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Diffstat (limited to '')
| -rw-r--r-- | library/vendor/Zend/Crypt/Math/BigInteger/Bcmath.php | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/library/vendor/Zend/Crypt/Math/BigInteger/Bcmath.php b/library/vendor/Zend/Crypt/Math/BigInteger/Bcmath.php new file mode 100644 index 0000000..2fb4a67 --- /dev/null +++ b/library/vendor/Zend/Crypt/Math/BigInteger/Bcmath.php @@ -0,0 +1,226 @@ +<?php +/** + * Zend Framework + * + * LICENSE + * + * This source file is subject to the new BSD license that is bundled + * with this package in the file LICENSE.txt. + * It is also available through the world-wide-web at this URL: + * http://framework.zend.com/license/new-bsd + * If you did not receive a copy of the license and are unable to + * obtain it through the world-wide-web, please send an email + * to license@zend.com so we can send you a copy immediately. + * + * @category Zend + * @package Zend_Crypt + * @subpackage Math + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + * @version $Id$ + */ + +/** + * @see Zend_Crypt_Math_BigInteger_Interface + */ + +/** + * Support for arbitrary precision mathematics in PHP. + * + * Zend_Crypt_Math_BigInteger_Bcmath is a wrapper across the PHP BCMath + * extension. + * + * @category Zend + * @package Zend_Crypt + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + */ +class Zend_Crypt_Math_BigInteger_Bcmath implements Zend_Crypt_Math_BigInteger_Interface +{ + + /** + * Initialise a big integer into an extension specific type. This is not + * applicable to BCMath. + * + * @param string $operand + * @param int $base + * @return string + */ + public function init($operand, $base = 10) + { + return $operand; + } + + /** + * Adds two arbitrary precision numbers + * + * @param string $left_operand + * @param string $right_operand + * @return string + */ + public function add($left_operand, $right_operand) + { + return bcadd($left_operand, $right_operand); + } + + /** + * Subtract one arbitrary precision number from another + * + * @param string $left_operand + * @param string $right_operand + * @return string + */ + public function subtract($left_operand, $right_operand) + { + return bcsub($left_operand, $right_operand); + } + + /** + * Compare two big integers and returns result as an integer where 0 means + * both are identical, 1 that left_operand is larger, or -1 that + * right_operand is larger. + * + * @param string $left_operand + * @param string $right_operand + * @return int + */ + public function compare($left_operand, $right_operand) + { + return bccomp($left_operand, $right_operand); + } + + /** + * Divide two big integers and return result or NULL if the denominator + * is zero. + * + * @param string $left_operand + * @param string $right_operand + * @return string|null + */ + public function divide($left_operand, $right_operand) + { + return bcdiv($left_operand, $right_operand); + } + + /** + * Get modulus of an arbitrary precision number + * + * @param string $left_operand + * @param string $modulus + * @return string + */ + public function modulus($left_operand, $modulus) + { + return bcmod($left_operand, $modulus); + } + + /** + * Multiply two arbitrary precision numbers + * + * @param string $left_operand + * @param string $right_operand + * @return string + */ + public function multiply($left_operand, $right_operand) + { + return bcmul($left_operand, $right_operand); + } + + /** + * Raise an arbitrary precision number to another + * + * @param string $left_operand + * @param string $right_operand + * @return string + */ + public function pow($left_operand, $right_operand) + { + return bcpow($left_operand, $right_operand); + } + + /** + * Raise an arbitrary precision number to another, reduced by a specified + * modulus + * + * @param string $left_operand + * @param string $right_operand + * @param string $modulus + * @return string + */ + public function powmod($left_operand, $right_operand, $modulus) + { + return bcpowmod($left_operand, $right_operand, $modulus); + } + + /** + * Get the square root of an arbitrary precision number + * + * @param string $operand + * @return string + */ + public function sqrt($operand) + { + return bcsqrt($operand); + } + + /** + * @param string $operand + * @return string + */ + public function binaryToInteger($operand) + { + $result = '0'; + while (strlen($operand)) { + $ord = ord(substr($operand, 0, 1)); + $result = bcadd(bcmul($result, 256), $ord); + $operand = substr($operand, 1); + } + return $result; + } + + /** + * @param string $operand + * @return string + */ + public function integerToBinary($operand) + { + $cmp = bccomp($operand, 0); + $return = ''; + if ($cmp == 0) { + return "\0"; + } + while (bccomp($operand, 0) > 0) { + $return = chr(bcmod($operand, 256)) . $return; + $operand = bcdiv($operand, 256); + } + if (ord($return[0]) > 127) { + $return = "\0" . $return; + } + return $return; + } + + /**public function integerToBinary($operand) + { + $return = ''; + while(bccomp($operand, '0')) { + $return .= chr(bcmod($operand, '256')); + $operand = bcdiv($operand, '256'); + } + return $return; + }**/ // Prior version for referenced offset + + /** + * @param string $operand + * @return string + */ + public function hexToDecimal($operand) + { + $return = '0'; + while(strlen($hex)) { + $hex = hexdec(substr($operand, 0, 4)); + $dec = bcadd(bcmul($return, 65536), $hex); + $operand = substr($operand, 4); + } + return $return; + } +} |