import poly.*;
import poly.factory.*;
import poly.op.*;

/**
* A few simple test cases.  This is not a comprehensive test.
* @author DXN
* @since Fall 2002.
*/
public class PolyClient {

    public IPoly pc0;
    public IPoly pc1;
    public IPoly p1;
    public IPoly p2;
    public IPoly p3;
    public IPoly p4;
    public IPoly p5;
    public IPolyOp add;
    public IPolyOp mul;
    public IPolyOp longDiv;

    public PolyClient(IPolyFact f) {
        pc0 = f.makeConstPoly (0.0); // pc0 == 0.
        pc1 = f.makeConstPoly  (-1.0); // pc1 == -1.
        p1 = f.makeNCPoly  (-5.0, 3, pc0); // p1 == -5x^3.
        p2 = f.makeNCPoly  (2.0, 5, p1);   // p2 == 2x^5 - 5x^3.
        p3 = f.makeNCPoly  (-4.0, 6, p2);  // p3 = -4x^6 + 2x^5 - 5x^3.
        p4 = f.makeNCPoly (3.0, 2, pc1);  // p4 = 3x^2 - 1.
        p5 = f.makeNCPoly  (-2.0, 5, p4);  // p5 = -2x^5 + 3x^2 -1.

        System.out.println ("pc0(x) = 0  = " + pc0);
        System.out.println ("pc1(x) = -1 = " + pc1);
        System.out.println ("p1(x) = -5x^3 + 0 = " + p1);
        System.out.println ("p2(x) = 2x^5 - 5x^3 + 0 = " + p2);
        System.out.println ("p3(x) = -4x^6 + 2x^5 - 5x^3 + 0  = " + p3);
        System.out.println ("p4(x) = 3x^2 - 1  = " + p4);
        System.out.println ("p5(x) = -2x^5 + 3x^2 -1  = " + p5);

        add = new Add(f);
        mul = new Mul(f);
        longDiv = new LongDiv(f);
    }

    public void testAdd() {
        System.out.println ("p5(x) + p3(x) = -4x^6 - 5x^3 + 3x^2 - 1  = " +
                            p5.execute(add, p3));
    }

    public void testMul() {
        System.out.println ("p5(x) * p4(x) = -6x^7 - 2x^5 + 9x^4 - 6x^2 + 1 = " +
                            p5.execute(mul, p4));
    }

    public void testLongDiv() {
        QRPair qr = (QRPair)p4.execute(longDiv, p5);
        System.out.println ("p5(x) / p4(x): quotient = " + qr.getQuotient() +
                            " remainder = " + qr.getRemainder());
    }

    public void testEval() {
        System.out.println ("p5(0) == -1,  Eval = " +
                            p5.execute(EvalHorner.Singleton, new Double(0)));
        System.out.println ("p5(1) == 0, Eval = " +
                            p5.execute (EvalHorner.Singleton, new Double(1)));
    }

    public void run () {
        testAdd();
        testMul();
        testLongDiv();
        testEval();
    }

    public static void main (String[] args) {
        new PolyClient(CompPolyFact.Singleton).run();
    }
}