update

modules/pshowsso/vendor/ircmaxell/security-lib/lib/SecurityLib/BigMath.php

@@ -0,0 +1,64 @@
+<?php
+
+/**
+ * A class for arbitrary precision math functions
+ *
+ * PHP version 5.3
+ *
+ * @category   PHPPasswordLib
+ * @package    Core
+ * @author     Anthony Ferrara <ircmaxell@ircmaxell.com>
+ * @copyright  2011 The Authors
+ * @license    http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @version    Build @@version@@
+ */
+namespace SecurityLib;
+
+/**
+ * A class for arbitrary precision math functions
+ *
+ * @category   PHPPasswordLib
+ * @package    Core
+ * @author     Anthony Ferrara <ircmaxell@ircmaxell.com>
+ */
+abstract class BigMath
+{
+    /**
+     * Get an instance of the big math class
+     *
+     * This is NOT a singleton.  It simply loads the proper strategy
+     * given the current server configuration
+     *
+     * @return \PasswordLib\Core\BigMath A big math instance
+     */
+    public static function createFromServerConfiguration()
+    {
+        //@codeCoverageIgnoreStart
+        if (extension_loaded('gmp')) {
+            return new \SecurityLib\BigMath\GMP();
+        } elseif (extension_loaded('bcmath')) {
+            return new \SecurityLib\BigMath\BCMath();
+        } else {
+            return new \SecurityLib\BigMath\PHPMath();
+        }
+        //@codeCoverageIgnoreEnd
+    }
+    /**
+     * Add two numbers together
+     *
+     * @param string $left  The left argument
+     * @param string $right The right argument
+     *
+     * @return A base-10 string of the sum of the two arguments
+     */
+    abstract public function add($left, $right);
+    /**
+     * Subtract two numbers
+     *
+     * @param string $left  The left argument
+     * @param string $right The right argument
+     *
+     * @return A base-10 string of the difference of the two arguments
+     */
+    abstract public function subtract($left, $right);
+}