| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * (C)Copyright 1998,1999 SysKonnect, |
| 4 | * a business unit of Schneider & Koch & Co. Datensysteme GmbH. |
| 5 | * |
| 6 | * See the file "skfddi.c" for further information. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * The information in this file is provided "AS IS" without warranty. |
| 14 | * |
| 15 | ******************************************************************************/ |
| 16 | |
| 17 | #ifndef lint |
| 18 | static const char xID_sccs[] = "@(#)can.c 1.5 97/04/07 (C) SK " ; |
| 19 | #endif |
| 20 | |
| 21 | /* |
| 22 | * canonical bit order |
| 23 | */ |
| 24 | const u_char canonical[256] = { |
| 25 | 0x00,0x80,0x40,0xc0,0x20,0xa0,0x60,0xe0, |
| 26 | 0x10,0x90,0x50,0xd0,0x30,0xb0,0x70,0xf0, |
| 27 | 0x08,0x88,0x48,0xc8,0x28,0xa8,0x68,0xe8, |
| 28 | 0x18,0x98,0x58,0xd8,0x38,0xb8,0x78,0xf8, |
| 29 | 0x04,0x84,0x44,0xc4,0x24,0xa4,0x64,0xe4, |
| 30 | 0x14,0x94,0x54,0xd4,0x34,0xb4,0x74,0xf4, |
| 31 | 0x0c,0x8c,0x4c,0xcc,0x2c,0xac,0x6c,0xec, |
| 32 | 0x1c,0x9c,0x5c,0xdc,0x3c,0xbc,0x7c,0xfc, |
| 33 | 0x02,0x82,0x42,0xc2,0x22,0xa2,0x62,0xe2, |
| 34 | 0x12,0x92,0x52,0xd2,0x32,0xb2,0x72,0xf2, |
| 35 | 0x0a,0x8a,0x4a,0xca,0x2a,0xaa,0x6a,0xea, |
| 36 | 0x1a,0x9a,0x5a,0xda,0x3a,0xba,0x7a,0xfa, |
| 37 | 0x06,0x86,0x46,0xc6,0x26,0xa6,0x66,0xe6, |
| 38 | 0x16,0x96,0x56,0xd6,0x36,0xb6,0x76,0xf6, |
| 39 | 0x0e,0x8e,0x4e,0xce,0x2e,0xae,0x6e,0xee, |
| 40 | 0x1e,0x9e,0x5e,0xde,0x3e,0xbe,0x7e,0xfe, |
| 41 | 0x01,0x81,0x41,0xc1,0x21,0xa1,0x61,0xe1, |
| 42 | 0x11,0x91,0x51,0xd1,0x31,0xb1,0x71,0xf1, |
| 43 | 0x09,0x89,0x49,0xc9,0x29,0xa9,0x69,0xe9, |
| 44 | 0x19,0x99,0x59,0xd9,0x39,0xb9,0x79,0xf9, |
| 45 | 0x05,0x85,0x45,0xc5,0x25,0xa5,0x65,0xe5, |
| 46 | 0x15,0x95,0x55,0xd5,0x35,0xb5,0x75,0xf5, |
| 47 | 0x0d,0x8d,0x4d,0xcd,0x2d,0xad,0x6d,0xed, |
| 48 | 0x1d,0x9d,0x5d,0xdd,0x3d,0xbd,0x7d,0xfd, |
| 49 | 0x03,0x83,0x43,0xc3,0x23,0xa3,0x63,0xe3, |
| 50 | 0x13,0x93,0x53,0xd3,0x33,0xb3,0x73,0xf3, |
| 51 | 0x0b,0x8b,0x4b,0xcb,0x2b,0xab,0x6b,0xeb, |
| 52 | 0x1b,0x9b,0x5b,0xdb,0x3b,0xbb,0x7b,0xfb, |
| 53 | 0x07,0x87,0x47,0xc7,0x27,0xa7,0x67,0xe7, |
| 54 | 0x17,0x97,0x57,0xd7,0x37,0xb7,0x77,0xf7, |
| 55 | 0x0f,0x8f,0x4f,0xcf,0x2f,0xaf,0x6f,0xef, |
| 56 | 0x1f,0x9f,0x5f,0xdf,0x3f,0xbf,0x7f,0xff |
| 57 | } ; |
| 58 | |
| 59 | #ifdef MAKE_TABLE |
| 60 | int byte_reverse(x) |
| 61 | int x ; |
| 62 | { |
| 63 | int y = 0 ; |
| 64 | |
| 65 | if (x & 0x01) |
| 66 | y |= 0x80 ; |
| 67 | if (x & 0x02) |
| 68 | y |= 0x40 ; |
| 69 | if (x & 0x04) |
| 70 | y |= 0x20 ; |
| 71 | if (x & 0x08) |
| 72 | y |= 0x10 ; |
| 73 | if (x & 0x10) |
| 74 | y |= 0x08 ; |
| 75 | if (x & 0x20) |
| 76 | y |= 0x04 ; |
| 77 | if (x & 0x40) |
| 78 | y |= 0x02 ; |
| 79 | if (x & 0x80) |
| 80 | y |= 0x01 ; |
| 81 | return(y) ; |
| 82 | } |
| 83 | #endif |