public long getNaNEncoding(boolean sgn) {
		// Use IEEE 754 standard for NaN encoding
		long res = 1L << (frac_pos + frac_size - 1);
		res |= (long) maxexponent << exp_pos;
		return setSign(res, sgn);
	}
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