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 1.3 2000/11/06 00:07:01 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         +1.0000000000000,+0.9996988186962,+0.9987954562052,+0.9972904566787,
  25         +0.9951847266722,+0.9924795345987,+0.9891765099648,+0.9852776423889,
  26         +0.9807852804032,+0.9757021300385,+0.9700312531945,+0.9637760657954,
  27         +0.9569403357322,+0.9495281805930,+0.9415440651830,+0.9329927988347,
  28         +0.9238795325113,+0.9142097557035,+0.9039892931234,+0.8932243011955,
  29         +0.8819212643484,+0.8700869911087,+0.8577286100003,+0.8448535652497,
  30         +0.8314696123025,+0.8175848131516,+0.8032075314806,+0.7883464276266,
  31         +0.7730104533627,+0.7572088465065,+0.7409511253550,+0.7242470829515,
  32         +0.7071067811865,+0.6895405447371,+0.6715589548470,+0.6531728429538,
  33         +0.6343932841636,+0.6152315905806,+0.5956993044924,+0.5758081914178,
  34         +0.5555702330196,+0.5349976198871,+0.5141027441932,+0.4928981922298,
  35         +0.4713967368260,+0.4496113296546,+0.4275550934303,+0.4052413140050,
  36         +0.3826834323651,+0.3598950365350,+0.3368898533922,+0.3136817403989,
  37         +0.2902846772545,+0.2667127574749,+0.2429801799033,+0.2191012401569,
  38         +0.1950903220161,+0.1709618887603,+0.1467304744554,+0.1224106751992,
  39         +0.0980171403296,+0.0735645635997,+0.0490676743274,+0.0245412285229,
  40         +0.0000000000000,-0.0245412285229,-0.0490676743274,-0.0735645635997,
  41         -0.0980171403296,-0.1224106751992,-0.1467304744554,-0.1709618887603,
  42         -0.1950903220161,-0.2191012401569,-0.2429801799033,-0.2667127574749,
  43         -0.2902846772545,-0.3136817403989,-0.3368898533922,-0.3598950365350,
  44         -0.3826834323651,-0.4052413140050,-0.4275550934303,-0.4496113296546,
  45         -0.4713967368260,-0.4928981922298,-0.5141027441932,-0.5349976198871,
  46         -0.5555702330196,-0.5758081914178,-0.5956993044924,-0.6152315905806,
  47         -0.6343932841636,-0.6531728429538,-0.6715589548470,-0.6895405447371,
  48         -0.7071067811865,-0.7242470829515,-0.7409511253550,-0.7572088465065,
  49         -0.7730104533627,-0.7883464276266,-0.8032075314806,-0.8175848131516,
  50         -0.8314696123025,-0.8448535652497,-0.8577286100003,-0.8700869911087,
  51         -0.8819212643484,-0.8932243011955,-0.9039892931234,-0.9142097557035,
  52         -0.9238795325113,-0.9329927988347,-0.9415440651830,-0.9495281805930,
  53         -0.9569403357322,-0.9637760657954,-0.9700312531945,-0.9757021300385,
  54         -0.9807852804032,-0.9852776423889,-0.9891765099648,-0.9924795345987,
  55         -0.9951847266722,-0.9972904566787,-0.9987954562052,-0.9996988186962,
  56         -1.0000000000000,
  57 };
  58
  59 #define INVSQ_LOOKUP_SZ 32
  60 static float INVSQ_LOOKUP[INVSQ_LOOKUP_SZ+1]={
  61         1.414213562373,1.392621247646,1.371988681140,1.352246807566,
  62         1.333333333333,1.315191898443,1.297771369046,1.281025230441,
  63         1.264911064067,1.249390095109,1.234426799697,1.219988562661,
  64         1.206045378311,1.192569588000,1.179535649239,1.166919931983,
  65         1.154700538379,1.142857142857,1.131370849898,1.120224067222,
  66         1.109400392450,1.098884511590,1.088662107904,1.078719779941,
  67         1.069044967650,1.059625885652,1.050451462878,1.041511287847,
  68         1.032795558989,1.024295039463,1.016001016002,1.007905261358,
  69         1.000000000000,
  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                   65536,    46340.95001,          32768,    23170.47501,
  77                   16384,     11585.2375,           8192,    5792.618751,
  78                    4096,    2896.309376,           2048,    1448.154688,
  79                    1024,    724.0773439,            512,     362.038672,
  80                     256,     181.019336,            128,    90.50966799,
  81                      64,      45.254834,             32,      22.627417,
  82                      16,     11.3137085,              8,    5.656854249,
  83                       4,    2.828427125,              2,    1.414213562,
  84                       1,   0.7071067812,            0.5,   0.3535533906,
  85                    0.25,   0.1767766953,          0.125,  0.08838834765,
  86                  0.0625,  0.04419417382,        0.03125,  0.02209708691,
  87                0.015625,  0.01104854346,      0.0078125, 0.005524271728,
  88              0.00390625, 0.002762135864,    0.001953125, 0.001381067932,
  89            0.0009765625, 0.000690533966,  0.00048828125, 0.000345266983,
  90          0.000244140625,0.0001726334915,0.0001220703125,8.631674575e-05,
  91         6.103515625e-05,4.315837288e-05,3.051757812e-05,2.157918644e-05,
  92         1.525878906e-05,
  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,   0.6309573445,   0.3981071706,   0.2511886432,
 104            0.1584893192,            0.1,  0.06309573445,  0.03981071706,
 105           0.02511886432,  0.01584893192,           0.01, 0.006309573445,
 106          0.003981071706, 0.002511886432, 0.001584893192,          0.001,
 107         0.0006309573445,0.0003981071706,0.0002511886432,0.0001584893192,
 108                  0.0001,6.309573445e-05,3.981071706e-05,2.511886432e-05,
 109         1.584893192e-05,          1e-05,6.309573445e-06,3.981071706e-06,
 110         2.511886432e-06,1.584893192e-06,          1e-06,6.309573445e-07,
 111         3.981071706e-07,2.511886432e-07,1.584893192e-07,
 112 };
 113
 114 static float FROMdB2_LOOKUP[FROMdB2_LOOKUP_SZ]={
 115            0.9928302478,   0.9786445908,   0.9646616199,   0.9508784391,
 116            0.9372921937,     0.92390007,   0.9106992942,   0.8976871324,
 117            0.8848608897,   0.8722179097,   0.8597555737,   0.8474713009,
 118             0.835362547,   0.8234268041,   0.8116616003,   0.8000644989,
 119            0.7886330981,   0.7773650302,   0.7662579617,    0.755309592,
 120            0.7445176537,   0.7338799116,   0.7233941627,   0.7130582353,
 121            0.7028699885,   0.6928273125,   0.6829281272,   0.6731703824,
 122            0.6635520573,   0.6540711597,   0.6447257262,   0.6355138211,
 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            92682,   91966,   91267,   90583,
 131            89915,   89261,   88621,   87995,
 132            87381,   86781,   86192,   85616,
 133            85051,   84497,   83953,   83420,
 134            82897,   82384,   81880,   81385,
 135            80899,   80422,   79953,   79492,
 136            79039,   78594,   78156,   77726,
 137            77302,   76885,   76475,   76072,
 138            75674,   75283,   74898,   74519,
 139            74146,   73778,   73415,   73058,
 140            72706,   72359,   72016,   71679,
 141            71347,   71019,   70695,   70376,
 142            70061,   69750,   69444,   69141,
 143            68842,   68548,   68256,   67969,
 144            67685,   67405,   67128,   66855,
 145            66585,   66318,   66054,   65794,
 146            65536,
 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            16384,   16379,   16364,   16340,
 154            16305,   16261,   16207,   16143,
 155            16069,   15986,   15893,   15791,
 156            15679,   15557,   15426,   15286,
 157            15137,   14978,   14811,   14635,
 158            14449,   14256,   14053,   13842,
 159            13623,   13395,   13160,   12916,
 160            12665,   12406,   12140,   11866,
 161            11585,   11297,   11003,   10702,
 162            10394,   10080,    9760,    9434,
 163             9102,    8765,    8423,    8076,
 164             7723,    7366,    7005,    6639,
 165             6270,    5897,    5520,    5139,
 166             4756,    4370,    3981,    3590,
 167             3196,    2801,    2404,    2006,
 168             1606,    1205,     804,     402,
 169                0,    -401,    -803,   -1204,
 170            -1605,   -2005,   -2403,   -2800,
 171            -3195,   -3589,   -3980,   -4369,
 172            -4755,   -5138,   -5519,   -5896,
 173            -6269,   -6638,   -7004,   -7365,
 174            -7722,   -8075,   -8422,   -8764,
 175            -9101,   -9433,   -9759,  -10079,
 176           -10393,  -10701,  -11002,  -11296,
 177           -11584,  -11865,  -12139,  -12405,
 178           -12664,  -12915,  -13159,  -13394,
 179           -13622,  -13841,  -14052,  -14255,
 180           -14448,  -14634,  -14810,  -14977,
 181           -15136,  -15285,  -15425,  -15556,
 182           -15678,  -15790,  -15892,  -15985,
 183           -16068,  -16142,  -16206,  -16260,
 184           -16304,  -16339,  -16363,  -16378,
 185           -16383,
 186 };
 187
 188 #endif
 189
 190 #endif