Mercurial > gnulib
annotate lib/crc.c @ 17363:5a51fb7777a9
sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin
Problem reported by Marco Atzeri in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>.
* lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]:
Simply delegate to the system <sys/select.h> in this case too.
Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only
if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to
be needed on Solaris either.
* lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]:
Simply delgate to the system <sys/time.h> in this case.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Tue, 19 Mar 2013 09:08:47 -0700 |
| parents | e542fd46ad6f |
| children | 344018b6e5d7 |
| rev | line source |
|---|---|
| 6357 | 1 /* crc.c -- cyclic redundancy checks |
|
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maint: update all copyright year number ranges
Eric Blake <eblake@redhat.com>
parents:
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2 Copyright (C) 2005-2006, 2009-2013 Free Software Foundation, Inc. |
| 6357 | 3 |
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Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
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4 This program is free software: you can redistribute it and/or modify |
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bbbbbf4cd1c5
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Bruno Haible <bruno@clisp.org>
parents:
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5 it under the terms of the GNU General Public License as published by |
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bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
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6 the Free Software Foundation; either version 3, or (at your option) |
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Bruno Haible <bruno@clisp.org>
parents:
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7 any later version. |
| 6357 | 8 |
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parents:
7584
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9 This program is distributed in the hope that it will be useful, |
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Change copyright notice from GPLv2+ to GPLv3+.
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parents:
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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Bruno Haible <bruno@clisp.org>
parents:
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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Change copyright notice from GPLv2+ to GPLv3+.
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parents:
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12 GNU General Public License for more details. |
| 6357 | 13 |
| 14 You should have received a copy of the GNU General Public License | |
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parents:
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 6357 | 16 |
| 17 /* Written by Simon Josefsson. */ | |
| 18 | |
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* lib/arcfour.c: Assume config.h.
Eric Blake <ebb9@byu.net>
parents:
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19 #include <config.h> |
| 6357 | 20 |
| 21 #include "crc.h" | |
| 22 | |
| 23 /* Table of CRCs of all 8-bit messages. Generated by running code | |
| 24 from RFC 1952 modified to print out the table. */ | |
| 25 static const uint32_t crc32_table[256] = { | |
| 26 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, | |
| 27 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, | |
| 28 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, | |
| 29 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, | |
| 30 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
| 31 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, | |
| 32 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, | |
| 33 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, | |
| 34 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, | |
| 35 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
| 36 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, | |
| 37 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, | |
| 38 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, | |
| 39 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, | |
| 40 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
| 41 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, | |
| 42 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, | |
| 43 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, | |
| 44 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, | |
| 45 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
| 46 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, | |
| 47 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, | |
| 48 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, | |
| 49 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, | |
| 50 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
| 51 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, | |
| 52 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, | |
| 53 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, | |
| 54 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, | |
| 55 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
| 56 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, | |
| 57 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, | |
| 58 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, | |
| 59 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, | |
| 60 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
| 61 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, | |
| 62 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, | |
| 63 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, | |
| 64 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, | |
| 65 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
| 66 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, | |
| 67 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, | |
| 68 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d | |
| 69 }; | |
| 70 | |
| 71 /* | |
| 72 * The following function was extracted from RFC 1952 by Simon | |
| 73 * Josefsson. It was modified to avoid initial and final XOR, to use | |
| 74 * size_t for the buffer length, and to use the const keyword. | |
| 75 */ | |
| 76 uint32_t | |
| 77 crc32_update_no_xor (uint32_t crc, const char *buf, size_t len) | |
| 78 { | |
| 79 size_t n; | |
| 80 | |
| 81 for (n = 0; n < len; n++) | |
| 82 crc = crc32_table[(crc ^ buf[n]) & 0xff] ^ (crc >> 8); | |
| 83 | |
| 84 return crc; | |
| 85 } | |
| 86 | |
| 87 uint32_t | |
| 88 crc32_no_xor (const char *buf, size_t len) | |
| 89 { | |
| 90 return crc32_update_no_xor (0L, buf, len); | |
| 91 } | |
| 92 | |
| 93 uint32_t | |
| 94 crc32_update (uint32_t crc, const char *buf, size_t len) | |
| 95 { | |
|
6783
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2006-05-10 Paul Eggert <eggert@cs.ucla.edu>
Simon Josefsson <simon@josefsson.org>
parents:
6407
diff
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96 return crc32_update_no_xor (crc ^ 0xffffffff, buf, len) ^ 0xffffffff; |
| 6357 | 97 } |
| 98 | |
| 99 uint32_t | |
| 100 crc32 (const char *buf, size_t len) | |
| 101 { | |
| 102 return crc32_update (0L, buf, len); | |
| 103 } |