k60-keil

K60-Keil版本（下载安装MDK4.23）

/* ----------------------------------------------------------------------   
* Copyright (C) 2010 ARM Limited. All rights reserved.   
*   
* $Date:        15. July 2011  
* $Revision: 	V1.0.10  
*   
* Project: 	    CMSIS DSP Library   
* Title:	    arm_dct4_init_f32.c   
*   
* Description:	Initialization function of DCT-4 & IDCT4 F32   
*   
* 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.   
* -------------------------------------------------------------------- */


#include "arm_math.h"

/**   
 * @ingroup groupTransforms   
 */

/**   
 * @addtogroup DCT4_IDCT4   
 * @{   
 */

/*   
* @brief  Weights Table   
*/

/**   
* \par   
* Weights tables are generated using the formula : <pre>weights[n] = e^(-j*n*pi/(2*N))</pre>   
* \par   
* C command to generate the table   
* <pre>   
* for(i = 0; i< N; i++)   
* {   
*    weights[2*i]= cos(i*c);   
*    weights[(2*i)+1]= -sin(i * c);   
* } </pre>   
* \par   
* Where <code>N</code> is the Number of weights to be calculated and <code>c</code> is <code>pi/(2*N)</code>   
* \par   
* In the tables below the real and imaginary values are placed alternatively, hence the   
* array length is <code>2*N</code>.   
*/

static const float32_t Weights_128[256] = {
  1.000000000000000000f, 0.000000000000000000f, 0.999924701839144500f,
  -0.012271538285719925f,
  0.999698818696204250f, -0.024541228522912288f, 0.999322384588349540f,
  -0.036807222941358832f,
  0.998795456205172410f, -0.049067674327418015f, 0.998118112900149180f,
  -0.061320736302208578f,
  0.997290456678690210f, -0.073564563599667426f, 0.996312612182778000f,
  -0.085797312344439894f,
  0.995184726672196930f, -0.098017140329560604f, 0.993906970002356060f,
  -0.110222207293883060f,
  0.992479534598709970f, -0.122410675199216200f, 0.990902635427780010f,
  -0.134580708507126170f,
  0.989176509964781010f, -0.146730474455361750f, 0.987301418157858430f,
  -0.158858143333861450f,
  0.985277642388941220f, -0.170961888760301220f, 0.983105487431216290f,
  -0.183039887955140950f,
  0.980785280403230430f, -0.195090322016128250f, 0.978317370719627650f,
  -0.207111376192218560f,
  0.975702130038528570f, -0.219101240156869800f, 0.972939952205560180f,
  -0.231058108280671110f,
  0.970031253194543970f, -0.242980179903263870f, 0.966976471044852070f,
  -0.254865659604514570f,
  0.963776065795439840f, -0.266712757474898370f, 0.960430519415565790f,
  -0.278519689385053060f,
  0.956940335732208820f, -0.290284677254462330f, 0.953306040354193860f,
  -0.302005949319228080f,
  0.949528180593036670f, -0.313681740398891520f, 0.945607325380521280f,
  -0.325310292162262930f,
  0.941544065183020810f, -0.336889853392220050f, 0.937339011912574960f,
  -0.348418680249434560f,
  0.932992798834738960f, -0.359895036534988110f, 0.928506080473215590f,
  -0.371317193951837540f,
  0.923879532511286740f, -0.382683432365089780f, 0.919113851690057770f,
  -0.393992040061048100f,
  0.914209755703530690f, -0.405241314004989860f, 0.909167983090522380f,
  -0.416429560097637150f,
  0.903989293123443340f, -0.427555093430282080f, 0.898674465693953820f,
  -0.438616238538527660f,
  0.893224301195515320f, -0.449611329654606540f, 0.887639620402853930f,
  -0.460538710958240010f,
  0.881921264348355050f, -0.471396736825997640f, 0.876070094195406600f,
  -0.482183772079122720f,
  0.870086991108711460f, -0.492898192229784040f, 0.863972856121586810f,
  -0.503538383725717580f,
  0.857728610000272120f, -0.514102744193221660f, 0.851355193105265200f,
  -0.524589682678468950f,
  0.844853565249707120f, -0.534997619887097150f, 0.838224705554838080f,
  -0.545324988422046460f,
  0.831469612302545240f, -0.555570233019602180f, 0.824589302785025290f,
  -0.565731810783613120f,
  0.817584813151583710f, -0.575808191417845340f, 0.810457198252594770f,
  -0.585797857456438860f,
  0.803207531480644940f, -0.595699304492433360f, 0.795836904608883570f,
  -0.605511041404325550f,
  0.788346427626606340f, -0.615231590580626820f, 0.780737228572094490f,
  -0.624859488142386340f,
  0.773010453362736990f, -0.634393284163645490f, 0.765167265622458960f,
  -0.643831542889791390f,
  0.757208846506484570f, -0.653172842953776760f, 0.749136394523459370f,
  -0.662415777590171780f,
  0.740951125354959110f, -0.671558954847018330f, 0.732654271672412820f,
  -0.680600997795453020f,
  0.724247082951467000f, -0.689540544737066830f, 0.715730825283818590f,
  -0.698376249408972920f,
  0.707106781186547570f, -0.707106781186547460f, 0.698376249408972920f,
  -0.715730825283818590f,
  0.689540544737066940f, -0.724247082951466890f, 0.680600997795453130f,
  -0.732654271672412820f,
  0.671558954847018330f, -0.740951125354959110f, 0.662415777590171780f,
  -0.749136394523459260f,
  0.653172842953776760f, -0.757208846506484460f, 0.643831542889791500f,
  -0.765167265622458960f,
  0.634393284163645490f, -0.773010453362736990f, 0.624859488142386450f,
  -0.780737228572094380f,
  0.615231590580626820f, -0.788346427626606230f, 0.605511041404325550f,
  -0.795836904608883460f,
  0.595699304492433470f, -0.803207531480644830f, 0.585797857456438860f,
  -0.810457198252594770f,
  0.575808191417845340f, -0.817584813151583710f, 0.565731810783613230f,
  -0.824589302785025290f,
  0.555570233019602290f, -0.831469612302545240f, 0.545324988422046460f,
  -0.838224705554837970f,
  0.534997619887097260f, -0.844853565249707010f, 0.524589682678468840f,
  -0.851355193105265200f,
  0.514102744193221660f, -0.857728610000272120f, 0.503538383725717580f,
  -0.863972856121586700f,
  0.492898192229784090f, -0.870086991108711350f, 0.482183772079122830f,
  -0.876070094195406600f,
  0.471396736825997810f, -0.881921264348354940f, 0.460538710958240010f,
  -0.887639620402853930f,
  0.449611329654606600f, -0.893224301195515320f, 0.438616238538527710f,
  -0.898674465693953820f,
  0.427555093430282200f, -0.903989293123443340f, 0.416429560097637320f,
  -0.909167983090522270f,
  0.405241314004989860f, -0.914209755703530690f, 0.393992040061048100f,
  -0.919113851690057770f,
  0.382683432365089840f, -0.923879532511286740f, 0.371317193951837600f,
  -0.928506080473215480f,
  0.359895036534988280f, -0.932992798834738850f, 0.348418680249434510f,
  -0.937339011912574960f,
  0.336889853392220050f, -0.941544065183020810f, 0.325310292162262980f,
  -0.945607325380521280f,
  0.313681740398891570f, -0.949528180593036670f, 0.302005949319228200f,
  -0.953306040354193750f,
  0.290284677254462330f, -0.956940335732208940f, 0.278519689385053060f,
  -0.960430519415565790f,
  0.266712757474898420f, -0.963776065795439840f, 0.254865659604514630f,
  -0.966976471044852070f,
  0.242980179903263980f, -0.970031253194543970f, 0.231058108280671280f,
  -0.972939952205560070f,
  0.219101240156869770f, -0.975702130038528570f, 0.207111376192218560f,
  -0.978317370719627650f,
  0.195090322016128330f, -0.980785280403230430f, 0.183039887955141060f,
  -0.983105487431216290f,
  0.170961888760301360f, -0.985277642388941220f, 0.158858143333861390f,
  -0.987301418157858430f,
  0.146730474455361750f, -0.989176509964781010f, 0.134580708507126220f,
  -0.990902635427780010f,
  0.122410675199216280f, -0.992479534598709970f, 0.110222207293883180f,
  -0.993906970002356060f,
  0.098017140329560770f, -0.995184726672196820f, 0.085797312344439880f,
  -0.996312612182778000f,
  0.073564563599667454f, -0.997290456678690210f, 0.061320736302208648f,
  -0.998118112900149180f,
  0.049067674327418126f, -0.998795456205172410f, 0.036807222941358991f,
  -0.999322384588349540f,
  0.024541228522912264f, -0.999698818696204250f, 0.012271538285719944f,
  -0.999924701839144500f
};

static const float32_t Weights_512[1024] = {
  1.000000000000000000f, 0.000000000000000000f, 0.999995293809576190f,
  -0.003067956762965976f,
  0.999981175282601110f, -0.006135884649154475f, 0.999957644551963900f,
  -0.009203754782059819f,
  0.999924701839144500f, -0.012271538285719925f, 0.999882347454212560f,
  -0.015339206284988100f,
  0.999830581795823400f, -0.018406729905804820f, 0.999769405351215280f,
  -0.021474080275469508f,
  0.999698818696204250f, -0.024541228522912288f, 0.999618822495178640f,
  -0.027608145778965740f,
  0.999529417501093140f, -0.030674803176636626f, 0.999430604555461730f,
  -0.033741171851377580f,
  0.999322384588349540f, -0.036807222941358832f, 0.999204758618363890f,
  -0.039872927587739811f,
  0.999077727752645360f, -0.042938256934940820f, 0.998941293186856870f,
  -0.046003182130914623f,
  0.998795456205172410f, -0.049067674327418015f, 0.998640218180265270f,
  -0.052131704680283324f,
  0.998475580573294770f, -0.055195244349689934f, 0.998301544933892890f,
  -0.058258264500435752f,
  0.998118112900149180f, -0.061320736302208578f, 0.997925286198596000f,
  -0.064382630929857465f,
  0.997723066644191640f, -0.067443919563664051f, 0.997511456140303450f,
  -0.070504573389613856f,
  0.997290456678690210f, -0.073564563599667426f, 0.997060070339482960f,
  -0.076623861392031492f,
  0.996820299291165670f, -0.079682437971430126f, 0.996571145790554840f,
  -0.082740264549375692f,
  0.996312612182778000f, -0.085797312344439894f, 0.996044700901251970f,
  -0.088853552582524600f,
  0.995767414467659820f, -0.091908956497132724f, 0.995480755491926940f,
  -0.094963495329638992f,
  0.995184726672196930f, -0.098017140329560604f, 0.994879330794805620f,
  -0.101069862754827820f,
  0.994564570734255420f, -0.104121633872054590f, 0.994240449453187900f,
  -0.107172424956808840f,
  0.993906970002356060f, -0.110222207293883060f, 0.993564135520595300f,
  -0.113270952177564350f,
  0.993211949234794500f, -0.116318630911904750f, 0.992850414459865100f,
  -0.119365214810991350f,
  0.992479534598709970f, -0.122410675199216200f, 0.992099313142191800f,
  -0.125454983411546230f,
  0.991709753669099530f, -0.128498110793793170f, 0.991310859846115440f,
  -0.131540028702883120f,
  0.990902635427780010f, -0.134580708507126170f, 0.990485084256457090f,
  -0.137620121586486040f,
  0.990058210262297120f, -0.140658239332849210f, 0.989622017463200890f,
  -0.143695033150294470f,
  0.989176509964781010f, -0.146730474455361750f, 0.988721691960323780f,
  -0.149764534677321510f,
  0.988257567730749460f, -0.152797185258443440f, 0.987784141644572180f,
  -0.155828397654265230f,
  0.987301418157858430f, -0.158858143333861450f, 0.986809401814185530f,
  -0.161886393780111830f,
  0.986308097244598670f, -0.164913120489969890f, 0.985797509167567480f,
  -0.167938294974731170f,
  0.985277642388941220f, -0.170961888760301220f, 0.984748501801904210f,
  -0.173983873387463820f,
  0.984210092386929030f, -0.177004220412148750f, 0.983662419211730250f,
  -0.180022901405699510f,
  0.983105487431216290f, -0.183039887955140950f, 0.982539302287441240f,
  -0.186055151663446630f,
  0.981963869109555240f, -0.189068664149806190f, 0.981379193313754560f,
  -0.192080397049892440f,
  0.980785280403230430f, -0.195090322016128250f, 0.980182135968117430f,
  -0.198098410717953560f,
  0.979569765685440520f, -0.201104634842091900f, 0.978948175319062200f,
  -0.204108966092816870f,
  0.978317370719627650f, -0.207111376192218560f, 0.977677357824509930f,
  -0.210111836880469610f,
  0.977028142657754390f, -0.213110319916091360f, 0.976369731330021140f,
  -0.216106797076219520f,
  0.975702130038528570f, -0.219101240156869800f, 0.975025345066994120f,
  -0.222093620973203510f,