private BigInteger setSign(BigInteger x, boolean sign) {
		if (sign) {
			return x.setBit(signbit_pos);
		}
		return x;
	}
Get the minimum finite subnormal {@link BigFloat} value for this format

@return minimum finite subnormal {@link BigFloat} value
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/pcode/floatformat/FloatFormat.java