big_int {}
	Special member functions
		big_int()
	Operators
		operator /*???*/()
		operator<=>()
		operator+()
		operator+=()
		operator++()
		operator-()
		operator-=()
		operator--()
		operator*()
		operator*=()
		operator/()
		operator/=()
		operator%()
		operator%=()
		operator~()
		operator&()
		operator&=()
		operator|()
		operator|=()
		operator^()
		operator^=()
		operator<<()
		operator<<=()
		operator>>()
		operator>>=()
	Non-static member functions
		abs()
		pow()
		root()
		log()
		str()