nginx 0.3.53 *) Change: the "add_header" directive adds the string to 204, 301, and 302 responses. *) Feature: the "server" directive in the "upstream" context supports the "weight" parameter. *) Feature: the "server_name" directive supports the "*" wildcard. *) Feature: nginx supports the request body size more than 2G. *) Bugfix: if a client was successfully authorized using "satisfy_any on", then anyway the message "access forbidden by rule" was written in the log. *) Bugfix: the "PUT" method may erroneously not create a file and return the 409 code. *) Bugfix: if the IMAP/POP3 backend returned an error, then nginx continued proxying anyway.

/*
 * 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_ */