isp_isf.tab revision 956c553ab0ce72f8074ad0fda2ffd66a0305700c 
1/*
2 ** Copyright 2003-2010, VisualOn, Inc.
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 **     http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17
18/*-----------------------------------------------------*
19 | Tables for function Isf_isp() and Isp_isf()         |
20 *-----------------------------------------------------*/
21
22/* table of cos(x) in Q15 */
23
24const static Word16 table[129] = {
25  32767,
26  32758,  32729,  32679,  32610,  32522,  32413,  32286,  32138,
27  31972,  31786,  31581,  31357,  31114,  30853,  30572,  30274,
28  29957,  29622,  29269,  28899,  28511,  28106,  27684,  27246,
29  26791,  26320,  25833,  25330,  24812,  24279,  23732,  23170,
30  22595,  22006,  21403,  20788,  20160,  19520,  18868,  18205,
31  17531,  16846,  16151,  15447,  14733,  14010,  13279,  12540,
32  11793,  11039,  10279,   9512,   8740,   7962,   7180,   6393,
33   5602,   4808,   4011,   3212,   2411,   1608,    804,      0,
34   -804,  -1608,  -2411,  -3212,  -4011,  -4808,  -5602,  -6393,
35  -7180,  -7962,  -8740,  -9512, -10279, -11039, -11793, -12540,
36 -13279, -14010, -14733, -15447, -16151, -16846, -17531, -18205,
37 -18868, -19520, -20160, -20788, -21403, -22006, -22595, -23170,
38 -23732, -24279, -24812, -25330, -25833, -26320, -26791, -27246,
39 -27684, -28106, -28511, -28899, -29269, -29622, -29957, -30274,
40 -30572, -30853, -31114, -31357, -31581, -31786, -31972, -32138,
41 -32286, -32413, -32522, -32610, -32679, -32729, -32758, -32768};
42
43/* slope in Q11 used to compute y = acos(x) */
44
45const static Word16 slope[128] = {
46 -26214, -9039, -5243, -3799, -2979, -2405, -2064, -1771,
47 -1579, -1409, -1279, -1170, -1079, -1004, -933, -880,
48 -827, -783, -743, -708, -676, -647, -621, -599,
49 -576, -557, -538, -521, -506, -492, -479, -466,
50 -456, -445, -435, -426, -417, -410, -402, -395,
51 -389, -383, -377, -372, -367, -363, -359, -355,
52 -351, -348, -345, -342, -340, -337, -335, -333,
53 -331, -330, -329, -328, -327, -326, -326, -326,
54 -326, -326, -326, -327, -328, -329, -330, -331,
55 -333, -335, -337, -340, -342, -345, -348, -351,
56 -355, -359, -363, -367, -372, -377, -383, -389,
57 -395, -402, -410, -417, -426, -435, -445, -456,
58 -466, -479, -492, -506, -521, -538, -557, -576,
59 -599, -621, -647, -676, -708, -743, -783, -827,
60 -880, -933, -1004, -1079, -1170, -1279, -1409, -1579,
61 -1771, -2064, -2405, -2979, -3799, -5243, -9039, -26214};
62
63