Detection of exponent underflow and overflow in a floating point adder

摘要

An exponent subtractor system (226) for a floating point adder (200) generates an exponent result (EXP-low) and a rounded exponent result (EXP-high) for an addition operation performed on two floating point numbers and generates overflow (Overflow-low, Overflow-high) and underflow flags (Underflow-low, Underflow-high) for the exponent result and the rounded exponent result before the completion of the updating of the exponent result in an exponent subtractor (52, 72).