/**
 *  CS1322: Programming Assignment #0 - Fall 2002 
 *
 *  <PRE>
 *  P0Phase3.java
 *  Class P0Phase3 - A class designed to learn methods and
 *    casting, as well as working with expressions.
 *
 *  Revisions: 1.0 Aug. 26, 2002
 *               Created the P0Phase3 class
 *
 *             1.1 Aug. 26, 2002
 *               Finished, Compiled, Tested
 *
 *  </PRE>
 *
 *  Collaboration Statement:
 *    I worked on the homework assignment alone, using only              
 *    course materials.
 *
 *  @author <A HREF="mailto:gtg184g@mail.gatech.edu">Jose Manuel Caban</A>
 *  @version Version 1.1, Aug. 26, 2002
 */

public class P0Phase3 {

  ///////////
  //Methods//
  ///////////

  /**
   * Truncate double value into an int
   *
   * <br><br>
   * @param d, value to be truncated
   * @return truncated value d
   */
  public int roundOff(double d){
    return ((int) d);
  }

  /**
   * Divide dividend by divisor
   *
   * <br><br>
   * @param dividend, value to be divided
   * @param divisor, parts that the divisor will be split into
   * @return quotient of dividend and divisor
   */
  public double divide(int dividend, int divisor){
    return (((double)dividend / divisor));
  }

  /**
   * Mulitply x by 2.5
   *
   * <br><br>
   * @param x value to be multiplied by 2.5
   * @return value of x*2.5
   */
  public double twoANDAHalfTimes(int x){
    return ((double)(x*2.5));
  }

  /**
   * Square the value x
   *
   * <BR><BR>
   * @param x value to be squared
   * @return value of the square
   */
  public double square(double x){
    return (x*x);
  }

  /**
   * Find the value of the quadratic
   * <br><br>
   * @param x,a,b,c values to be used in quadratic
   * @return value of the equation with given values
   */
  public double quadratic(double x, int a, int b, int c){
    //no typecasting needed, the equation is promoted 
    //to double because x is a double
    return (a*(x*x) + b*x + c);
  }

  /**
   * Solve the Quadratic Equation with given values
   * <br><br>
   * @param a,b,c values to be used in quadratic equation
   * @return value of the quadratic
   */
  public double solveQuadr(double a, double b, double c){
    return (-b + Math.sqrt((b*b) - (4*a*c)))/(2*a);
  }
  //////////////////////////////////////////////////////////

  /**
   *  Debugging main for class P0Phase3.  
   *  This method will rigorously test my code.
   *
   *  <br><br>
   *  @param args IGNORED
   */
  public static void main(String[] args) {
    //Create variable to test out class
    P0Phase3 tester = new P0Phase3();
   
    //test methods
    System.out.println(tester.roundOff(5.454));
    System.out.println(tester.divide(10,3));
    System.out.println(tester.twoANDAHalfTimes(5));
    System.out.println(tester.square(2));
    System.out.println(tester.quadratic(2,2,3,4));
    System.out.println(tester.solveQuadr(1,2,1));
   
  }// end of main(String[] args)

}// end of class P0Phase3