ex5_exponent_iter.dot

// Data-flow diagram for Exponent register machine

digraph IterativeExponent {
        // constants
        1 [shape=triangle];
        0 [shape=triangle];

        // registers
        n [shape=box];
        b [shape=box];
        product [shape=box];
        counter [shape=box];
        
        // operations
        "*" [shape=polygon,sides=4,distortion=0.6];
        "-" [shape=polygon,sides=4,distortion=0.6];

        // tests
        "=";

        // edges
        1 -> product;
        n -> "=";
        0 -> "=";
        "-" -> counter [weight=8];
        counter -> "-";
        1 -> "-";
        "*" -> product [weight=8];
        product -> "*";
        b -> "*";
}