Method and apparatus for classifying and evaluating logic circuit

Abstract

The logic elements and net list contained in a logic circuit are inputted to an electronic calculator. The total number N1 of primary adjacent logic circuits which are connected directly to all the logic elements contained in the foregoing logic circuit, respectively is calculated from the inputted logic elements and net list. The total number N2 of primary and secondary adjacent logic circuits, which is the sum of the foregoing total number N1 of primary adjacent logic circuits and the total number of secondary adjacent logic circuits which are connected directly to the primary adjacent logic circuits, respectively, is calculated from the inputted logic elements and net list. The difference between the logarithmic value of the foregoing total number N1 of primary adjacent logic circuits and the logarithmic value of the foregoing total number N2 of primary and secondary adjacent logic circuits is calculated as a value for classification which characterizes the aforesaid logic circuit.