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| author | Repo Admin <[email protected]> | 2002-10-19 07:55:27 +0000 |
|---|---|---|
| committer | Repo Admin <[email protected]> | 2002-10-19 07:55:27 +0000 |
| commit | 82a17c9fb3d64ccdd474c3bedf564368f77e84a4 (patch) | |
| tree | 0c01ee8cea5f6f77e830955c6b97024752740a2b /zlib/adler32.c | |
| parent | Bumped version number for cvs version (diff) | |
| download | gnupg-82a17c9fb3d64ccdd474c3bedf564368f77e84a4.tar.gz gnupg-82a17c9fb3d64ccdd474c3bedf564368f77e84a4.zip | |
This commit was manufactured by cvs2svn to create branch
'GNUPG-1-9-BRANCH'.
Diffstat (limited to 'zlib/adler32.c')
| -rw-r--r-- | zlib/adler32.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/zlib/adler32.c b/zlib/adler32.c deleted file mode 100644 index fae88b655..000000000 --- a/zlib/adler32.c +++ /dev/null @@ -1,48 +0,0 @@ -/* adler32.c -- compute the Adler-32 checksum of a data stream - * Copyright (C) 1995-2002 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#include "zlib.h" - -#define BASE 65521L /* largest prime smaller than 65536 */ -#define NMAX 5552 -/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */ - -#define DO1(buf,i) {s1 += buf[i]; s2 += s1;} -#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1); -#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2); -#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4); -#define DO16(buf) DO8(buf,0); DO8(buf,8); - -/* ========================================================================= */ -uLong ZEXPORT adler32(adler, buf, len) - uLong adler; - const Bytef *buf; - uInt len; -{ - unsigned long s1 = adler & 0xffff; - unsigned long s2 = (adler >> 16) & 0xffff; - int k; - - if (buf == Z_NULL) return 1L; - - while (len > 0) { - k = len < NMAX ? len : NMAX; - len -= k; - while (k >= 16) { - DO16(buf); - buf += 16; - k -= 16; - } - if (k != 0) do { - s1 += *buf++; - s2 += s1; - } while (--k); - s1 %= BASE; - s2 %= BASE; - } - return (s2 << 16) | s1; -} |
