.974370064785235250f, 0.970295726275996470f, 0.965925826289068310f,
-  0.961261695938318890f, 0.956304755963035440f, 0.951056516295153530f,
-  0.945518575599316850f, 0.939692620785908430f,
-  0.933580426497201740f, 0.927183854566787420f, 0.920504853452440370f,
-  0.913545457642600870f, 0.906307787036649940f, 0.898794046299167040f,
-  0.891006524188367900f, 0.882947592858926990f,
-  0.874619707139395740f, 0.866025403784438710f, 0.857167300702112330f,
-  0.848048096156425960f, 0.838670567945424050f, 0.829037572555041620f,
-  0.819152044288991800f, 0.809016994374947450f,
-  0.798635510047292830f, 0.788010753606722010f, 0.777145961456970900f,
-  0.766044443118978010f, 0.754709580222772010f, 0.743144825477394240f,
-  0.731353701619170570f, 0.719339800338651190f,
-  0.707106781186547570f, 0.694658370458997370f, 0.681998360062498480f,
-  0.669130606358858240f, 0.656059028990507280f, 0.642787609686539360f,
-  0.629320391049837500f, 0.615661475325658290f,
-  0.601815023152048270f, 0.587785252292473140f, 0.573576436351046050f,
-  0.559192903470746790f, 0.544639035015027200f, 0.529919264233204900f,
-  0.515038074910054380f, 0.500000000000000110f,
-  0.484809620246337110f, 0.469471562785890860f, 0.453990499739546860f,
-  0.438371146789077460f, 0.422618261740699440f, 0.406736643075800210f,
-  0.390731128489273940f, 0.374606593415911960f,
-  0.358367949545300380f, 0.342020143325668820f, 0.325568154457156760f,
-  0.309016994374947450f, 0.292371704722736770f, 0.275637355816999160f,
-  0.258819045102520740f, 0.241921895599667900f,
-  0.224951054343864920f, 0.207911690817759450f, 0.190808995376544920f,
-  0.173648177666930410f, 0.156434465040230920f, 0.139173100960065690f,
-  0.121869343405147490f, 0.104528463267653460f,
-  0.087155742747658138f, 0.069756473744125455f, 0.052335956242943966f,
-  0.034899496702501080f, 0.017452406437283376f, 0.000000000000000061f,
-  -0.017452406437283477f, -0.034899496702500733f,
-  -0.052335956242943620f, -0.069756473744125330f, -0.087155742747658235f,
-  -0.104528463267653330f, -0.121869343405147370f, -0.139173100960065350f,
-  -0.156434465040231040f, -0.173648177666930300f,
-  -0.190808995376544800f, -0.207911690817759120f, -0.224951054343864810f,
-  -0.241921895599667790f, -0.258819045102520850f, -0.275637355816999050f,
-  -0.292371704722736660f, -0.309016994374947340f,
-  -0.325568154457156420f, -0.342020143325668710f, -0.358367949545300270f,
-  -0.374606593415912070f, -0.390731128489273600f, -0.406736643075800100f,
-  -0.422618261740699330f, -0.438371146789077510f,
-  -0.453990499739546750f, -0.469471562785890530f, -0.484809620246337000f,
-  -0.499999999999999780f, -0.515038074910054270f, -0.529919264233204790f,
-  -0.544639035015027080f, -0.559192903470746680f,
-  -0.573576436351045830f, -0.587785252292473030f, -0.601815023152048380f,
-  -0.615661475325658290f, -0.629320391049837280f, -0.642787609686539360f,
-  -0.656059028990507500f, -0.669130606358858240f,
-  -0.681998360062498370f, -0.694658370458997030f, -0.707106781186547460f,
-  -0.719339800338651300f, -0.731353701619170460f, -0.743144825477394130f,
-  -0.754709580222772010f, -0.766044443118977900f,
-  -0.777145961456970680f, -0.788010753606721900f, -0.798635510047292940f,
-  -0.809016994374947340f, -0.819152044288991580f, -0.829037572555041620f,
-  -0.838670567945424160f, -0.848048096156425960f,
-  -0.857167300702112220f, -0.866025403784438710f, -0.874619707139395740f,
-  -0.882947592858926770f, -0.891006524188367790f, -0.898794046299167040f,
-  -0.906307787036649940f, -0.913545457642600760f,
-  -0.920504853452440150f, -0.927183854566787310f, -0.933580426497201740f,
-  -0.939692620785908320f, -0.945518575599316740f, -0.951056516295153530f,
-  -0.956304755963035440f, -0.961261695938318670f,
-  -0.965925826289068200f, -0.970295726275996470f, -0.974370064785235250f,
-  -0.978147600733805690f, -0.981627183447663980f, -0.984807753012208020f,
-  -0.987688340595137660f, -0.990268068741570250f,
-  -0.992546151641321980f, -0.994521895368273290f, -0.996194698091745550f,
-  -0.997564050259824200f, -0.998629534754573830f, -0.999390827019095760f,
-  -0.999847695156391270f, -1.000000000000000000f
-};
-
-/**    
-* \par    
-* Sine Table is generated from following loop    
-* <pre>for(i = 0; i < 360; i++)    
-* {    
-*    sinTable[i]= sin((i-180) * PI/180.0);    
-* } </pre>    
-*/
-
-
-static const float32_t sinTable[360] = {
-  -0.017452406437283439f, -0.034899496702500699f, -0.052335956242943807f,
-  -0.069756473744125524f, -0.087155742747658638f, -0.104528463267653730f,
-  -0.121869343405147550f, -0.139173100960065740f,
-  -0.156434465040230980f, -0.173648177666930280f, -0.190808995376544970f,
-  -0.207911690817759310f, -0.224951054343864780f, -0.241921895599667730f,
-  -0.258819045102521020f, -0.275637355816999660f,
-  -0.292371704722737050f, -0.309016994374947510f, -0.325568154457156980f,
-  -0.342020143325668880f, -0.358367949545300210f, -0.374606593415912240f,
-  -0.390731128489274160f, -0.406736643075800430f,
-  -0.422618261740699500f, -0.438371146789077290f, -0.453990499739546860f,
-  -0.469471562785891080f, -0.484809620246337170f, -0.499999999999999940f,
-  -0.515038074910054380f, -0.529919264233204900f,
-  -0.544639035015026860f, -0.559192903470746900f, -0.573576436351046380f,
-  -0.587785252292473250f, -0.601815023152048160f, -0.615661475325658400f,
-  -0.629320391049837720f, -0.642787609686539470f,
-  -0.656059028990507280f, -0.669130606358858350f, -0.681998360062498590f,
-  -0.694658370458997140f, -0.707106781186547570f, -0.719339800338651410f,
-  -0.731353701619170570f, -0.743144825477394240f,
-  -0.754709580222771790f, -0.766044443118978010f, -0.777145961456971010f,
-  -0.788010753606722010f, -0.798635510047292720f, -0.809016994374947450f,
-  -0.819152044288992020f, -0.829037572555041740f,
-  -0.838670567945424050f, -0.848048096156426070f, -0.857167300702112330f,
-  -0.866025403784438710f, -0.874619707139395850f, -0.882947592858927100f,
-  -0.891006524188367900f, -0.898794046299166930f,
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-  -0.927183854566787420f, -0.933580426497201740f, -0.939692620785908430f,
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-};
-
-
-/**    
- * @brief  Floating-point sin_cos function.   
- * @param[in]  theta    input value in degrees    
- * @param[out] *pSinVal points to the processed sine output.    
- * @param[out] *pCosVal points to the processed cos output.    
- * @return none.   
- */
-
-
-void arm_sin_cos_f32(
-  float32_t theta,
-  float32_t * pSinVal,
-  float32_t * pCosVal)
-{
-  int32_t i;                                     /* Index for reading nearwst output values */
-  float32_t x1 = -179.0f;                        /* Initial input value */
-  float32_t y0, y1;                              /* nearest output values */
-  float32_t y2, y3;
-  float32_t fract;                               /* fractional part of input */
-
-  /* Calculation of fractional part */
-  if(theta > 0.0f)
-  {
-    fract = theta - (float32_t) ((int32_t) theta);
-  }
-  else
-  {
-    fract = (theta - (float32_t) ((int32_t) theta)) + 1.0f;
-  }
-
-  /* index calculation for reading nearest output values */
-  i = (uint32_t) (theta - x1);
-
-  /* Checking min and max index of table */
-  if(i < 0)
-  {
-    i = 0;
-  }
-  else if(i >= 359)
-  {
-    i = 358;
-  }
-
-  /* reading nearest sine output values */
-  y0 = sinTable[i];
-  y1 = sinTable[i + 1u];
-
-  /* reading nearest cosine output values */
-  y2 = cosTable[i];
-  y3 = cosTable[i + 1u];
-
-  y1 = y1 - y0;
-  y3 = y3 - y2;
-
-  y1 = fract * y1;
-  y3 = fract * y3;
-
-  /* Calculation of sine value */
-  *pSinVal = y0 + y1;
-
-  /* Calculation of cosine value */
-  *pCosVal = y2 + y3;
-
-}
-
-/**    
- * @} end of SinCos group    
- */