Mercurial > hg > octave-kai > gnulib-hg
annotate lib/crc.h @ 11583:dc80f2cc1327
Second attempt to work around an AIX 5.3, 6.1 compiler bug with include_next.
| author | Eric Blake <ebb9@byu.net> |
|---|---|
| date | Thu, 21 May 2009 16:48:12 +0200 |
| parents | bbbbbf4cd1c5 |
| children | b5e42ef33b49 |
| rev | line source |
|---|---|
| 6357 | 1 /* crc.h -- cyclic redundancy checks |
| 2 Copyright (C) 2005 Free Software Foundation, Inc. | |
| 3 | |
|
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Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
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diff
changeset
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4 This program is free software: you can redistribute it and/or modify |
| 6357 | 5 it under the terms of the GNU General Public License as published by |
|
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Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
6421
diff
changeset
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6 the Free Software Foundation; either version 3 of the License, or |
|
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
6421
diff
changeset
|
7 (at your option) any later version. |
| 6357 | 8 |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 GNU General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License | |
|
9309
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Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
6421
diff
changeset
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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 | |
| 19 #ifndef CRC_H | |
| 20 # define CRC_H 1 | |
| 21 | |
|
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* crc.h: Include stddef.h, for size_t.
Simon Josefsson <simon@josefsson.org>
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22 #include <stddef.h> |
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* crc.h: Include stdint.h directly, suggested by Bruno Haible
Simon Josefsson <simon@josefsson.org>
parents:
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changeset
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23 #include <stdint.h> |
| 6357 | 24 |
| 25 /* Compute CRC-32 value of LEN bytes long BUF, and return it. */ | |
| 26 extern uint32_t crc32 (const char *buf, size_t len); | |
| 27 | |
| 28 /* Incrementally update CRC-32 value CRC using LEN bytes long BUF. In | |
| 29 the first call, use 0 as the value for CRC. Return the updated | |
| 30 CRC-32 value. */ | |
| 31 extern uint32_t crc32_update (uint32_t crc, const char *buf, size_t len); | |
| 32 | |
| 33 /* Compute modified-CRC-32 value of LEN bytes long BUF, and return it. | |
| 34 The "modification" is to avoid the initial and final XOR operation. | |
| 35 Due to historic implementation errors, this variant is sometimes | |
| 36 used (i.e., in RFC 3961). */ | |
| 37 extern uint32_t crc32_no_xor (const char *buf, size_t len); | |
| 38 | |
| 39 /* Incrementally update modified-CRC-32 value CRC using LEN bytes long | |
| 40 BUF. In the first call, use 0 as the value for CRC. Return the | |
| 41 updated modified-CRC-32 value. The "modification" is to avoid the | |
| 42 initial and final XOR operation. Due to historic implementation | |
| 43 errors, this variant is sometimes used (i.e., in RFC 3961). */ | |
| 44 extern uint32_t | |
| 45 crc32_update_no_xor (uint32_t crc, const char *buf, size_t len); | |
| 46 | |
| 47 #endif /* CRC_H */ |