Method check

src/main/java/core/org/xbill/DNS/DNSOutput.java:45–53

(long val, int bits)

}

private void
check(long val, int bits) {
	long max = 1;
	max <<= bits;
	if (val < 0 || val > max) {
		throw new IllegalArgumentException(val + " out of range for " +
						   bits + " bit value");
	}
}

private void
need(int n) {