text: /*
     +----------------------------------------------------------------------+
     | PHP Version 5                                                        |
     +----------------------------------------------------------------------+
     | Copyright (c) 1997-2008 The PHP Group                                |
     +----------------------------------------------------------------------+
     | This source file is subject to version 3.01 of the PHP license,      |
     | that is bundled with this package in the file LICENSE, and is        |
     | available through the world-wide-web at the following url:           |
     | http://www.php.net/license/3_01.txt                                  |
     | If you did not receive a copy of the PHP license and are unable to   |
     | obtain it through the world-wide-web, please send a note to          |
     | license@php.net so we can mail you a copy immediately.               |
     +----------------------------------------------------------------------+
     | Author: Rasmus Lerdorf <rasmus@php.net>                              |
     +----------------------------------------------------------------------+
  */
  
  /* $Id: crc32.c,v 1.16.2.4.2.2 2007/12/31 07:20:12 sebastian Exp $ */
  
  #include "php.h"
  #include "basic_functions.h"
  #include "crc32.h"
  
  /* {{{ proto string crc32(string str)
     Calculate the crc32 polynomial of a string */
  PHP_NAMED_FUNCTION(php_if_crc32)
  {
  	char *p;
  	int len, nr;
  	php_uint32 crcinit = 0;
  	register php_uint32 crc;
  
  	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &p, &nr) == FAILURE) {
  		return;
  	}
  	crc = crcinit^0xFFFFFFFF;
  
  	for (len =+nr; nr--; ++p) {
  		crc = ((crc >> 8) & 0x00FFFFFF) ^ crc32tab[(crc ^ (*p)) & 0xFF ];
  	}
  	RETVAL_LONG(crc^0xFFFFFFFF);
  }
  /* }}} */
  
  /*
   * Local variables:
   * tab-width: 4
   * c-basic-offset: 4
   * End:
   * vim600: sw=4 ts=4 fdm=marker
   * vim<600: sw=4 ts=4
   */
  