Mercurial > hg > nginx
view src/core/ngx_crc.h @ 539:371c1cee100d release-0.1.44
nginx-0.1.44-RELEASE import
*) Feature: the IMAP/POP3 proxy supports SSL.
*) Feature: the "proxy_timeout" directive of the ngx_imap_proxy_module.
*) Feature: the "userid_mark" directive.
*) Feature: the $remote_user variable value is determined independently
of authorization use.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Tue, 06 Sep 2005 16:09:32 +0000 |
parents | bbd6b0b4a2b1 |
children | 5622cdd48e5b |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_CRC_H_INCLUDED_ #define _NGX_CRC_H_INCLUDED_ /* 32-bit crc16 */ static ngx_inline uint32_t ngx_crc(char *data, size_t len) { uint32_t sum; for (sum = 0; len; len--) { /* * gcc 2.95.2 x86 and icc 7.1.006 compile that operator * into the single "rol" opcode. * msvc 6.0sp2 compiles it into four opcodes. */ sum = sum >> 1 | sum << 31; sum += *data++; } return sum; } #endif /* _NGX_CRC_H_INCLUDED_ */