public final static String toSignedHexString(long value) {
		StringBuilder buf = new StringBuilder();
		if (value < 0) {
			buf.append("-");
		}
		buf.append(HEX_PREFIX_x);
		buf.append(Long.toHexString(Math.abs(value)));
		return buf.toString();
	}
returns the value of the specified long as signed hexadecimal, prefixing with the
{@link #HEX_PREFIX_x}  string.

@param value the long value to convert
@return the string
Ghidra/Framework/Generic/src/main/java/ghidra/util/NumericUtilities.java