High-radix implementation of IEEE floating-point addition

We are proposing a micro-architecture for high-performance IEEE floating-point addition that is based on a (non-redundant) high-radix representation of the floating-point operands. The main improvement of the proposed IEEE FP addition implementation is achieved by avoiding the computation of full alignment and normalization shifts which impose major delays in conventional implementations of IEEE FP addition. This reduction is achieved at the cost of wider operand interfaces and an increased complexity for IEEE compliant rounding. We present a detailed discussion of an IEEE FP adder implementation using the proposed high-radix format and explain the specific benefits and challenges of the design.