ref: b6a2c3b8eb4bd7e5773b6f5294baaddb66cd5fd7
dir: /amr-wb/isp_isf.tab/
/*-----------------------------------------------------*
| Tables for function Isf_isp() and Isp_isf() |
*-----------------------------------------------------*/
/* table of cos(x) in Q15 */
static Word16 table[129] = {
32767,
32758, 32729, 32679, 32610, 32522, 32413, 32286, 32138,
31972, 31786, 31581, 31357, 31114, 30853, 30572, 30274,
29957, 29622, 29269, 28899, 28511, 28106, 27684, 27246,
26791, 26320, 25833, 25330, 24812, 24279, 23732, 23170,
22595, 22006, 21403, 20788, 20160, 19520, 18868, 18205,
17531, 16846, 16151, 15447, 14733, 14010, 13279, 12540,
11793, 11039, 10279, 9512, 8740, 7962, 7180, 6393,
5602, 4808, 4011, 3212, 2411, 1608, 804, 0,
-804, -1608, -2411, -3212, -4011, -4808, -5602, -6393,
-7180, -7962, -8740, -9512, -10279, -11039, -11793, -12540,
-13279, -14010, -14733, -15447, -16151, -16846, -17531, -18205,
-18868, -19520, -20160, -20788, -21403, -22006, -22595, -23170,
-23732, -24279, -24812, -25330, -25833, -26320, -26791, -27246,
-27684, -28106, -28511, -28899, -29269, -29622, -29957, -30274,
-30572, -30853, -31114, -31357, -31581, -31786, -31972, -32138,
-32286, -32413, -32522, -32610, -32679, -32729, -32758, -32768};
/* slope in Q11 used to compute y = acos(x) */
static Word16 slope[128] = {
-26214, -9039, -5243, -3799, -2979, -2405, -2064, -1771,
-1579, -1409, -1279, -1170, -1079, -1004, -933, -880,
-827, -783, -743, -708, -676, -647, -621, -599,
-576, -557, -538, -521, -506, -492, -479, -466,
-456, -445, -435, -426, -417, -410, -402, -395,
-389, -383, -377, -372, -367, -363, -359, -355,
-351, -348, -345, -342, -340, -337, -335, -333,
-331, -330, -329, -328, -327, -326, -326, -326,
-326, -326, -326, -327, -328, -329, -330, -331,
-333, -335, -337, -340, -342, -345, -348, -351,
-355, -359, -363, -367, -372, -377, -383, -389,
-395, -402, -410, -417, -426, -435, -445, -456,
-466, -479, -492, -506, -521, -538, -557, -576,
-599, -621, -647, -676, -708, -743, -783, -827,
-880, -933, -1004, -1079, -1170, -1279, -1409, -1579,
-1771, -2064, -2405, -2979, -3799, -5243, -9039, -26214};