annotate src/core/ngx_crc.h @ 36:a39d1b793287 NGINX_0_1_18

nginx 0.1.18 *) Workaround: the default values of the devpoll_events and the devpoll_changes directives changed from 512 to 32 to be compatible with Solaris 10. *) Bugfix: the proxy_set_x_var and fastcgi_set_var directives were not inherited. *) Bugfix: in the redirect rewrite directive the arguments were concatenated with URI by the "&" rather than the "?". *) Bugfix: the lines without trailing ";" in the file being included by the ngx_http_geo_module were silently ignored. *) Feature: the ngx_http_stub_status_module. *) Bugfix: the unknown log format in the access_log directive caused the segmentation fault. *) Feature: the new "document_root" parameter of the fastcgi_params directive. *) Feature: the fastcgi_redirect_errors directive. *) Feature: the new "break" modifier of the "rewrite" directive allows to stop the rewrite/location cycle and sets the current configuration to the request.
author Igor Sysoev <http://sysoev.ru>
date Wed, 09 Feb 2005 00:00:00 +0300
parents 74b1868dd3cd
children acd2ec3541cb
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_CRC_H_INCLUDED_
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8 #define _NGX_CRC_H_INCLUDED_
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11 /* 32-bit crc16 */
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13 static ngx_inline uint32_t ngx_crc(char *data, size_t len)
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14 {
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15 uint32_t sum;
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17 for (sum = 0; len; len--) {
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19 /*
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20 * gcc 2.95.2 x86 and icc 7.1.006 compile that operator
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21 * into the single "rol" opcode.
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22 * msvc 6.0sp2 compiles it into four opcodes.
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23 */
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24 sum = sum >> 1 | sum << 31;
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26 sum += *data++;
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27 }
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29 return sum;
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30 }
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33 #endif /* _NGX_CRC_H_INCLUDED_ */