Mercurial > hg > nginx-vendor-0-5
annotate src/core/ngx_crc.h @ 190:3689cd4e3228 NGINX_0_3_42
nginx 0.3.42
*) Feature: the "bind" option of the "listen" directive in IMAP/POP3
proxy.
*) Bugfix: if the same capture in the "rewrite" directive was used more
then once.
*) Bugfix: the $sent_http_content_type, $sent_http_content_length,
$sent_http_last_modified, $sent_http_connection,
$sent_http_keep_alive, and $sent_http_transfer_encoding variables
were not written to access log.
*) Bugfix: the $sent_http_cache_control returned value of the single
"Cache-Control" response header line.
| author | Igor Sysoev <http://sysoev.ru> |
|---|---|
| date | Wed, 26 Apr 2006 00:00:00 +0400 |
| parents | 74b1868dd3cd |
| children | acd2ec3541cb |
| 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 | |
| 11 /* 32-bit crc16 */ | |
| 12 | |
| 16 | 13 static ngx_inline uint32_t ngx_crc(char *data, size_t len) |
| 0 | 14 { |
| 15 uint32_t sum; | |
| 16 | |
| 17 for (sum = 0; len; len--) { | |
| 18 | |
| 19 /* | |
| 20 * gcc 2.95.2 x86 and icc 7.1.006 compile that operator | |
| 21 * into the single "rol" opcode. | |
| 22 * msvc 6.0sp2 compiles it into four opcodes. | |
| 23 */ | |
| 24 sum = sum >> 1 | sum << 31; | |
| 25 | |
| 26 sum += *data++; | |
| 27 } | |
| 28 | |
| 29 return sum; | |
| 30 } | |
| 31 | |
| 32 | |
| 33 #endif /* _NGX_CRC_H_INCLUDED_ */ |