| /* |
| * Inverse table |
| * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <stdint.h> |
| |
| /* a*inverse[b]>>32 == a/b for all 0<=a<=16909558 && 2<=b<=256 |
| * for a>16909558, is an overestimate by less than 1 part in 1<<24 */ |
| const uint32_t ff_inverse[257]={ |
| 0, 4294967295U,2147483648U,1431655766, 1073741824, 858993460, 715827883, 613566757, |
| 536870912, 477218589, 429496730, 390451573, 357913942, 330382100, 306783379, 286331154, |
| 268435456, 252645136, 238609295, 226050911, 214748365, 204522253, 195225787, 186737709, |
| 178956971, 171798692, 165191050, 159072863, 153391690, 148102321, 143165577, 138547333, |
| 134217728, 130150525, 126322568, 122713352, 119304648, 116080198, 113025456, 110127367, |
| 107374183, 104755300, 102261127, 99882961, 97612894, 95443718, 93368855, 91382283, |
| 89478486, 87652394, 85899346, 84215046, 82595525, 81037119, 79536432, 78090315, |
| 76695845, 75350304, 74051161, 72796056, 71582789, 70409300, 69273667, 68174085, |
| 67108864, 66076420, 65075263, 64103990, 63161284, 62245903, 61356676, 60492498, |
| 59652324, 58835169, 58040099, 57266231, 56512728, 55778797, 55063684, 54366675, |
| 53687092, 53024288, 52377650, 51746594, 51130564, 50529028, 49941481, 49367441, |
| 48806447, 48258060, 47721859, 47197443, 46684428, 46182445, 45691142, 45210183, |
| 44739243, 44278014, 43826197, 43383509, 42949673, 42524429, 42107523, 41698712, |
| 41297763, 40904451, 40518560, 40139882, 39768216, 39403370, 39045158, 38693400, |
| 38347923, 38008561, 37675152, 37347542, 37025581, 36709123, 36398028, 36092163, |
| 35791395, 35495598, 35204650, 34918434, 34636834, 34359739, 34087043, 33818641, |
| 33554432, 33294321, 33038210, 32786010, 32537632, 32292988, 32051995, 31814573, |
| 31580642, 31350127, 31122952, 30899046, 30678338, 30460761, 30246249, 30034737, |
| 29826162, 29620465, 29417585, 29217465, 29020050, 28825284, 28633116, 28443493, |
| 28256364, 28071682, 27889399, 27709467, 27531842, 27356480, 27183338, 27012373, |
| 26843546, 26676816, 26512144, 26349493, 26188825, 26030105, 25873297, 25718368, |
| 25565282, 25414008, 25264514, 25116768, 24970741, 24826401, 24683721, 24542671, |
| 24403224, 24265352, 24129030, 23994231, 23860930, 23729102, 23598722, 23469767, |
| 23342214, 23216040, 23091223, 22967740, 22845571, 22724695, 22605092, 22486740, |
| 22369622, 22253717, 22139007, 22025474, 21913099, 21801865, 21691755, 21582751, |
| 21474837, 21367997, 21262215, 21157475, 21053762, 20951060, 20849356, 20748635, |
| 20648882, 20550083, 20452226, 20355296, 20259280, 20164166, 20069941, 19976593, |
| 19884108, 19792477, 19701685, 19611723, 19522579, 19434242, 19346700, 19259944, |
| 19173962, 19088744, 19004281, 18920561, 18837576, 18755316, 18673771, 18592933, |
| 18512791, 18433337, 18354562, 18276457, 18199014, 18122225, 18046082, 17970575, |
| 17895698, 17821442, 17747799, 17674763, 17602325, 17530479, 17459217, 17388532, |
| 17318417, 17248865, 17179870, 17111424, 17043522, 16976156, 16909321, 16843010, |
| 16777216 |
| }; |
