1. A floating point unit, comprising: an adder operable to add two floating point operands to produce a sum, the sum comprising an exponent; a normalization unit operable to normalize at least a portion of the sum; a rounding unit operable to round the sum and to adjust the exponent; and a renormalization unit operable to renormalize a portion of the sum; wherein the adjustment to the exponent by the rounding unit compensates for the renormalization of the portion of the sum.