2021-06-09 23:59:39 +00:00
|
|
|
#ifndef __crc32_h
|
2021-09-28 05:58:51 +00:00
|
|
|
#define __crc32_h
|
|
|
|
|
#include "third_party/infozip/zip/zip.h"
|
|
|
|
|
/* clang-format off */
|
2021-06-09 23:59:39 +00:00
|
|
|
|
|
|
|
|
#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 */
|
