nginx 0.7.11 *) Change: now ngx_http_charset_module does not work by default with text/css MIME type. *) Feature: now nginx returns the 405 status code for POST method requesting a static file only if the file exists. *) Feature: the "proxy_ssl_session_reuse" directive. *) Bugfix: a "proxy_pass" directive without URI part might use original request after the "X-Accel-Redirect" redirection was used; *) Bugfix: if a directory has search only rights and the first index file was absent, then nginx returned the 500 status code. *) Bugfix: in inclusive locations; the bugs had appeared in 0.7.1.

/*
 * Copyright (C) Igor Sysoev
 */


#ifndef _NGX_CRC_H_INCLUDED_
#define _NGX_CRC_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


/* 32-bit crc16 */

static ngx_inline uint32_t
ngx_crc(u_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_ */