1. A method, comprising: computing a first number of trailing zeros in a first significand associated with a floating-point format input operand; computing a second number of trailing zeros in a second significand; summing the first number of trailing zeros with the second number of trailing zeros to produce a trailing zero sum; receiving a disable control signal that is based on a characteristic of the floating-point format input operand and the trailing zero sum; disabling a portion of a logic circuit based on the disable control signal; and processing the first significand and the second significand by the logic circuit to generate an output.