Developer
<?php
/**
* Pure-PHP 64-bit BigInteger Engine
*
* PHP version 5 and 7
*
* @author Jim Wigginton <terrafrost@php.net>
* @copyright 2017 Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://pear.php.net/package/Math_BigInteger
*/
namespace phpseclib3\Math\BigInteger\Engines;
/**
* Pure-PHP 64-bit Engine.
*
* Uses 64-bit integers if int size is 8 bits
*
* @author Jim Wigginton <terrafrost@php.net>
*/
class PHP64 extends PHP
{
// Constants used by PHP.php
const BASE = 31;
const BASE_FULL = 0x80000000;
const MAX_DIGIT = 0x7FFFFFFF;
const MSB = 0x40000000;
/**
* MAX10 in greatest MAX10LEN satisfying
* MAX10 = 10**MAX10LEN <= 2**BASE.
*/
const MAX10 = 1000000000;
/**
* MAX10LEN in greatest MAX10LEN satisfying
* MAX10 = 10**MAX10LEN <= 2**BASE.
*/
const MAX10LEN = 9;
const MAX_DIGIT2 = 4611686018427387904;
/**
* Initialize a PHP64 BigInteger Engine instance
*
* @param int $base
* @see parent::initialize()
*/
protected function initialize($base)
{
if ($base != 256 && $base != -256) {
return parent::initialize($base);
}
$val = $this->value;
$this->value = [];
$vals = &$this->value;
$i = strlen($val);
if (!$i) {
return;
}
while (true) {
$i -= 4;
if ($i < 0) {
if ($i == -4) {
break;
}
$val = substr($val, 0, 4 + $i);
$val = str_pad($val, 4, "\0", STR_PAD_LEFT);
if ($val == "\0\0\0\0") {
break;
}
$i = 0;
}
list(, $digit) = unpack('N', substr($val, $i, 4));
$step = count($vals) & 7;
if (!$step) {
$digit &= static::MAX_DIGIT;
$i++;
} else {
$shift = 8 - $step;
$digit >>= $shift;
$shift = 32 - $shift;
$digit &= (1 << $shift) - 1;
$temp = $i > 0 ? ord($val[$i - 1]) : 0;
$digit |= ($temp << $shift) & 0x7F000000;
}
$vals[] = $digit;
}
while (end($vals) === 0) {
array_pop($vals);
}
reset($vals);
}
/**
* Test for engine validity
*
* @see parent::__construct()
* @return bool
*/
public static function isValidEngine()
{
return PHP_INT_SIZE >= 8 && !self::testJITOnWindows();
}
/**
* Adds two BigIntegers.
*
* @param PHP64 $y
* @return PHP64
*/
public function add(PHP64 $y)
{
$temp = self::addHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
return $this->convertToObj($temp);
}
/**
* Subtracts two BigIntegers.
*
* @param PHP64 $y
* @return PHP64
*/
public function subtract(PHP64 $y)
{
$temp = self::subtractHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
return $this->convertToObj($temp);
}
/**
* Multiplies two BigIntegers.
*
* @param PHP64 $y
* @return PHP64
*/
public function multiply(PHP64 $y)
{
$temp = self::multiplyHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
return $this->convertToObj($temp);
}
/**
* Divides two BigIntegers.
*
* Returns an array whose first element contains the quotient and whose second element contains the
* "common residue". If the remainder would be positive, the "common residue" and the remainder are the
* same. If the remainder would be negative, the "common residue" is equal to the sum of the remainder
* and the divisor (basically, the "common residue" is the first positive modulo).
*
* @param PHP64 $y
* @return array{PHP64, PHP64}
*/
public function divide(PHP64 $y)
{
return $this->divideHelper($y);
}
/**
* Calculates modular inverses.
*
* Say you have (30 mod 17 * x mod 17) mod 17 == 1. x can be found using modular inverses.
* @param PHP64 $n
* @return false|PHP64
*/
public function modInverse(PHP64 $n)
{
return $this->modInverseHelper($n);
}
/**
* Calculates modular inverses.
*
* Say you have (30 mod 17 * x mod 17) mod 17 == 1. x can be found using modular inverses.
* @param PHP64 $n
* @return PHP64[]
*/
public function extendedGCD(PHP64 $n)
{
return $this->extendedGCDHelper($n);
}
/**
* Calculates the greatest common divisor
*
* Say you have 693 and 609. The GCD is 21.
*
* @param PHP64 $n
* @return PHP64
*/
public function gcd(PHP64 $n)
{
return $this->extendedGCD($n)['gcd'];
}
/**
* Logical And
*
* @param PHP64 $x
* @return PHP64
*/
public function bitwise_and(PHP64 $x)
{
return $this->bitwiseAndHelper($x);
}
/**
* Logical Or
*
* @param PHP64 $x
* @return PHP64
*/
public function bitwise_or(PHP64 $x)
{
return $this->bitwiseOrHelper($x);
}
/**
* Logical Exclusive Or
*
* @param PHP64 $x
* @return PHP64
*/
public function bitwise_xor(PHP64 $x)
{
return $this->bitwiseXorHelper($x);
}
/**
* Compares two numbers.
*
* Although one might think !$x->compare($y) means $x != $y, it, in fact, means the opposite. The reason for this is
* demonstrated thusly:
*
* $x > $y: $x->compare($y) > 0
* $x < $y: $x->compare($y) < 0
* $x == $y: $x->compare($y) == 0
*
* Note how the same comparison operator is used. If you want to test for equality, use $x->equals($y).
*
* {@internal Could return $this->subtract($x), but that's not as fast as what we do do.}
*
* @param PHP64 $y
* @return int in case < 0 if $this is less than $y; > 0 if $this is greater than $y, and 0 if they are equal.
* @see self::equals()
*/
public function compare(PHP64 $y)
{
return parent::compareHelper($this->value, $this->is_negative, $y->value, $y->is_negative);
}
/**
* Tests the equality of two numbers.
*
* If you need to see if one number is greater than or less than another number, use BigInteger::compare()
*
* @param PHP64 $x
* @return bool
*/
public function equals(PHP64 $x)
{
return $this->value === $x->value && $this->is_negative == $x->is_negative;
}
/**
* Performs modular exponentiation.
*
* @param PHP64 $e
* @param PHP64 $n
* @return PHP64
*/
public function modPow(PHP64 $e, PHP64 $n)
{
return $this->powModOuter($e, $n);
}
/**
* Performs modular exponentiation.
*
* Alias for modPow().
*
* @param PHP64 $e
* @param PHP64 $n
* @return PHP64|false
*/
public function powMod(PHP64 $e, PHP64 $n)
{
return $this->powModOuter($e, $n);
}
/**
* Generate a random prime number between a range
*
* If there's not a prime within the given range, false will be returned.
*
* @param PHP64 $min
* @param PHP64 $max
* @return false|PHP64
*/
public static function randomRangePrime(PHP64 $min, PHP64 $max)
{
return self::randomRangePrimeOuter($min, $max);
}
/**
* Generate a random number between a range
*
* Returns a random number between $min and $max where $min and $max
* can be defined using one of the two methods:
*
* BigInteger::randomRange($min, $max)
* BigInteger::randomRange($max, $min)
*
* @param PHP64 $min
* @param PHP64 $max
* @return PHP64
*/
public static function randomRange(PHP64 $min, PHP64 $max)
{
return self::randomRangeHelper($min, $max);
}
/**
* Performs exponentiation.
*
* @param PHP64 $n
* @return PHP64
*/
public function pow(PHP64 $n)
{
return $this->powHelper($n);
}
/**
* Return the minimum BigInteger between an arbitrary number of BigIntegers.
*
* @param PHP64 ...$nums
* @return PHP64
*/
public static function min(PHP64 ...$nums)
{
return self::minHelper($nums);
}
/**
* Return the maximum BigInteger between an arbitrary number of BigIntegers.
*
* @param PHP64 ...$nums
* @return PHP64
*/
public static function max(PHP64 ...$nums)
{
return self::maxHelper($nums);
}
/**
* Tests BigInteger to see if it is between two integers, inclusive
*
* @param PHP64 $min
* @param PHP64 $max
* @return bool
*/
public function between(PHP64 $min, PHP64 $max)
{
return $this->compare($min) >= 0 && $this->compare($max) <= 0;
}
}
Developer
If you encounter any issues or need assistance, please reach out to our dedicated developer support team Contact Us
Thank you for choosing Kueue Pay Payment Gateway Solutions! We look forward to seeing your integration thrive and provide a seamless payment experience for your valued customers.