Mercurial > hg > nginx-vendor-0-7
annotate src/core/ngx_crc.h @ 46:9f3205d496a0 NGINX_0_1_23
nginx 0.1.23
*) Feature: the ngx_http_ssi_filter_module and the ssi,
ssi_silent_errors, and ssi_min_file_chunk directives. The 'echo
var="HTTP_..." default=""' and 'echo var="REMOTE_ADDR"' commands are
supported.
*) Feature: the %request_time log parameter.
*) Feature: if the request has no the "Host" header line, then the
"proxy_preserve_host" directive set this header line to the first
server name of the "server_name" directive.
*) Bugfix: nginx could not be built on platforms different from i386,
amd64, sparc É ppc; bug appeared in 0.1.22.
*) Bugfix: the ngx_http_autoindex_module now shows the information not
about the symlink, but about file or directory it points to.
*) Bugfix: the %apache_length parameter logged the negative length of
the response header if the no response was transferred to a client.
| author | Igor Sysoev <http://sysoev.ru> |
|---|---|
| date | Tue, 01 Mar 2005 00:00:00 +0300 |
| 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_ */ |