diff options
| author | Friendika <info@friendika.com> | 2011-06-28 21:11:52 -0700 |
|---|---|---|
| committer | Friendika <info@friendika.com> | 2011-06-28 21:11:52 -0700 |
| commit | 0b221e8945ae785dc706d8ea9a9e8e25532c0096 (patch) | |
| tree | 52d4978006b028c24ee1feb3cf6ba2907a48c88f /library/phpsec/PHP/Compat/Function/bcpowmod.php | |
| parent | 60caa0349416dad1a3a891e3c0e00d33d25d7a91 (diff) | |
| download | volse-hubzilla-0b221e8945ae785dc706d8ea9a9e8e25532c0096.tar.gz volse-hubzilla-0b221e8945ae785dc706d8ea9a9e8e25532c0096.tar.bz2 volse-hubzilla-0b221e8945ae785dc706d8ea9a9e8e25532c0096.zip | |
bug #96 move libraries to library - better alignment of like rotator
Diffstat (limited to 'library/phpsec/PHP/Compat/Function/bcpowmod.php')
| -rw-r--r-- | library/phpsec/PHP/Compat/Function/bcpowmod.php | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/library/phpsec/PHP/Compat/Function/bcpowmod.php b/library/phpsec/PHP/Compat/Function/bcpowmod.php new file mode 100644 index 000000000..6ec1b1840 --- /dev/null +++ b/library/phpsec/PHP/Compat/Function/bcpowmod.php @@ -0,0 +1,67 @@ +<?php
+// $Id: bcpowmod.php,v 1.1 2007/07/02 04:19:55 terrafrost Exp $
+
+
+/**
+ * Replace bcpowmod()
+ *
+ * @category PHP
+ * @package PHP_Compat
+ * @license LGPL - http://www.gnu.org/licenses/lgpl.html
+ * @copyright 2004-2007 Aidan Lister <aidan@php.net>, Arpad Ray <arpad@php.net>
+ * @link http://php.net/function.bcpowmod
+ * @author Sara Golemon <pollita@php.net>
+ * @version $Revision: 1.1 $
+ * @since PHP 5.0.0
+ * @require PHP 4.0.0 (user_error)
+ */
+function php_compat_bcpowmod($x, $y, $modulus, $scale = 0)
+{
+ // Sanity check
+ if (!is_scalar($x)) {
+ user_error('bcpowmod() expects parameter 1 to be string, ' .
+ gettype($x) . ' given', E_USER_WARNING);
+ return false;
+ }
+
+ if (!is_scalar($y)) {
+ user_error('bcpowmod() expects parameter 2 to be string, ' .
+ gettype($y) . ' given', E_USER_WARNING);
+ return false;
+ }
+
+ if (!is_scalar($modulus)) {
+ user_error('bcpowmod() expects parameter 3 to be string, ' .
+ gettype($modulus) . ' given', E_USER_WARNING);
+ return false;
+ }
+
+ if (!is_scalar($scale)) {
+ user_error('bcpowmod() expects parameter 4 to be integer, ' .
+ gettype($scale) . ' given', E_USER_WARNING);
+ return false;
+ }
+
+ $t = '1';
+ while (bccomp($y, '0')) {
+ if (bccomp(bcmod($y, '2'), '0')) {
+ $t = bcmod(bcmul($t, $x), $modulus);
+ $y = bcsub($y, '1');
+ }
+
+ $x = bcmod(bcmul($x, $x), $modulus);
+ $y = bcdiv($y, '2');
+ }
+
+ return $t;
+}
+
+
+// Define
+if (!function_exists('bcpowmod')) {
+ function bcpowmod($x, $y, $modulus, $scale = 0)
+ {
+ return php_compat_bcpowmod($x, $y, $modulus, $scale);
+ }
+}
+?>
\ No newline at end of file |