mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-04 14:21:55 +03:00
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/*
|
|
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 */
|