Mercurial > hg > nginx-vendor-1-0
annotate src/core/ngx_crc.h @ 508:4b0d7f0bf22b NGINX_0_8_6
nginx 0.8.6
*) Feature: the ngx_http_geoip_module.
*) Bugfix: XSLT filter may fail with message "not well formed XML
document" for valid XML document.
Thanks to Kuramoto Eiji.
*) Bugfix: now in MacOSX, Cygwin, and nginx/Windows locations given by
a regular expression are always tested in case insensitive mode;
*) Bugfix: now nginx/Windows ignores trailing dots in URI.
Thanks to Hugo Leisink.
*) Bugfix: name of file specified in --conf-path was not honored during
installation; the bug had appeared in 0.6.6.
Thanks to Maxim Dounin.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 20 Jul 2009 00:00:00 +0400 |
parents | fbf2b2f66c9f |
children | ad25218fd14b |
rev | line source |
---|---|
0 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #ifndef _NGX_CRC_H_INCLUDED_ | |
8 #define _NGX_CRC_H_INCLUDED_ | |
9 | |
10 | |
250 | 11 #include <ngx_config.h> |
12 #include <ngx_core.h> | |
13 | |
14 | |
0 | 15 /* 32-bit crc16 */ |
16 | |
248 | 17 static ngx_inline uint32_t |
250 | 18 ngx_crc(u_char *data, size_t len) |
0 | 19 { |
20 uint32_t sum; | |
21 | |
22 for (sum = 0; len; len--) { | |
23 | |
24 /* | |
248 | 25 * gcc 2.95.2 x86 and icc 7.1.006 compile |
26 * that operator into the single "rol" opcode, | |
0 | 27 * msvc 6.0sp2 compiles it into four opcodes. |
28 */ | |
29 sum = sum >> 1 | sum << 31; | |
30 | |
31 sum += *data++; | |
32 } | |
33 | |
34 return sum; | |
35 } | |
36 | |
37 | |
38 #endif /* _NGX_CRC_H_INCLUDED_ */ |