xref: /plan9/sys/src/cmd/bzip2/lib/crctable.c (revision 59cc4ca53493a3c6d2349fe2b7f7c40f7dce7294) 
1*59cc4ca5SDavid du Colombier 
2*59cc4ca5SDavid du Colombier /*-------------------------------------------------------------*/
3*59cc4ca5SDavid du Colombier /*--- Table for doing CRCs                                  ---*/
4*59cc4ca5SDavid du Colombier /*---                                            crctable.c ---*/
5*59cc4ca5SDavid du Colombier /*-------------------------------------------------------------*/
6*59cc4ca5SDavid du Colombier 
7*59cc4ca5SDavid du Colombier /*--
8*59cc4ca5SDavid du Colombier   This file is a part of bzip2 and/or libbzip2, a program and
9*59cc4ca5SDavid du Colombier   library for lossless, block-sorting data compression.
10*59cc4ca5SDavid du Colombier 
11*59cc4ca5SDavid du Colombier   Copyright (C) 1996-2000 Julian R Seward.  All rights reserved.
12*59cc4ca5SDavid du Colombier 
13*59cc4ca5SDavid du Colombier   Redistribution and use in source and binary forms, with or without
14*59cc4ca5SDavid du Colombier   modification, are permitted provided that the following conditions
15*59cc4ca5SDavid du Colombier   are met:
16*59cc4ca5SDavid du Colombier 
17*59cc4ca5SDavid du Colombier   1. Redistributions of source code must retain the above copyright
18*59cc4ca5SDavid du Colombier      notice, this list of conditions and the following disclaimer.
19*59cc4ca5SDavid du Colombier 
20*59cc4ca5SDavid du Colombier   2. The origin of this software must not be misrepresented; you must
21*59cc4ca5SDavid du Colombier      not claim that you wrote the original software.  If you use this
22*59cc4ca5SDavid du Colombier      software in a product, an acknowledgment in the product
23*59cc4ca5SDavid du Colombier      documentation would be appreciated but is not required.
24*59cc4ca5SDavid du Colombier 
25*59cc4ca5SDavid du Colombier   3. Altered source versions must be plainly marked as such, and must
26*59cc4ca5SDavid du Colombier      not be misrepresented as being the original software.
27*59cc4ca5SDavid du Colombier 
28*59cc4ca5SDavid du Colombier   4. The name of the author may not be used to endorse or promote
29*59cc4ca5SDavid du Colombier      products derived from this software without specific prior written
30*59cc4ca5SDavid du Colombier      permission.
31*59cc4ca5SDavid du Colombier 
32*59cc4ca5SDavid du Colombier   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
33*59cc4ca5SDavid du Colombier   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
34*59cc4ca5SDavid du Colombier   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35*59cc4ca5SDavid du Colombier   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
36*59cc4ca5SDavid du Colombier   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37*59cc4ca5SDavid du Colombier   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
38*59cc4ca5SDavid du Colombier   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
39*59cc4ca5SDavid du Colombier   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
40*59cc4ca5SDavid du Colombier   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
41*59cc4ca5SDavid du Colombier   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
42*59cc4ca5SDavid du Colombier   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43*59cc4ca5SDavid du Colombier 
44*59cc4ca5SDavid du Colombier   Julian Seward, Cambridge, UK.
45*59cc4ca5SDavid du Colombier   jseward@acm.org
46*59cc4ca5SDavid du Colombier   bzip2/libbzip2 version 1.0 of 21 March 2000
47*59cc4ca5SDavid du Colombier 
48*59cc4ca5SDavid du Colombier   This program is based on (at least) the work of:
49*59cc4ca5SDavid du Colombier      Mike Burrows
50*59cc4ca5SDavid du Colombier      David Wheeler
51*59cc4ca5SDavid du Colombier      Peter Fenwick
52*59cc4ca5SDavid du Colombier      Alistair Moffat
53*59cc4ca5SDavid du Colombier      Radford Neal
54*59cc4ca5SDavid du Colombier      Ian H. Witten
55*59cc4ca5SDavid du Colombier      Robert Sedgewick
56*59cc4ca5SDavid du Colombier      Jon L. Bentley
57*59cc4ca5SDavid du Colombier 
58*59cc4ca5SDavid du Colombier   For more information on these sources, see the manual.
59*59cc4ca5SDavid du Colombier --*/
60*59cc4ca5SDavid du Colombier 
61*59cc4ca5SDavid du Colombier #include "os.h"
62*59cc4ca5SDavid du Colombier #include "bzlib.h"
63*59cc4ca5SDavid du Colombier #include "bzlib_private.h"
64*59cc4ca5SDavid du Colombier 
65*59cc4ca5SDavid du Colombier /*--
66*59cc4ca5SDavid du Colombier   I think this is an implementation of the AUTODIN-II,
67*59cc4ca5SDavid du Colombier   Ethernet & FDDI 32-bit CRC standard.  Vaguely derived
68*59cc4ca5SDavid du Colombier   from code by Rob Warnock, in Section 51 of the
69*59cc4ca5SDavid du Colombier   comp.compression FAQ.
70*59cc4ca5SDavid du Colombier --*/
71*59cc4ca5SDavid du Colombier 
72*59cc4ca5SDavid du Colombier UInt32 BZ2_crc32Table[256] = {
73*59cc4ca5SDavid du Colombier 
74*59cc4ca5SDavid du Colombier    /*-- Ugly, innit? --*/
75*59cc4ca5SDavid du Colombier 
76*59cc4ca5SDavid du Colombier    0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L,
77*59cc4ca5SDavid du Colombier    0x130476dcL, 0x17c56b6bL, 0x1a864db2L, 0x1e475005L,
78*59cc4ca5SDavid du Colombier    0x2608edb8L, 0x22c9f00fL, 0x2f8ad6d6L, 0x2b4bcb61L,
79*59cc4ca5SDavid du Colombier    0x350c9b64L, 0x31cd86d3L, 0x3c8ea00aL, 0x384fbdbdL,
80*59cc4ca5SDavid du Colombier    0x4c11db70L, 0x48d0c6c7L, 0x4593e01eL, 0x4152fda9L,
81*59cc4ca5SDavid du Colombier    0x5f15adacL, 0x5bd4b01bL, 0x569796c2L, 0x52568b75L,
82*59cc4ca5SDavid du Colombier    0x6a1936c8L, 0x6ed82b7fL, 0x639b0da6L, 0x675a1011L,
83*59cc4ca5SDavid du Colombier    0x791d4014L, 0x7ddc5da3L, 0x709f7b7aL, 0x745e66cdL,
84*59cc4ca5SDavid du Colombier    0x9823b6e0L, 0x9ce2ab57L, 0x91a18d8eL, 0x95609039L,
85*59cc4ca5SDavid du Colombier    0x8b27c03cL, 0x8fe6dd8bL, 0x82a5fb52L, 0x8664e6e5L,
86*59cc4ca5SDavid du Colombier    0xbe2b5b58L, 0xbaea46efL, 0xb7a96036L, 0xb3687d81L,
87*59cc4ca5SDavid du Colombier    0xad2f2d84L, 0xa9ee3033L, 0xa4ad16eaL, 0xa06c0b5dL,
88*59cc4ca5SDavid du Colombier    0xd4326d90L, 0xd0f37027L, 0xddb056feL, 0xd9714b49L,
89*59cc4ca5SDavid du Colombier    0xc7361b4cL, 0xc3f706fbL, 0xceb42022L, 0xca753d95L,
90*59cc4ca5SDavid du Colombier    0xf23a8028L, 0xf6fb9d9fL, 0xfbb8bb46L, 0xff79a6f1L,
91*59cc4ca5SDavid du Colombier    0xe13ef6f4L, 0xe5ffeb43L, 0xe8bccd9aL, 0xec7dd02dL,
92*59cc4ca5SDavid du Colombier    0x34867077L, 0x30476dc0L, 0x3d044b19L, 0x39c556aeL,
93*59cc4ca5SDavid du Colombier    0x278206abL, 0x23431b1cL, 0x2e003dc5L, 0x2ac12072L,
94*59cc4ca5SDavid du Colombier    0x128e9dcfL, 0x164f8078L, 0x1b0ca6a1L, 0x1fcdbb16L,
95*59cc4ca5SDavid du Colombier    0x018aeb13L, 0x054bf6a4L, 0x0808d07dL, 0x0cc9cdcaL,
96*59cc4ca5SDavid du Colombier    0x7897ab07L, 0x7c56b6b0L, 0x71159069L, 0x75d48ddeL,
97*59cc4ca5SDavid du Colombier    0x6b93dddbL, 0x6f52c06cL, 0x6211e6b5L, 0x66d0fb02L,
98*59cc4ca5SDavid du Colombier    0x5e9f46bfL, 0x5a5e5b08L, 0x571d7dd1L, 0x53dc6066L,
99*59cc4ca5SDavid du Colombier    0x4d9b3063L, 0x495a2dd4L, 0x44190b0dL, 0x40d816baL,
100*59cc4ca5SDavid du Colombier    0xaca5c697L, 0xa864db20L, 0xa527fdf9L, 0xa1e6e04eL,
101*59cc4ca5SDavid du Colombier    0xbfa1b04bL, 0xbb60adfcL, 0xb6238b25L, 0xb2e29692L,
102*59cc4ca5SDavid du Colombier    0x8aad2b2fL, 0x8e6c3698L, 0x832f1041L, 0x87ee0df6L,
103*59cc4ca5SDavid du Colombier    0x99a95df3L, 0x9d684044L, 0x902b669dL, 0x94ea7b2aL,
104*59cc4ca5SDavid du Colombier    0xe0b41de7L, 0xe4750050L, 0xe9362689L, 0xedf73b3eL,
105*59cc4ca5SDavid du Colombier    0xf3b06b3bL, 0xf771768cL, 0xfa325055L, 0xfef34de2L,
106*59cc4ca5SDavid du Colombier    0xc6bcf05fL, 0xc27dede8L, 0xcf3ecb31L, 0xcbffd686L,
107*59cc4ca5SDavid du Colombier    0xd5b88683L, 0xd1799b34L, 0xdc3abdedL, 0xd8fba05aL,
108*59cc4ca5SDavid du Colombier    0x690ce0eeL, 0x6dcdfd59L, 0x608edb80L, 0x644fc637L,
109*59cc4ca5SDavid du Colombier    0x7a089632L, 0x7ec98b85L, 0x738aad5cL, 0x774bb0ebL,
110*59cc4ca5SDavid du Colombier    0x4f040d56L, 0x4bc510e1L, 0x46863638L, 0x42472b8fL,
111*59cc4ca5SDavid du Colombier    0x5c007b8aL, 0x58c1663dL, 0x558240e4L, 0x51435d53L,
112*59cc4ca5SDavid du Colombier    0x251d3b9eL, 0x21dc2629L, 0x2c9f00f0L, 0x285e1d47L,
113*59cc4ca5SDavid du Colombier    0x36194d42L, 0x32d850f5L, 0x3f9b762cL, 0x3b5a6b9bL,
114*59cc4ca5SDavid du Colombier    0x0315d626L, 0x07d4cb91L, 0x0a97ed48L, 0x0e56f0ffL,
115*59cc4ca5SDavid du Colombier    0x1011a0faL, 0x14d0bd4dL, 0x19939b94L, 0x1d528623L,
116*59cc4ca5SDavid du Colombier    0xf12f560eL, 0xf5ee4bb9L, 0xf8ad6d60L, 0xfc6c70d7L,
117*59cc4ca5SDavid du Colombier    0xe22b20d2L, 0xe6ea3d65L, 0xeba91bbcL, 0xef68060bL,
118*59cc4ca5SDavid du Colombier    0xd727bbb6L, 0xd3e6a601L, 0xdea580d8L, 0xda649d6fL,
119*59cc4ca5SDavid du Colombier    0xc423cd6aL, 0xc0e2d0ddL, 0xcda1f604L, 0xc960ebb3L,
120*59cc4ca5SDavid du Colombier    0xbd3e8d7eL, 0xb9ff90c9L, 0xb4bcb610L, 0xb07daba7L,
121*59cc4ca5SDavid du Colombier    0xae3afba2L, 0xaafbe615L, 0xa7b8c0ccL, 0xa379dd7bL,
122*59cc4ca5SDavid du Colombier    0x9b3660c6L, 0x9ff77d71L, 0x92b45ba8L, 0x9675461fL,
123*59cc4ca5SDavid du Colombier    0x8832161aL, 0x8cf30badL, 0x81b02d74L, 0x857130c3L,
124*59cc4ca5SDavid du Colombier    0x5d8a9099L, 0x594b8d2eL, 0x5408abf7L, 0x50c9b640L,
125*59cc4ca5SDavid du Colombier    0x4e8ee645L, 0x4a4ffbf2L, 0x470cdd2bL, 0x43cdc09cL,
126*59cc4ca5SDavid du Colombier    0x7b827d21L, 0x7f436096L, 0x7200464fL, 0x76c15bf8L,
127*59cc4ca5SDavid du Colombier    0x68860bfdL, 0x6c47164aL, 0x61043093L, 0x65c52d24L,
128*59cc4ca5SDavid du Colombier    0x119b4be9L, 0x155a565eL, 0x18197087L, 0x1cd86d30L,
129*59cc4ca5SDavid du Colombier    0x029f3d35L, 0x065e2082L, 0x0b1d065bL, 0x0fdc1becL,
130*59cc4ca5SDavid du Colombier    0x3793a651L, 0x3352bbe6L, 0x3e119d3fL, 0x3ad08088L,
131*59cc4ca5SDavid du Colombier    0x2497d08dL, 0x2056cd3aL, 0x2d15ebe3L, 0x29d4f654L,
132*59cc4ca5SDavid du Colombier    0xc5a92679L, 0xc1683bceL, 0xcc2b1d17L, 0xc8ea00a0L,
133*59cc4ca5SDavid du Colombier    0xd6ad50a5L, 0xd26c4d12L, 0xdf2f6bcbL, 0xdbee767cL,
134*59cc4ca5SDavid du Colombier    0xe3a1cbc1L, 0xe760d676L, 0xea23f0afL, 0xeee2ed18L,
135*59cc4ca5SDavid du Colombier    0xf0a5bd1dL, 0xf464a0aaL, 0xf9278673L, 0xfde69bc4L,
136*59cc4ca5SDavid du Colombier    0x89b8fd09L, 0x8d79e0beL, 0x803ac667L, 0x84fbdbd0L,
137*59cc4ca5SDavid du Colombier    0x9abc8bd5L, 0x9e7d9662L, 0x933eb0bbL, 0x97ffad0cL,
138*59cc4ca5SDavid du Colombier    0xafb010b1L, 0xab710d06L, 0xa6322bdfL, 0xa2f33668L,
139*59cc4ca5SDavid du Colombier    0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L
140*59cc4ca5SDavid du Colombier };
141*59cc4ca5SDavid du Colombier 
142*59cc4ca5SDavid du Colombier 
143*59cc4ca5SDavid du Colombier /*-------------------------------------------------------------*/
144*59cc4ca5SDavid du Colombier /*--- end                                        crctable.c ---*/
145*59cc4ca5SDavid du Colombier /*-------------------------------------------------------------*/
146