Is any software used to make a graph of the highest exponential power value, such as 3.632 x 10^-480, I have checked in excel and origin 7 both are unable to find out a graph of such highest values.
If you are using standard double precision, then the smallest representable number is about 10^-307 / 2^52 ~ 2.5 x 10^-323. So numbers of size 10^-480 are not representable. Is that the problem?