| 1,76 → 1,76 |
|---|
| <?php |
| // +----------------------------------------------------------------------+ |
| // | PHP Version 4 | |
| // +----------------------------------------------------------------------+ |
| // | Copyright (c) 1997-2004 The PHP Group | |
| // +----------------------------------------------------------------------+ |
| // | This source file is subject to version 3.0 of the PHP license, | |
| // | that is bundled with this package in the file LICENSE, and is | |
| // | available at through the world-wide-web at | |
| // | http://www.php.net/license/3_0.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. | |
| // +----------------------------------------------------------------------+ |
| // | Authors: Aidan Lister <aidan@php.net> | |
| // +----------------------------------------------------------------------+ |
| // |
| // $Id: bcinvert.php,v 1.2 2005/11/22 20:24:45 aidan Exp $ |
| |
| |
| /** |
| * Replace bcinvert() |
| * |
| * @category PHP |
| * @package PHP_Compat |
| * @link http://php.net/function.bcinvert |
| * @author Sara Golemon <pollita@php.net> |
| * @version $Revision: 1.2 $ |
| * @since PHP 5.2.0 |
| * @require PHP 4.0.4 (call_user_func_array) |
| */ |
| if (!function_exists('bcinvert')) { |
| function bcinvert($a, $n) |
| { |
| // Sanity check |
| if (!is_scalar($a)) { |
| user_error('bcinvert() expects parameter 1 to be string, ' . |
| gettype($a) . ' given', E_USER_WARNING); |
| return false; |
| } |
| |
| if (!is_scalar($n)) { |
| user_error('bcinvert() expects parameter 2 to be string, ' . |
| gettype($n) . ' given', E_USER_WARNING); |
| return false; |
| } |
| |
| $u1 = $v2 = '1'; |
| $u2 = $v1 = '0'; |
| $u3 = $n; |
| $v3 = $a; |
| |
| while (bccomp($v3, '0')) { |
| $q0 = bcdiv($u3, $v3); |
| $t1 = bcsub($u1, bcmul($q0, $v1)); |
| $t2 = bcsub($u2, bcmul($q0, $v2)); |
| $t3 = bcsub($u3, bcmul($q0, $v3)); |
| |
| $u1 = $v1; |
| $u2 = $v2; |
| $u3 = $v3; |
| |
| $v1 = $t1; |
| $v2 = $t2; |
| $v3 = $t3; |
| } |
| |
| if (bccomp($u2, '0') < 0) { |
| return bcadd($u2, $n); |
| } else { |
| return bcmod($u2, $n); |
| } |
| } |
| } |
| |
| <?php |
| // +----------------------------------------------------------------------+ |
| // | PHP Version 4 | |
| // +----------------------------------------------------------------------+ |
| // | Copyright (c) 1997-2004 The PHP Group | |
| // +----------------------------------------------------------------------+ |
| // | This source file is subject to version 3.0 of the PHP license, | |
| // | that is bundled with this package in the file LICENSE, and is | |
| // | available at through the world-wide-web at | |
| // | http://www.php.net/license/3_0.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. | |
| // +----------------------------------------------------------------------+ |
| // | Authors: Aidan Lister <aidan@php.net> | |
| // +----------------------------------------------------------------------+ |
| // |
| // $Id: bcinvert.php,v 1.2 2005/11/22 20:24:45 aidan Exp $ |
| |
| |
| /** |
| * Replace bcinvert() |
| * |
| * @category PHP |
| * @package PHP_Compat |
| * @link http://php.net/function.bcinvert |
| * @author Sara Golemon <pollita@php.net> |
| * @version $Revision: 1.2 $ |
| * @since PHP 5.2.0 |
| * @require PHP 4.0.4 (call_user_func_array) |
| */ |
| if (!function_exists('bcinvert')) { |
| function bcinvert($a, $n) |
| { |
| // Sanity check |
| if (!is_scalar($a)) { |
| user_error('bcinvert() expects parameter 1 to be string, ' . |
| gettype($a) . ' given', E_USER_WARNING); |
| return false; |
| } |
| |
| if (!is_scalar($n)) { |
| user_error('bcinvert() expects parameter 2 to be string, ' . |
| gettype($n) . ' given', E_USER_WARNING); |
| return false; |
| } |
| |
| $u1 = $v2 = '1'; |
| $u2 = $v1 = '0'; |
| $u3 = $n; |
| $v3 = $a; |
| |
| while (bccomp($v3, '0')) { |
| $q0 = bcdiv($u3, $v3); |
| $t1 = bcsub($u1, bcmul($q0, $v1)); |
| $t2 = bcsub($u2, bcmul($q0, $v2)); |
| $t3 = bcsub($u3, bcmul($q0, $v3)); |
| |
| $u1 = $v1; |
| $u2 = $v2; |
| $u3 = $v3; |
| |
| $v1 = $t1; |
| $v2 = $t2; |
| $v3 = $t3; |
| } |
| |
| if (bccomp($u2, '0') < 0) { |
| return bcadd($u2, $n); |
| } else { |
| return bcmod($u2, $n); |
| } |
| } |
| } |
| |
| ?> |