Mercurial > hg > nginx-vendor-current
annotate src/core/ngx_crc.h @ 558:2da4537168f8 NGINX_0_8_31
nginx 0.8.31
*) Feature: now the "error_page" directive may redirect the 301 and 302
responses.
*) Feature: the $geoip_city_continent_code, $geoip_latitude, and
$geoip_longitude variables.
Thanks to Arvind Sundararajan.
*) Feature: now the ngx_http_image_filter_module deletes always EXIF
and other application specific data if the data consume more than 5%
of a JPEG file.
*) Bugfix: nginx closed a connection if a cached response had an empty
body.
Thanks to Piotr Sikora.
*) Bugfix: nginx might not be built by gcc 4.x if the -O2 or higher
optimization option was used.
Thanks to Maxim Dounin and Denis F. Latypoff.
*) Bugfix: regular expressions in location were always tested in
case-sensitive mode; the bug had appeared in 0.8.25.
*) Bugfix: nginx cached a 304 response if there was the "If-None-Match"
header line in a proxied request.
Thanks to Tim Dettrick and David Kostal.
*) Bugfix: nginx/Windows tried to delete a temporary file twice if the
file should replace an already existent file.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Wed, 23 Dec 2009 00:00:00 +0300 |
parents | fbf2b2f66c9f |
children | d0f7a625f27c |
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_ */ |