FLOATING POINT CONVERSION CIRCUIT

摘要

A floating point conversion circuit (10) converts a fixed point data signal having a fixed point data format (200) to a floating point data signal having a floating point data format (300). The floating point conversion circuit (10) contains a twos complement circuit (110) and a programmable logic array (120) which determines the magnitude of the fixed point data signal and produces an exponent signal and a shift signal based on the magnitude determined. The floating point conversion circuit (10) also contains a barrel shifter (130) which shifts the fixed point data signal to adjust the magnitude based on the shift signal and thus produces a signal. The floating point conversion circuit (10) outputs a floating point data signal having a floating point exponent portion (320) represented by the exponent signal and a floating point portion (330) represented by the signal.