Revise the floating point addition unit shown bellow to reflect the following requirements/restrictions: (1) add two numbers of same sign only (i.e. both positive or both negative), (2) replace the rounding unit with a truncation unit, i.e. modify the figure by simplifying the normalization stage and control unit so there is no iteration back), (3) explicitly show how hidden one is handled. No need to trace data.

SignExponent Fraction Sign Exponent Fraction Compare exponents Small ALU Exponent difference Shift smaller Control Shift right number right Add Big ALU Increment or decrement Shift left or right Rounding hardware Round Sign Exponent Fraction