Changes

#*01-127 are negative exponents.#*0 means, the number is zero

To obtain the signed exponent, you must subtract 128 from the stored exponent. The minimum exponent is 0 1 and this describes a number of 2^-127. The maximum exponent is 255 and this describes a number of 2^128127.A value of 0 just means, that the number is zero (0).