lib/lookup_data.h

   1 /********************************************************************
   2  *                                                                  *
   3  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
   4  * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
   5  * THE GNU LESSER/LIBRARY PUBLIC LICENSE, WHICH IS INCLUDED WITH    *
   6  * THIS SOURCE. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.        *
   7  *                                                                  *
   8  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2000             *
   9  * by Monty <monty@xiph.org> and the XIPHOPHORUS Company            *
  10  * http://www.xiph.org/                                             *
  11  *                                                                  *
  12  ********************************************************************
  13
  14   function: lookup data; generated by lookups.pl; edit there
  15   last mod: $Id: lookup_data.h,v 1.4 2000/12/21 21:04:39 xiphmont Exp $
  16
  17  ********************************************************************/
  18
  19 #ifndef _V_LOOKUP_DATA_H_
  20
  21 #ifdef FLOAT_LOOKUP
  22 #define COS_LOOKUP_SZ 128
  23 static float COS_LOOKUP[COS_LOOKUP_SZ+1]={
  24         +1.0000000000000f,+0.9996988186962f,+0.9987954562052f,+0.9972904566787f,
  25         +0.9951847266722f,+0.9924795345987f,+0.9891765099648f,+0.9852776423889f,
  26         +0.9807852804032f,+0.9757021300385f,+0.9700312531945f,+0.9637760657954f,
  27         +0.9569403357322f,+0.9495281805930f,+0.9415440651830f,+0.9329927988347f,
  28         +0.9238795325113f,+0.9142097557035f,+0.9039892931234f,+0.8932243011955f,
  29         +0.8819212643484f,+0.8700869911087f,+0.8577286100003f,+0.8448535652497f,
  30         +0.8314696123025f,+0.8175848131516f,+0.8032075314806f,+0.7883464276266f,
  31         +0.7730104533627f,+0.7572088465065f,+0.7409511253550f,+0.7242470829515f,
  32         +0.7071067811865f,+0.6895405447371f,+0.6715589548470f,+0.6531728429538f,
  33         +0.6343932841636f,+0.6152315905806f,+0.5956993044924f,+0.5758081914178f,
  34         +0.5555702330196f,+0.5349976198871f,+0.5141027441932f,+0.4928981922298f,
  35         +0.4713967368260f,+0.4496113296546f,+0.4275550934303f,+0.4052413140050f,
  36         +0.3826834323651f,+0.3598950365350f,+0.3368898533922f,+0.3136817403989f,
  37         +0.2902846772545f,+0.2667127574749f,+0.2429801799033f,+0.2191012401569f,
  38         +0.1950903220161f,+0.1709618887603f,+0.1467304744554f,+0.1224106751992f,
  39         +0.0980171403296f,+0.0735645635997f,+0.0490676743274f,+0.0245412285229f,
  40         +0.0000000000000f,-0.0245412285229f,-0.0490676743274f,-0.0735645635997f,
  41         -0.0980171403296f,-0.1224106751992f,-0.1467304744554f,-0.1709618887603f,
  42         -0.1950903220161f,-0.2191012401569f,-0.2429801799033f,-0.2667127574749f,
  43         -0.2902846772545f,-0.3136817403989f,-0.3368898533922f,-0.3598950365350f,
  44         -0.3826834323651f,-0.4052413140050f,-0.4275550934303f,-0.4496113296546f,
  45         -0.4713967368260f,-0.4928981922298f,-0.5141027441932f,-0.5349976198871f,
  46         -0.5555702330196f,-0.5758081914178f,-0.5956993044924f,-0.6152315905806f,
  47         -0.6343932841636f,-0.6531728429538f,-0.6715589548470f,-0.6895405447371f,
  48         -0.7071067811865f,-0.7242470829515f,-0.7409511253550f,-0.7572088465065f,
  49         -0.7730104533627f,-0.7883464276266f,-0.8032075314806f,-0.8175848131516f,
  50         -0.8314696123025f,-0.8448535652497f,-0.8577286100003f,-0.8700869911087f,
  51         -0.8819212643484f,-0.8932243011955f,-0.9039892931234f,-0.9142097557035f,
  52         -0.9238795325113f,-0.9329927988347f,-0.9415440651830f,-0.9495281805930f,
  53         -0.9569403357322f,-0.9637760657954f,-0.9700312531945f,-0.9757021300385f,
  54         -0.9807852804032f,-0.9852776423889f,-0.9891765099648f,-0.9924795345987f,
  55         -0.9951847266722f,-0.9972904566787f,-0.9987954562052f,-0.9996988186962f,
  56         -1.0000000000000f,
  57 };
  58
  59 #define INVSQ_LOOKUP_SZ 32
  60 static float INVSQ_LOOKUP[INVSQ_LOOKUP_SZ+1]={
  61         1.414213562373f,1.392621247646f,1.371988681140f,1.352246807566f,
  62         1.333333333333f,1.315191898443f,1.297771369046f,1.281025230441f,
  63         1.264911064067f,1.249390095109f,1.234426799697f,1.219988562661f,
  64         1.206045378311f,1.192569588000f,1.179535649239f,1.166919931983f,
  65         1.154700538379f,1.142857142857f,1.131370849898f,1.120224067222f,
  66         1.109400392450f,1.098884511590f,1.088662107904f,1.078719779941f,
  67         1.069044967650f,1.059625885652f,1.050451462878f,1.041511287847f,
  68         1.032795558989f,1.024295039463f,1.016001016002f,1.007905261358f,
  69         1.000000000000f,
  70 };
  71
  72 #define INVSQ2EXP_LOOKUP_MIN -32
  73 #define INVSQ2EXP_LOOKUP_MAX 32
  74 static float INVSQ2EXP_LOOKUP[INVSQ2EXP_LOOKUP_MAX-\
  75                               INVSQ2EXP_LOOKUP_MIN+1]={
  76                   65536f,    46340.95001f,          32768f,    23170.47501f,
  77                   16384f,     11585.2375f,           8192f,    5792.618751f,
  78                    4096f,    2896.309376f,           2048f,    1448.154688f,
  79                    1024f,    724.0773439f,            512f,     362.038672f,
  80                     256f,     181.019336f,            128f,    90.50966799f,
  81                      64f,      45.254834f,             32f,      22.627417f,
  82                      16f,     11.3137085f,              8f,    5.656854249f,
  83                       4f,    2.828427125f,              2f,    1.414213562f,
  84                       1f,   0.7071067812f,            0.5f,   0.3535533906f,
  85                    0.25f,   0.1767766953f,          0.125f,  0.08838834765f,
  86                  0.0625f,  0.04419417382f,        0.03125f,  0.02209708691f,
  87                0.015625f,  0.01104854346f,      0.0078125f, 0.005524271728f,
  88              0.00390625f, 0.002762135864f,    0.001953125f, 0.001381067932f,
  89            0.0009765625f, 0.000690533966f,  0.00048828125f, 0.000345266983f,
  90          0.000244140625f,0.0001726334915f,0.0001220703125f,8.631674575e-05f,
  91         6.103515625e-05f,4.315837288e-05f,3.051757812e-05f,2.157918644e-05f,
  92         1.525878906e-05f,
  93 };
  94
  95 #endif
  96
  97 #define FROMdB_LOOKUP_SZ 35
  98 #define FROMdB2_LOOKUP_SZ 32
  99 #define FROMdB_SHIFT 5
 100 #define FROMdB2_SHIFT 3
 101 #define FROMdB2_MASK 31
 102 static float FROMdB_LOOKUP[FROMdB_LOOKUP_SZ]={
 103                      1.f,   0.6309573445f,   0.3981071706f,   0.2511886432f,
 104            0.1584893192f,            0.1f,  0.06309573445f,  0.03981071706f,
 105           0.02511886432f,  0.01584893192f,           0.01f, 0.006309573445f,
 106          0.003981071706f, 0.002511886432f, 0.001584893192f,          0.001f,
 107         0.0006309573445f,0.0003981071706f,0.0002511886432f,0.0001584893192f,
 108                  0.0001f,6.309573445e-05f,3.981071706e-05f,2.511886432e-05f,
 109         1.584893192e-05f,          1e-05f,6.309573445e-06f,3.981071706e-06f,
 110         2.511886432e-06f,1.584893192e-06f,          1e-06f,6.309573445e-07f,
 111         3.981071706e-07f,2.511886432e-07f,1.584893192e-07f,
 112 };
 113
 114 static float FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={
 115            0.9928302478f,   0.9786445908f,   0.9646616199f,   0.9508784391f,
 116            0.9372921937f,     0.92390007f,   0.9106992942f,   0.8976871324f,
 117            0.8848608897f,   0.8722179097f,   0.8597555737f,   0.8474713009f,
 118             0.835362547f,   0.8234268041f,   0.8116616003f,   0.8000644989f,
 119            0.7886330981f,   0.7773650302f,   0.7662579617f,    0.755309592f,
 120            0.7445176537f,   0.7338799116f,   0.7233941627f,   0.7130582353f,
 121            0.7028699885f,   0.6928273125f,   0.6829281272f,   0.6731703824f,
 122            0.6635520573f,   0.6540711597f,   0.6447257262f,   0.6355138211f,
 123 };
 124
 125 #ifdef INT_LOOKUP
 126
 127 #define INVSQ_LOOKUP_I_SHIFT 10
 128 #define INVSQ_LOOKUP_I_MASK 1023
 129 static long INVSQ_LOOKUP_I[64+1]={
 130            92682l,   91966l,   91267l,   90583l,
 131            89915l,   89261l,   88621l,   87995l,
 132            87381l,   86781l,   86192l,   85616l,
 133            85051l,   84497l,   83953l,   83420l,
 134            82897l,   82384l,   81880l,   81385l,
 135            80899l,   80422l,   79953l,   79492l,
 136            79039l,   78594l,   78156l,   77726l,
 137            77302l,   76885l,   76475l,   76072l,
 138            75674l,   75283l,   74898l,   74519l,
 139            74146l,   73778l,   73415l,   73058l,
 140            72706l,   72359l,   72016l,   71679l,
 141            71347l,   71019l,   70695l,   70376l,
 142            70061l,   69750l,   69444l,   69141l,
 143            68842l,   68548l,   68256l,   67969l,
 144            67685l,   67405l,   67128l,   66855l,
 145            66585l,   66318l,   66054l,   65794l,
 146            65536l,
 147 };
 148
 149 #define COS_LOOKUP_I_SHIFT 9
 150 #define COS_LOOKUP_I_MASK 511
 151 #define COS_LOOKUP_I_SZ 128
 152 static long COS_LOOKUP_I[COS_LOOKUP_I_SZ+1]={
 153            16384l,   16379l,   16364l,   16340l,
 154            16305l,   16261l,   16207l,   16143l,
 155            16069l,   15986l,   15893l,   15791l,
 156            15679l,   15557l,   15426l,   15286l,
 157            15137l,   14978l,   14811l,   14635l,
 158            14449l,   14256l,   14053l,   13842l,
 159            13623l,   13395l,   13160l,   12916l,
 160            12665l,   12406l,   12140l,   11866l,
 161            11585l,   11297l,   11003l,   10702l,
 162            10394l,   10080l,    9760l,    9434l,
 163             9102l,    8765l,    8423l,    8076l,
 164             7723l,    7366l,    7005l,    6639l,
 165             6270l,    5897l,    5520l,    5139l,
 166             4756l,    4370l,    3981l,    3590l,
 167             3196l,    2801l,    2404l,    2006l,
 168             1606l,    1205l,     804l,     402l,
 169                0l,    -401l,    -803l,   -1204l,
 170            -1605l,   -2005l,   -2403l,   -2800l,
 171            -3195l,   -3589l,   -3980l,   -4369l,
 172            -4755l,   -5138l,   -5519l,   -5896l,
 173            -6269l,   -6638l,   -7004l,   -7365l,
 174            -7722l,   -8075l,   -8422l,   -8764l,
 175            -9101l,   -9433l,   -9759l,  -10079l,
 176           -10393l,  -10701l,  -11002l,  -11296l,
 177           -11584l,  -11865l,  -12139l,  -12405l,
 178           -12664l,  -12915l,  -13159l,  -13394l,
 179           -13622l,  -13841l,  -14052l,  -14255l,
 180           -14448l,  -14634l,  -14810l,  -14977l,
 181           -15136l,  -15285l,  -15425l,  -15556l,
 182           -15678l,  -15790l,  -15892l,  -15985l,
 183           -16068l,  -16142l,  -16206l,  -16260l,
 184           -16304l,  -16339l,  -16363l,  -16378l,
 185           -16383l,
 186 };
 187
 188 #endif
 189
 190 #endif