/**
  * Copyright (c): Uwe Schmidt, FH Wedel
  *
  * You may study, modify and distribute this source code
  * FOR NON-COMMERCIAL PURPOSES ONLY.
  * This copyright message has to remain unchanged.
  *
  * Note that this document is provided 'as is',
  * WITHOUT WARRANTY of any kind either expressed or implied.
  */

/**
  * simple test of SearchZero and RealFunction
  */

//--------------------

public
class FindZeroTest {

  public
  static
  void main(String[] args) {
    RealFunction sin = new Sinus();
    RealFunction exp = new Exponent();
    RealFunction sinexp = new MultFunctions(sin,exp);  // sin(x) * exp(x)

    RealFunction trcSin    = new TraceFunction(sin);
    RealFunction trcSinExp = new TraceFunction(sinexp);

    SearchZero z1 = new IntervallNesting();
    SearchZero z2 = new Interpolation();

    printZero(1.0,4.0,trcSin,z1);
    System.out.println("");

    printZero(1.0,4.0,trcSin,z2);
    System.out.println("");

    printZero(1.0,4.0,trcSinExp,z1);
    System.out.println("");

    printZero(1.0,4.0,trcSinExp,z2);
    System.out.println("");
  }

  //--------------------

  public
  static
  void printZero(double x1,
		 double x2,
		 RealFunction f,
		 SearchZero z) {
    System.out.println(
      "search a zero of " + f + " in: " + x1 + " <= x <= " + x2
      + "\nwith method: " + z + "\n");

    try {
      double x = z.searchZero(x1,x2,f);
      int nc = z.getNoOfCalls();

      System.out.println(
        "result x: " + x);

      System.out.println(
        nc + " calls needed");
    }
    catch (NoZeroFoundException e) {
      System.out.println(e.getMessage());
    }
  }

}