// JVM Tutorial. 
// Test of Static Assembler Functions
//  
import java.util.Date;

public class TestFunctions {

  public static void main(String[] args) {
      System.out.println("TestFunctions");
      System.out.println("distSq(3,4) = " + SomeFunctions.distSq(3,4));

     System.out.println("millionX(-3) = " + SomeFunctions.millionX(-3));
     System.out.println("distSq(3,4,10) = " + SomeFunctions.distSq(3,4,10));
     SomeFunctions.show(123456789);
     System.out.println("dist(3,40) = " + SomeFunctions.dist(3,40));
     System.out.println("dist(120,10) = " + SomeFunctions.dist(120,10));
     System.out.println("abs(-100) = " + SomeFunctions.abs(-100));
     System.out.println("abs(100) = " + SomeFunctions.abs(100));
     System.out.println("sgn(20) = " + SomeFunctions.sgn(20));
     System.out.println("sgn(-20) = " + SomeFunctions.sgn(-20));
     System.out.println("sgn(0) = " + SomeFunctions.sgn(0));

     int[] a = { 7, 8, 23, 2000};
     System.out.println(" sum of a[] is " + MoreFunctions.add(a));

     final int HOWMANY = 2000000;
     final int VALUE   = 3;
     
     int[] b;
     b = MoreFunctions.newArray(HOWMANY,VALUE);
     long t1, t2, t3;
     int ans1, ans2;
     new Date();   // bring class in
     t1 = (new Date()).getTime();
     ans1 = TestFunctions.add(b);
     t2 = (new Date()).getTime();
     ans2 = MoreFunctions.add(b);
     t3 = (new Date()).getTime();
     if (ans1 != HOWMANY*VALUE || ans1 != ans2)
        System.out.println("I blew it");
     System.out.println("Adding an array of " + HOWMANY + " elements = "
          + VALUE + ". Sum is " + ans2);
     System.out.println("Java's way -- " + (t2 - t1) + " milliseconds");
     System.out.println("My way -- " + (t3 - t2) + " milliseconds");

     
  }



// Following are for comparing with assembled .j versions

    public static int sgn(int x) {
       int ans; 
       if (x > 0)
         ans = 1;
       else if (x == 0)
         ans = 0;
       else
         ans = -1;
       return ans;
     }  
    
   public static int add(int[] a) {
     int sum = 0;
     for (int i = 0; i < a.length; i++)
         sum += a[i];
     return sum;  
   }


 public static int[] newArray(int size, int value) {
     int[] x = new int[size];
      for (int i = 0; i < size; i++)
       x[i] = value;  
     return x;
  }
   
   public static  int abs(int x) {
      if (x < 0) x = -x;
      return x;
   }
}