| 0,0 → 1,60 |
|---|
| /* |
| Copyright (c) 1990-2008 Info-ZIP. All rights reserved. |
| |
| See the accompanying file LICENSE, version 2000-Apr-09 or later |
| (the contents of which are also included in zip.h) for terms of use. |
| If, for some reason, all these files are missing, the Info-ZIP license |
| also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html |
| */ |
| /* crc32.h -- compute the CRC-32 of a data stream |
| * Copyright (C) 1995 Mark Adler |
| * For conditions of distribution and use, see copyright notice in zlib.h |
| */ |
| |
| #ifndef __crc32_h |
| #define __crc32_h /* identifies this source module */ |
| |
| /* This header should be read AFTER zip.h resp. unzip.h |
| * (the latter with UNZIP_INTERNAL defined...). |
| */ |
| |
| #ifndef OF |
| # define OF(a) a |
| #endif |
| #ifndef ZCONST |
| # define ZCONST const |
| #endif |
| |
| #ifdef DYNALLOC_CRCTAB |
| void free_crc_table OF((void)); |
| #endif |
| #ifndef USE_ZLIB |
| ZCONST ulg near *get_crc_table OF((void)); |
| #endif |
| #if (defined(USE_ZLIB) || defined(CRC_TABLE_ONLY)) |
| # ifdef IZ_CRC_BE_OPTIMIZ |
| # undef IZ_CRC_BE_OPTIMIZ |
| # endif |
| #else /* !(USE_ZLIB || CRC_TABLE_ONLY) */ |
| ulg crc32 OF((ulg crc, ZCONST uch *buf, extent len)); |
| #endif /* ?(USE_ZLIB || CRC_TABLE_ONLY) */ |
| |
| #ifndef CRC_32_TAB |
| # define CRC_32_TAB crc_32_tab |
| #endif |
| |
| #ifdef CRC32 |
| # undef CRC32 |
| #endif |
| #ifdef IZ_CRC_BE_OPTIMIZ |
| # define CRC32UPD(c, crctab) (crctab[((c) >> 24)] ^ ((c) << 8)) |
| # define CRC32(c, b, crctab) (crctab[(((int)(c) >> 24) ^ (b))] ^ ((c) << 8)) |
| # define REV_BE(w) (((w)>>24)+(((w)>>8)&0xff00)+ \ |
| (((w)&0xff00)<<8)+(((w)&0xff)<<24)) |
| #else |
| # define CRC32UPD(c, crctab) (crctab[((int)(c)) & 0xff] ^ ((c) >> 8)) |
| # define CRC32(c, b, crctab) (crctab[((int)(c) ^ (b)) & 0xff] ^ ((c) >> 8)) |
| # define REV_BE(w) w |
| #endif |
| |
| #endif /* !__crc32_h */ |