/**
* @param $a
* @param $b
* @param $cond
*/
public function cswapValue(&$a, &$b, $cond)
{
$size = max(strlen($this->adapter->baseConvert($a, 10, 2)), strlen($this->adapter->baseConvert($b, 10, 2)));
$mask = 1 - intval($cond);
$mask = str_pad('', $size, $mask, STR_PAD_LEFT);
$mask = $this->adapter->baseConvert($mask, 2, 10);
$tA = $this->adapter->bitwiseAnd($a, $mask);
$tB = $this->adapter->bitwiseAnd($b, $mask);
$a = $this->adapter->bitwiseXor($this->adapter->bitwiseXor($a, $b), $tB);
$b = $this->adapter->bitwiseXor($this->adapter->bitwiseXor($a, $b), $tA);
$a = $this->adapter->bitwiseXor($this->adapter->bitwiseXor($a, $b), $tB);
}
/**
* @param $integer
* @param $bitSize
* @return int|string
*/
public function makeNegative($integer, $bitSize)
{
return $this->math->bitwiseXor($this->math->leftShift(1, $this->fixSize($bitSize)), $integer);
}
