nginx 0.1.35 *) Feature: the "working_directory" directive. *) Feature: the "port_in_redirect" directive. *) Bugfix: the segmentation fault was occurred if the backend response header was in several packets; bug appeared in 0.1.29. *) Bugfix: if more than 10 servers were configured or some server did not use the "listen" directive, then the segmentation fault was occurred on the start. *) Bugfix: the segmentation fault might occur if the response was bigger than the temporary file. *) Bugfix: nginx returned the 400 response on requests like "GET http://www.domain.com/uri HTTP/1.0"; bug appeared in 0.1.28.

/*
 * 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_ */