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Diffstat (limited to 'Build/source/extra/unzip/crc32.c')
-rw-r--r-- | Build/source/extra/unzip/crc32.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/Build/source/extra/unzip/crc32.c b/Build/source/extra/unzip/crc32.c deleted file mode 100644 index ff2daa0c088..00000000000 --- a/Build/source/extra/unzip/crc32.c +++ /dev/null @@ -1,56 +0,0 @@ -/* crc32.c -- 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 - */ - -/* $Id: crc32.c,v 1.1 1999/02/01 04:22:50 mik Exp $ */ - -#define __CRC32_C /* identifies this source module */ - -#include "zip.h" - -#ifndef USE_ZLIB -#ifndef ASM_CRC - -#ifndef ZCONST -# define ZCONST const -#endif - -#ifdef CRC32 -# undef CRC32 -#endif -#define CRC32(c, b) (crc_table[((int)(c) ^ (b)) & 0xff] ^ ((c) >> 8)) -#define DO1(buf) crc = CRC32(crc, *buf++) -#define DO2(buf) DO1(buf); DO1(buf) -#define DO4(buf) DO2(buf); DO2(buf) -#define DO8(buf) DO4(buf); DO4(buf) - -/* ========================================================================= */ -ulg crc32(crc, buf, len) - register ulg crc; /* crc shift register */ - register ZCONST uch *buf; /* pointer to bytes to pump through */ - extent len; /* number of bytes in buf[] */ -/* Run a set of bytes through the crc shift register. If buf is a NULL - pointer, then initialize the crc shift register contents instead. - Return the current crc in either case. */ -{ - register ZCONST ulg near *crc_table; - - if (buf == NULL) return 0L; - - crc_table = get_crc_table(); - - crc = crc ^ 0xffffffffL; -#ifndef NO_UNROLLED_LOOPS - while (len >= 8) { - DO8(buf); - len -= 8; - } -#endif - if (len) do { - DO1(buf); - } while (--len); - return crc ^ 0xffffffffL; /* (instead of ~c for 64-bit machines) */ -} -#endif /* !ASM_CRC */ -#endif /* !USE_ZLIB */ |