Returns the integer bitwise-and combined with another integer.
This method returns a negative BigInteger if and only if both operands are negative.
BigNumber|int|float|string $that The operand. Must be convertible to an integer number.:
public function and(BigNumber|int|float|string $that) : BigInteger { $that = BigInteger::of($that); return new BigInteger(Calculator::get()->and($this->value, $that->value)); }