private BigInteger getMin(SearchSettings settings) {
		boolean unsigned = settings.isDecimalUnsigned();
		int size = settings.getDecimalByteSize();
		if (unsigned) {
			return BigInteger.ZERO;
		}
		return BigInteger.ONE.shiftLeft(8 * size - 1).negate();
	}
{@link SearchFormat} for parsing and display bytes in a decimal format. It supports sizes of
2,4,8,16 and can be either signed or unsigned.
Ghidra/Features/Base/src/main/java/ghidra/features/base/memsearch/format/DecimalSearchFormat.java