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1.1 root 1: /* crc32.h */
2:
3: /* 32-bit CRC table and calculation macro */
4:
1.1.1.2 ! root 5: /* $Id: crc32.h,v 1.15 2008/06/04 04:39:44 deuce Exp $ */
1.1 root 6:
7: /****************************************************************************
8: * @format.tab-size 4 (Plain Text/Source Code File Header) *
9: * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
10: * *
11: * Copyright 2003 Rob Swindell - http://www.synchro.net/copyright.html *
12: * *
13: * This program is free software; you can redistribute it and/or *
14: * modify it under the terms of the GNU General Public License *
15: * as published by the Free Software Foundation; either version 2 *
16: * of the License, or (at your option) any later version. *
17: * See the GNU General Public License for more details: gpl.txt or *
18: * http://www.fsf.org/copyleft/gpl.html *
19: * *
20: * Anonymous FTP access to the most recent released source is available at *
21: * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
22: * *
23: * Anonymous CVS access to the development source and modification history *
24: * is available at cvs.synchro.net:/cvsroot/sbbs, example: *
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26: * (just hit return, no password is necessary) *
27: * cvs -d :pserver:[email protected]:/cvsroot/sbbs checkout src *
28: * *
29: * For Synchronet coding style and modification guidelines, see *
30: * http://www.synchro.net/source.html *
31: * *
32: * You are encouraged to submit any modifications (preferably in Unix diff *
33: * format) via e-mail to [email protected] *
34: * *
35: * Note: If this box doesn't appear square, then you need to fix your tabs. *
36: ****************************************************************************/
37:
38: #ifndef _CRC32_H_
39: #define _CRC32_H_
40:
41: #include <stdio.h> /* FILE */
1.1.1.2 ! root 42: #include "gen_defs.h" /* uint32_t */
1.1 root 43:
44: #ifdef __cplusplus
45: extern "C" {
46: #endif
47:
1.1.1.2 ! root 48: extern int32_t crc32tbl[];
1.1 root 49:
1.1.1.2 ! root 50: uint32_t crc32i(uint32_t crc, const char* buf, unsigned long len);
! 51: uint32_t fcrc32(FILE* fp, unsigned long len);
1.1 root 52:
53: #ifdef __cplusplus
54: }
55: #endif
56:
57: #define ucrc32(ch,crc) (crc32tbl[(crc^(ch))&0xff]^(crc>>8))
1.1.1.2 ! root 58: #define crc32(x,y) crc32i(0xffffffff,x,y)
1.1 root 59:
60: #endif /* Don't add anything after this line */
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