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<?php |
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/* |
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* This file is part of the PHPASN1 library. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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namespace WP_DEFENDER_VENDOR\FG\Utility; |
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|
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/** |
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* Class BigIntegerGmp |
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* Integer representation of big numbers using the GMP extension to perform operations. |
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* @package WP_DEFENDER_VENDOR\FG\Utility |
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* @internal |
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*/ |
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class BigIntegerGmp extends BigInteger |
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{ |
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/** |
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* Resource handle. |
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* @var \GMP |
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*/ |
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protected $_rh; |
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|
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public function __clone() |
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{ |
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$this->_rh = gmp_add($this->_rh, 0); |
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} |
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|
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protected function _fromString($str) |
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{ |
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$this->_rh = gmp_init($str, 10); |
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} |
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|
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protected function _fromInteger($integer) |
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{ |
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$this->_rh = gmp_init($integer, 10); |
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} |
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|
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public function __toString() |
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{ |
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return gmp_strval($this->_rh, 10); |
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} |
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|
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public function toInteger() |
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{ |
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if ($this->compare(PHP_INT_MAX) > 0 || $this->compare(PHP_INT_MIN) < 0) { |
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throw new \OverflowException(sprintf('Can not represent %s as integer.', $this)); |
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} |
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return gmp_intval($this->_rh); |
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} |
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|
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public function isNegative() |
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{ |
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return gmp_sign($this->_rh) === -1; |
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} |
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|
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protected function _unwrap($number) |
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{ |
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if ($number instanceof self) { |
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return $number->_rh; |
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} |
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return $number; |
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} |
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|
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public function compare($number) |
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{ |
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return gmp_cmp($this->_rh, $this->_unwrap($number)); |
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} |
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|
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public function add($b) |
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{ |
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$ret = new self(); |
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$ret->_rh = gmp_add($this->_rh, $this->_unwrap($b)); |
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return $ret; |
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} |
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|
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public function subtract($b) |
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{ |
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$ret = new self(); |
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$ret->_rh = gmp_sub($this->_rh, $this->_unwrap($b)); |
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return $ret; |
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} |
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|
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public function multiply($b) |
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{ |
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$ret = new self(); |
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$ret->_rh = gmp_mul($this->_rh, $this->_unwrap($b)); |
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return $ret; |
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} |
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|
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public function modulus($b) |
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{ |
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$ret = new self(); |
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$ret->_rh = gmp_mod($this->_rh, $this->_unwrap($b)); |
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return $ret; |
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} |
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|
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public function toPower($b) |
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{ |
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if ($b instanceof self) { |
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// gmp_pow accepts just an integer |
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if ($b->compare(PHP_INT_MAX) > 0) { |
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throw new \UnexpectedValueException('Unable to raise to power greater than PHP_INT_MAX.'); |
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} |
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$b = gmp_intval($b->_rh); |
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} |
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$ret = new self(); |
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$ret->_rh = gmp_pow($this->_rh, $b); |
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return $ret; |
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} |
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|
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public function shiftRight($bits=8) |
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{ |
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$ret = new self(); |
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$ret->_rh = gmp_div($this->_rh, gmp_pow(2, $bits)); |
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return $ret; |
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} |
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|
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public function shiftLeft($bits=8) |
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{ |
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$ret = new self(); |
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$ret->_rh = gmp_mul($this->_rh, gmp_pow(2, $bits)); |
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return $ret; |
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} |
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|
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public function absoluteValue() |
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{ |
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$ret = new self(); |
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$ret->_rh = gmp_abs($this->_rh); |
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return $ret; |
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} |
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} |
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|
